feat: チャンネルミュートの実装 (#14105)

* add channel_muting table and entities

* add channel_muting services

* タイムライン取得処理への組み込み

* misskey-jsの型とインターフェース生成

* Channelスキーマにミュート情報を追加

* フロントエンドの実装

* 条件が逆だったのを修正

* 期限切れミュートを掃除する機能を実装

* TLの抽出条件調節

* 名前の変更と変更不要の差分をロールバック

* 修正漏れ

* isChannelRelatedの条件に誤りがあった

* [wip] テスト追加

* テストの追加と検出した不備の修正

* fix test

* fix CHANGELOG.md

* 通常はFTTにしておく

* 実装忘れ対応

* fix merge

* fix merge

* add channel tl test

* fix CHANGELOG.md

* remove unused import

* fix lint

* fix test

* fix favorite -> favorited

* exclude -> include

* fix CHANGELOG.md

* fix CHANGELOG.md

* maintenance

* fix CHANGELOG.md

* fix

* fix ci

* regenerate

* fix

* Revert "fix"

This reverts commit 699d50c6ec798777d8e9667cb5d45a26b06bfc93.

* fixed

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

53 files changed, 3561 insertions, 148 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 057ffd5566..d32ff1ec42 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 ## 2025.11.0
 
 ### General
+- Feat: チャンネルミュート機能の実装 #10649
+	- チャンネルの概要画面の右上からミュートできます（リンクコピー、共有、設定と同列）
 - Enhance: Node.js 24.10.0をサポートするようになりました
 - Enhance: DockerのNode.jsが24.10.0に更新されました
 
diff --git a/packages/backend/jest.config.unit.cjs b/packages/backend/jest.config.unit.cjs
index aa5992936b..957d0635c1 100644
--- a/packages/backend/jest.config.unit.cjs
+++ b/packages/backend/jest.config.unit.cjs
@@ -7,6 +7,7 @@ const base = require('./jest.config.cjs')
 
 module.exports = {
 	...base,
+	globalSetup: "<rootDir>/test/jest.setup.unit.cjs",
 	testMatch: [
 		"<rootDir>/test/unit/**/*.ts",
 		"<rootDir>/src/**/*.test.ts",
diff --git a/packages/backend/migration/1761569941833-add-channel-muting.js b/packages/backend/migration/1761569941833-add-channel-muting.js
new file mode 100644
index 0000000000..e985df90ba
--- /dev/null
+++ b/packages/backend/migration/1761569941833-add-channel-muting.js
@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class AddChannelMuting1761569941833 {
+    name = 'AddChannelMuting1761569941833'
+
+    /**
+     * @param {QueryRunner} queryRunner
+     */
+    async up(queryRunner) {
+        await queryRunner.query(`CREATE TABLE "channel_muting" ("id" character varying(32) NOT NULL, "userId" character varying(32) NOT NULL, "channelId" character varying(32) NOT NULL, "expiresAt" TIMESTAMP WITH TIME ZONE, CONSTRAINT "PK_aec842e98f332ebd8e12f85bad6" PRIMARY KEY ("id"))`);
+        await queryRunner.query(`CREATE INDEX "IDX_34415e3062ae7a94617496e81c" ON "channel_muting" ("userId") `);
+        await queryRunner.query(`CREATE INDEX "IDX_4d534d7177fc59879d942e96d0" ON "channel_muting" ("channelId") `);
+        await queryRunner.query(`CREATE INDEX "IDX_6dd314e96806b7df65ddadff72" ON "channel_muting" ("expiresAt") `);
+        await queryRunner.query(`CREATE INDEX "IDX_b96870ed326ccc7fa243970965" ON "channel_muting" ("userId", "channelId") `);
+        await queryRunner.query(`ALTER TABLE "note" ADD "renoteChannelId" character varying(32)`);
+        await queryRunner.query(`COMMENT ON COLUMN "note"."renoteChannelId" IS '[Denormalized]'`);
+        await queryRunner.query(`ALTER TABLE "channel_muting" ADD CONSTRAINT "FK_34415e3062ae7a94617496e81c5" FOREIGN KEY ("userId") REFERENCES "user"("id") ON DELETE CASCADE ON UPDATE NO ACTION`);
+        await queryRunner.query(`ALTER TABLE "channel_muting" ADD CONSTRAINT "FK_4d534d7177fc59879d942e96d03" FOREIGN KEY ("channelId") REFERENCES "channel"("id") ON DELETE CASCADE ON UPDATE NO ACTION`);
+    }
+
+    /**
+     * @param {QueryRunner} queryRunner
+     */
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "channel_muting" DROP CONSTRAINT "FK_4d534d7177fc59879d942e96d03"`);
+        await queryRunner.query(`ALTER TABLE "channel_muting" DROP CONSTRAINT "FK_34415e3062ae7a94617496e81c5"`);
+        await queryRunner.query(`COMMENT ON COLUMN "note"."renoteChannelId" IS '[Denormalized]'`);
+        await queryRunner.query(`ALTER TABLE "note" DROP COLUMN "renoteChannelId"`);
+        await queryRunner.query(`DROP INDEX "public"."IDX_b96870ed326ccc7fa243970965"`);
+        await queryRunner.query(`DROP INDEX "public"."IDX_6dd314e96806b7df65ddadff72"`);
+        await queryRunner.query(`DROP INDEX "public"."IDX_4d534d7177fc59879d942e96d0"`);
+        await queryRunner.query(`DROP INDEX "public"."IDX_34415e3062ae7a94617496e81c"`);
+        await queryRunner.query(`DROP TABLE "channel_muting"`);
+    }
+}
diff --git a/packages/backend/src/core/ChannelFollowingService.ts b/packages/backend/src/core/ChannelFollowingService.ts
index 12251595e2..d320a5ea36 100644
--- a/packages/backend/src/core/ChannelFollowingService.ts
+++ b/packages/backend/src/core/ChannelFollowingService.ts
@@ -6,7 +6,7 @@
 import { Inject, Injectable, OnModuleInit } from '@nestjs/common';
 import Redis from 'ioredis';
 import { DI } from '@/di-symbols.js';
-import type { ChannelFollowingsRepository } from '@/models/_.js';
+import type { ChannelFollowingsRepository, ChannelsRepository, MiUser } from '@/models/_.js';
 import { MiChannel } from '@/models/_.js';
 import { IdService } from '@/core/IdService.js';
 import { GlobalEvents, GlobalEventService } from '@/core/GlobalEventService.js';
@@ -23,6 +23,8 @@ export class ChannelFollowingService implements OnModuleInit {
 		private redisClient: Redis.Redis,
 		@Inject(DI.redisForSub)
 		private redisForSub: Redis.Redis,
+		@Inject(DI.channelsRepository)
+		private channelsRepository: ChannelsRepository,
 		@Inject(DI.channelFollowingsRepository)
 		private channelFollowingsRepository: ChannelFollowingsRepository,
 		private idService: IdService,
@@ -45,6 +47,50 @@ export class ChannelFollowingService implements OnModuleInit {
 	onModuleInit() {
 	}
 
+	/**
+	 * フォローしているチャンネルの一覧を取得する.
+	 * @param params
+	 * @param [opts]
+	 * @param	{(boolean|undefined)} [opts.idOnly=false] チャンネルIDのみを取得するかどうか. ID以外のフィールドに値がセットされなくなり、他テーブルとのJOINも一切されなくなるので注意.
+	 * @param {(boolean|undefined)} [opts.joinUser=undefined] チャンネルオーナーのユーザ情報をJOINするかどうか(falseまたは省略時はJOINしない).
+	 * @param {(boolean|undefined)} [opts.joinBannerFile=undefined] バナー画像のドライブファイルをJOINするかどうか(falseまたは省略時はJOINしない).
+	 */
+	@bindThis
+	public async list(
+		params: {
+			requestUserId: MiUser['id'],
+		},
+		opts?: {
+			idOnly?: boolean;
+			joinUser?: boolean;
+			joinBannerFile?: boolean;
+		},
+	): Promise<MiChannel[]> {
+		if (opts?.idOnly) {
+			const q = this.channelFollowingsRepository.createQueryBuilder('channel_following')
+				.select('channel_following.followeeId')
+				.where('channel_following.followerId = :userId', { userId: params.requestUserId });
+
+			return q
+				.getRawMany<{ channel_following_followeeId: string }>()
+				.then(xs => xs.map(x => ({ id: x.channel_following_followeeId } as MiChannel)));
+		} else {
+			const q = this.channelsRepository.createQueryBuilder('channel')
+				.innerJoin('channel_following', 'channel_following', 'channel_following.followeeId = channel.id')
+				.where('channel_following.followerId = :userId', { userId: params.requestUserId });
+
+			if (opts?.joinUser) {
+				q.innerJoinAndSelect('channel.user', 'user');
+			}
+
+			if (opts?.joinBannerFile) {
+				q.leftJoinAndSelect('channel.banner', 'drive_file');
+			}
+
+			return q.getMany();
+		}
+	}
+
 	@bindThis
 	public async follow(
 		requestUser: MiLocalUser,
diff --git a/packages/backend/src/core/ChannelMutingService.ts b/packages/backend/src/core/ChannelMutingService.ts
new file mode 100644
index 0000000000..bf5b848d44
--- /dev/null
+++ b/packages/backend/src/core/ChannelMutingService.ts
@@ -0,0 +1,224 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import Redis from 'ioredis';
+import { Brackets, In } from 'typeorm';
+import { DI } from '@/di-symbols.js';
+import type { ChannelMutingRepository, ChannelsRepository, MiChannel, MiChannelMuting, MiUser } from '@/models/_.js';
+import { IdService } from '@/core/IdService.js';
+import { GlobalEvents, GlobalEventService } from '@/core/GlobalEventService.js';
+import { bindThis } from '@/decorators.js';
+import { RedisKVCache } from '@/misc/cache.js';
+
+@Injectable()
+export class ChannelMutingService {
+	public mutingChannelsCache: RedisKVCache<Set<string>>;
+
+	constructor(
+		@Inject(DI.redis)
+		private redisClient: Redis.Redis,
+		@Inject(DI.redisForSub)
+		private redisForSub: Redis.Redis,
+		@Inject(DI.channelsRepository)
+		private channelsRepository: ChannelsRepository,
+		@Inject(DI.channelMutingRepository)
+		private channelMutingRepository: ChannelMutingRepository,
+		private idService: IdService,
+		private globalEventService: GlobalEventService,
+	) {
+		this.mutingChannelsCache = new RedisKVCache<Set<string>>(this.redisClient, 'channelMutingChannels', {
+			lifetime: 1000 * 60 * 30, // 30m
+			memoryCacheLifetime: 1000 * 60, // 1m
+			fetcher: (userId) => this.channelMutingRepository.find({
+				where: { userId: userId },
+				select: ['channelId'],
+			}).then(xs => new Set(xs.map(x => x.channelId))),
+			toRedisConverter: (value) => JSON.stringify(Array.from(value)),
+			fromRedisConverter: (value) => new Set(JSON.parse(value)),
+		});
+
+		this.redisForSub.on('message', this.onMessage);
+	}
+
+	/**
+	 * ミュートしているチャンネルの一覧を取得する.
+	 * @param params
+	 * @param [opts]
+	 * @param	{(boolean|undefined)} [opts.idOnly=false] チャンネルIDのみを取得するかどうか. ID以外のフィールドに値がセットされなくなり、他テーブルとのJOINも一切されなくなるので注意.
+	 * @param {(boolean|undefined)} [opts.joinUser=undefined] チャンネルオーナーのユーザ情報をJOINするかどうか(falseまたは省略時はJOINしない).
+	 * @param {(boolean|undefined)} [opts.joinBannerFile=undefined] バナー画像のドライブファイルをJOINするかどうか(falseまたは省略時はJOINしない).
+	 */
+	@bindThis
+	public async list(
+		params: {
+			requestUserId: MiUser['id'],
+		},
+		opts?: {
+			idOnly?: boolean;
+			joinUser?: boolean;
+			joinBannerFile?: boolean;
+		},
+	): Promise<MiChannel[]> {
+		if (opts?.idOnly) {
+			const q = this.channelMutingRepository.createQueryBuilder('channel_muting')
+				.select('channel_muting.channelId')
+				.where('channel_muting.userId = :userId', { userId: params.requestUserId })
+				.andWhere(new Brackets(qb => {
+					qb.where('channel_muting.expiresAt IS NULL')
+						.orWhere('channel_muting.expiresAt > :now', { now: new Date() });
+				}));
+
+			return q
+				.getRawMany<{ channel_muting_channelId: string }>()
+				.then(xs => xs.map(x => ({ id: x.channel_muting_channelId } as MiChannel)));
+		} else {
+			const q = this.channelsRepository.createQueryBuilder('channel')
+				.innerJoin('channel_muting', 'channel_muting', 'channel_muting.channelId = channel.id')
+				.where('channel_muting.userId = :userId', { userId: params.requestUserId })
+				.andWhere(new Brackets(qb => {
+					qb.where('channel_muting.expiresAt IS NULL')
+						.orWhere('channel_muting.expiresAt > :now', { now: new Date() });
+				}));
+
+			if (opts?.joinUser) {
+				q.innerJoinAndSelect('channel.user', 'user');
+			}
+
+			if (opts?.joinBannerFile) {
+				q.leftJoinAndSelect('channel.banner', 'drive_file');
+			}
+
+			return q.getMany();
+		}
+	}
+
+	/**
+	 * 期限切れのチャンネルミュート情報を取得する.
+	 *
+	 * @param [opts]
+	 * @param {(boolean|undefined)} [opts.joinUser=undefined] チャンネルミュートを設定したユーザ情報をJOINするかどうか(falseまたは省略時はJOINしない).
+	 * @param {(boolean|undefined)} [opts.joinChannel=undefined] ミュート先のチャンネル情報をJOINするかどうか(falseまたは省略時はJOINしない).
+	 */
+	public async findExpiredMutings(opts?: {
+		joinUser?: boolean;
+		joinChannel?: boolean;
+	}): Promise<MiChannelMuting[]> {
+		const now = new Date();
+		const q = this.channelMutingRepository.createQueryBuilder('channel_muting')
+			.where('channel_muting.expiresAt < :now', { now });
+
+		if (opts?.joinUser) {
+			q.innerJoinAndSelect('channel_muting.user', 'user');
+		}
+
+		if (opts?.joinChannel) {
+			q.leftJoinAndSelect('channel_muting.channel', 'channel');
+		}
+
+		return q.getMany();
+	}
+
+	/**
+	 * 既にミュートされているかどうかをキャッシュから取得する.
+	 * @param params
+	 * @param params.requestUserId
+	 */
+	@bindThis
+	public async isMuted(params: {
+		requestUserId: MiUser['id'],
+		targetChannelId: MiChannel['id'],
+	}): Promise<boolean> {
+		const mutedChannels = await this.mutingChannelsCache.get(params.requestUserId);
+		return (mutedChannels?.has(params.targetChannelId) ?? false);
+	}
+
+	/**
+	 * チャンネルをミュートする.
+	 * @param params
+	 * @param {(Date|null|undefined)} [params.expiresAt] ミュートの有効期限. nullまたは省略時は無期限.
+	 */
+	@bindThis
+	public async mute(params: {
+		requestUserId: MiUser['id'],
+		targetChannelId: MiChannel['id'],
+		expiresAt?: Date | null,
+	}): Promise<void> {
+		await this.channelMutingRepository.insert({
+			id: this.idService.gen(),
+			userId: params.requestUserId,
+			channelId: params.targetChannelId,
+			expiresAt: params.expiresAt,
+		});
+
+		this.globalEventService.publishInternalEvent('muteChannel', {
+			userId: params.requestUserId,
+			channelId: params.targetChannelId,
+		});
+	}
+
+	/**
+	 * チャンネルのミュートを解除する.
+	 * @param params
+	 */
+	@bindThis
+	public async unmute(params: {
+		requestUserId: MiUser['id'],
+		targetChannelId: MiChannel['id'],
+	}): Promise<void> {
+		await this.channelMutingRepository.delete({
+			userId: params.requestUserId,
+			channelId: params.targetChannelId,
+		});
+
+		this.globalEventService.publishInternalEvent('unmuteChannel', {
+			userId: params.requestUserId,
+			channelId: params.targetChannelId,
+		});
+	}
+
+	/**
+	 * 期限切れのチャンネルミュート情報を削除する.
+	 */
+	@bindThis
+	public async eraseExpiredMutings(): Promise<void> {
+		const expiredMutings = await this.findExpiredMutings();
+		await this.channelMutingRepository.delete({ id: In(expiredMutings.map(x => x.id)) });
+
+		const userIds = [...new Set(expiredMutings.map(x => x.userId))];
+		for (const userId of userIds) {
+			this.mutingChannelsCache.refresh(userId).then();
+		}
+	}
+
+	@bindThis
+	private async onMessage(_: string, data: string): Promise<void> {
+		const obj = JSON.parse(data);
+
+		if (obj.channel === 'internal') {
+			const { type, body } = obj.message as GlobalEvents['internal']['payload'];
+			switch (type) {
+				case 'muteChannel': {
+					this.mutingChannelsCache.refresh(body.userId).then();
+					break;
+				}
+				case 'unmuteChannel': {
+					this.mutingChannelsCache.delete(body.userId).then();
+					break;
+				}
+			}
+		}
+	}
+
+	@bindThis
+	public dispose(): void {
+		this.mutingChannelsCache.dispose();
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}
diff --git a/packages/backend/src/core/CoreModule.ts b/packages/backend/src/core/CoreModule.ts
index a30bff0fe4..8c8d22c77d 100644
--- a/packages/backend/src/core/CoreModule.ts
+++ b/packages/backend/src/core/CoreModule.ts
@@ -15,6 +15,7 @@ import { SystemWebhookService } from '@/core/SystemWebhookService.js';
 import { UserSearchService } from '@/core/UserSearchService.js';
 import { WebhookTestService } from '@/core/WebhookTestService.js';
 import { FlashService } from '@/core/FlashService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { AccountMoveService } from './AccountMoveService.js';
 import { AccountUpdateService } from './AccountUpdateService.js';
 import { AiService } from './AiService.js';
@@ -225,6 +226,7 @@ const $FeaturedService: Provider = { provide: 'FeaturedService', useExisting: Fe
 const $FanoutTimelineService: Provider = { provide: 'FanoutTimelineService', useExisting: FanoutTimelineService };
 const $FanoutTimelineEndpointService: Provider = { provide: 'FanoutTimelineEndpointService', useExisting: FanoutTimelineEndpointService };
 const $ChannelFollowingService: Provider = { provide: 'ChannelFollowingService', useExisting: ChannelFollowingService };
+const $ChannelMutingService: Provider = { provide: 'ChannelMutingService', useExisting: ChannelMutingService };
 const $ChatService: Provider = { provide: 'ChatService', useExisting: ChatService };
 const $RegistryApiService: Provider = { provide: 'RegistryApiService', useExisting: RegistryApiService };
 const $ReversiService: Provider = { provide: 'ReversiService', useExisting: ReversiService };
@@ -378,6 +380,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		FanoutTimelineService,
 		FanoutTimelineEndpointService,
 		ChannelFollowingService,
+		ChannelMutingService,
 		ChatService,
 		RegistryApiService,
 		ReversiService,
@@ -527,6 +530,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$FanoutTimelineService,
 		$FanoutTimelineEndpointService,
 		$ChannelFollowingService,
+		$ChannelMutingService,
 		$ChatService,
 		$RegistryApiService,
 		$ReversiService,
@@ -677,6 +681,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		FanoutTimelineService,
 		FanoutTimelineEndpointService,
 		ChannelFollowingService,
+		ChannelMutingService,
 		ChatService,
 		RegistryApiService,
 		ReversiService,
@@ -824,6 +829,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$FanoutTimelineService,
 		$FanoutTimelineEndpointService,
 		$ChannelFollowingService,
+		$ChannelMutingService,
 		$ChatService,
 		$RegistryApiService,
 		$ReversiService,
diff --git a/packages/backend/src/core/FanoutTimelineEndpointService.ts b/packages/backend/src/core/FanoutTimelineEndpointService.ts
index 94c5691bf4..e39d70d683 100644
--- a/packages/backend/src/core/FanoutTimelineEndpointService.ts
+++ b/packages/backend/src/core/FanoutTimelineEndpointService.ts
@@ -19,6 +19,8 @@ import { isQuote, isRenote } from '@/misc/is-renote.js';
 import { CacheService } from '@/core/CacheService.js';
 import { isReply } from '@/misc/is-reply.js';
 import { isInstanceMuted } from '@/misc/is-instance-muted.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+import { isChannelRelated } from '@/misc/is-channel-related.js';
 
 type NoteFilter = (note: MiNote) => boolean;
 
@@ -35,6 +37,7 @@ type TimelineOptions = {
 	ignoreAuthorFromBlock?: boolean;
 	ignoreAuthorFromMute?: boolean;
 	ignoreAuthorFromInstanceBlock?: boolean;
+	ignoreAuthorChannelFromMute?: boolean;
 	excludeNoFiles?: boolean;
 	excludeReplies?: boolean;
 	excludePureRenotes: boolean;
@@ -55,6 +58,7 @@ export class FanoutTimelineEndpointService {
 		private cacheService: CacheService,
 		private fanoutTimelineService: FanoutTimelineService,
 		private utilityService: UtilityService,
+		private channelMutingService: ChannelMutingService,
 	) {
 	}
 
@@ -111,11 +115,13 @@ export class FanoutTimelineEndpointService {
 					userIdsWhoMeMutingRenotes,
 					userIdsWhoBlockingMe,
 					userMutedInstances,
+					userMutedChannels,
 				] = await Promise.all([
 					this.cacheService.userMutingsCache.fetch(ps.me.id),
 					this.cacheService.renoteMutingsCache.fetch(ps.me.id),
 					this.cacheService.userBlockedCache.fetch(ps.me.id),
 					this.cacheService.userProfileCache.fetch(me.id).then(p => new Set(p.mutedInstances)),
+					this.channelMutingService.mutingChannelsCache.fetch(me.id),
 				]);
 
 				const parentFilter = filter;
@@ -126,6 +132,7 @@ export class FanoutTimelineEndpointService {
 					if (isUserRelated(note.renote, userIdsWhoMeMuting, ps.ignoreAuthorFromMute)) return false;
 					if (!ps.ignoreAuthorFromMute && isRenote(note) && !isQuote(note) && userIdsWhoMeMutingRenotes.has(note.userId)) return false;
 					if (isInstanceMuted(note, userMutedInstances)) return false;
+					if (isChannelRelated(note, userMutedChannels, ps.ignoreAuthorChannelFromMute)) return false;
 
 					return parentFilter(note);
 				};
diff --git a/packages/backend/src/core/GlobalEventService.ts b/packages/backend/src/core/GlobalEventService.ts
index 3215b41c8d..f4c747b139 100644
--- a/packages/backend/src/core/GlobalEventService.ts
+++ b/packages/backend/src/core/GlobalEventService.ts
@@ -255,6 +255,8 @@ export interface InternalEventTypes {
 	metaUpdated: { before?: MiMeta; after: MiMeta; };
 	followChannel: { userId: MiUser['id']; channelId: MiChannel['id']; };
 	unfollowChannel: { userId: MiUser['id']; channelId: MiChannel['id']; };
+	muteChannel: { userId: MiUser['id']; channelId: MiChannel['id']; };
+	unmuteChannel: { userId: MiUser['id']; channelId: MiChannel['id']; };
 	updateUserProfile: MiUserProfile;
 	mute: { muterId: MiUser['id']; muteeId: MiUser['id']; };
 	unmute: { muterId: MiUser['id']; muteeId: MiUser['id']; };
diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index b6acf4c5fb..748f2cbad9 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -604,6 +604,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 			replyUserHost: data.reply ? data.reply.userHost : null,
 			renoteUserId: data.renote ? data.renote.userId : null,
 			renoteUserHost: data.renote ? data.renote.userHost : null,
+			renoteChannelId: data.renote ? data.renote.channelId : null,
 			userHost: user.host,
 		});
 
diff --git a/packages/backend/src/core/WebhookTestService.ts b/packages/backend/src/core/WebhookTestService.ts
index 6714bda9a9..b112912b1b 100644
--- a/packages/backend/src/core/WebhookTestService.ts
+++ b/packages/backend/src/core/WebhookTestService.ts
@@ -106,6 +106,7 @@ function generateDummyNote(override?: Partial<MiNote>): MiNote {
 		replyUserHost: null,
 		renoteUserId: null,
 		renoteUserHost: null,
+		renoteChannelId: null,
 		...override,
 	};
 }
diff --git a/packages/backend/src/core/entities/ChannelEntityService.ts b/packages/backend/src/core/entities/ChannelEntityService.ts
index 1ba7ca8e57..9ee918bea3 100644
--- a/packages/backend/src/core/entities/ChannelEntityService.ts
+++ b/packages/backend/src/core/entities/ChannelEntityService.ts
@@ -4,36 +4,40 @@
  */
 
 import { Inject, Injectable } from '@nestjs/common';
+import { In } from 'typeorm';
 import { DI } from '@/di-symbols.js';
-import type { ChannelFavoritesRepository, ChannelFollowingsRepository, ChannelsRepository, DriveFilesRepository, NotesRepository } from '@/models/_.js';
+import type {
+	ChannelFavoritesRepository,
+	ChannelFollowingsRepository, ChannelMutingRepository,
+	ChannelsRepository,
+	DriveFilesRepository,
+	MiDriveFile,
+	MiNote,
+	NotesRepository,
+} from '@/models/_.js';
 import type { Packed } from '@/misc/json-schema.js';
-import type { } from '@/models/Blocking.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiChannel } from '@/models/Channel.js';
 import { bindThis } from '@/decorators.js';
 import { IdService } from '@/core/IdService.js';
 import { DriveFileEntityService } from './DriveFileEntityService.js';
 import { NoteEntityService } from './NoteEntityService.js';
-import { In } from 'typeorm';
 
 @Injectable()
 export class ChannelEntityService {
 	constructor(
 		@Inject(DI.channelsRepository)
 		private channelsRepository: ChannelsRepository,
-
 		@Inject(DI.channelFollowingsRepository)
 		private channelFollowingsRepository: ChannelFollowingsRepository,
-
 		@Inject(DI.channelFavoritesRepository)
 		private channelFavoritesRepository: ChannelFavoritesRepository,
-
+		@Inject(DI.channelMutingRepository)
+		private channelMutingRepository: ChannelMutingRepository,
 		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
-
 		@Inject(DI.driveFilesRepository)
 		private driveFilesRepository: DriveFilesRepository,
-
 		private noteEntityService: NoteEntityService,
 		private driveFileEntityService: DriveFileEntityService,
 		private idService: IdService,
@@ -45,31 +49,59 @@ export class ChannelEntityService {
 		src: MiChannel['id'] | MiChannel,
 		me?: { id: MiUser['id'] } | null | undefined,
 		detailed?: boolean,
+		opts?: {
+			bannerFiles?: Map<MiDriveFile['id'], MiDriveFile>;
+			followings?: Set<MiChannel['id']>;
+			favorites?: Set<MiChannel['id']>;
+			muting?: Set<MiChannel['id']>;
+			pinnedNotes?: Map<MiNote['id'], MiNote>;
+		},
 	): Promise<Packed<'Channel'>> {
 		const channel = typeof src === 'object' ? src : await this.channelsRepository.findOneByOrFail({ id: src });
-		const meId = me ? me.id : null;
 
-		const banner = channel.bannerId ? await this.driveFilesRepository.findOneBy({ id: channel.bannerId }) : null;
+		let bannerFile: MiDriveFile | null = null;
+		if (channel.bannerId) {
+			bannerFile = opts?.bannerFiles?.get(channel.bannerId)
+				?? await this.driveFilesRepository.findOneByOrFail({ id: channel.bannerId });
+		}
+
+		let isFollowing = false;
+		let isFavorited = false;
+		let isMuting = false;
+		if (me) {
+			isFollowing = opts?.followings?.has(channel.id) ?? await this.channelFollowingsRepository.exists({
+				where: {
+					followerId: me.id,
+					followeeId: channel.id,
+				},
+			});
 
-		const isFollowing = meId ? await this.channelFollowingsRepository.exists({
-			where: {
-				followerId: meId,
-				followeeId: channel.id,
-			},
-		}) : false;
+			isFavorited = opts?.favorites?.has(channel.id) ?? await this.channelFavoritesRepository.exists({
+				where: {
+					userId: me.id,
+					channelId: channel.id,
+				},
+			});
 
-		const isFavorited = meId ? await this.channelFavoritesRepository.exists({
-			where: {
-				userId: meId,
-				channelId: channel.id,
-			},
-		}) : false;
+			isMuting = opts?.muting?.has(channel.id) ?? await this.channelMutingRepository.exists({
+				where: {
+					userId: me.id,
+					channelId: channel.id,
+				},
+			});
+		}
 
-		const pinnedNotes = channel.pinnedNoteIds.length > 0 ? await this.notesRepository.find({
-			where: {
-				id: In(channel.pinnedNoteIds),
-			},
-		}) : [];
+		const pinnedNotes = Array.of<MiNote>();
+		if (channel.pinnedNoteIds.length > 0) {
+			pinnedNotes.push(
+				...(
+					opts?.pinnedNotes
+						// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+						? channel.pinnedNoteIds.map(it => opts.pinnedNotes!.get(it)).filter(it => it != null)
+						: await this.notesRepository.findBy({ id: In(channel.pinnedNoteIds) })
+				),
+			);
+		}
 
 		return {
 			id: channel.id,
@@ -78,7 +110,7 @@ export class ChannelEntityService {
 			name: channel.name,
 			description: channel.description,
 			userId: channel.userId,
-			bannerUrl: banner ? this.driveFileEntityService.getPublicUrl(banner) : null,
+			bannerUrl: bannerFile ? this.driveFileEntityService.getPublicUrl(bannerFile) : null,
 			pinnedNoteIds: channel.pinnedNoteIds,
 			color: channel.color,
 			isArchived: channel.isArchived,
@@ -90,6 +122,7 @@ export class ChannelEntityService {
 			...(me ? {
 				isFollowing,
 				isFavorited,
+				isMuting,
 				hasUnreadNote: false, // 後方互換性のため
 			} : {}),
 
@@ -98,5 +131,72 @@ export class ChannelEntityService {
 			} : {}),
 		};
 	}
+
+	@bindThis
+	public async packMany(
+		src: MiChannel['id'][] | MiChannel[],
+		me?: { id: MiUser['id'] } | null | undefined,
+		detailed?: boolean,
+	): Promise<Packed<'Channel'>[]> {
+		// IDのみの要素がある場合、DBからオブジェクトを取得して補う
+		const channels = src.filter(it => typeof it === 'object') as MiChannel[];
+		channels.push(
+			...(await this.channelsRepository.find({
+				where: {
+					id: In(src.filter(it => typeof it !== 'object') as MiChannel['id'][]),
+				},
+			})),
+		);
+		channels.sort((a, b) => a.id.localeCompare(b.id));
+
+		const bannerFiles = await this.driveFilesRepository
+			.findBy({
+				id: In(channels.map(it => it.bannerId).filter(it => it != null)),
+			})
+			.then(it => new Map(it.map(it => [it.id, it])));
+
+		const followings = me
+			? await this.channelFollowingsRepository
+				.findBy({
+					followerId: me.id,
+					followeeId: In(channels.map(it => it.id)),
+				})
+				.then(it => new Set(it.map(it => it.followeeId)))
+			: new Set<MiChannel['id']>();
+
+		const favorites = me
+			? await this.channelFavoritesRepository
+				.findBy({
+					userId: me.id,
+					channelId: In(channels.map(it => it.id)),
+				})
+				.then(it => new Set(it.map(it => it.channelId)))
+			: new Set<MiChannel['id']>();
+
+		const muting = me
+			? await this.channelMutingRepository
+				.findBy({
+					userId: me.id,
+					channelId: In(channels.map(it => it.id)),
+				})
+				.then(it => new Set(it.map(it => it.channelId)))
+			: new Set<MiChannel['id']>();
+
+		const pinnedNotes = await this.notesRepository
+			.find({
+				where: {
+					id: In(channels.flatMap(it => it.pinnedNoteIds)),
+				},
+			})
+			.then(it => new Map(it.map(it => [it.id, it])));
+
+		return Promise.all(channels.map(it => this.pack(it, me, detailed, {
+			bannerFiles,
+			followings,
+			favorites,
+			muting,
+			pinnedNotes,
+		})));
+	}
 }
 
diff --git a/packages/backend/src/di-symbols.ts b/packages/backend/src/di-symbols.ts
index c915133453..b9ca76233c 100644
--- a/packages/backend/src/di-symbols.ts
+++ b/packages/backend/src/di-symbols.ts
@@ -70,6 +70,7 @@ export const DI = {
 	channelsRepository: Symbol('channelsRepository'),
 	channelFollowingsRepository: Symbol('channelFollowingsRepository'),
 	channelFavoritesRepository: Symbol('channelFavoritesRepository'),
+	channelMutingRepository: Symbol('channelMutingRepository'),
 	registryItemsRepository: Symbol('registryItemsRepository'),
 	webhooksRepository: Symbol('webhooksRepository'),
 	systemWebhooksRepository: Symbol('systemWebhooksRepository'),
diff --git a/packages/backend/src/misc/is-channel-related.ts b/packages/backend/src/misc/is-channel-related.ts
new file mode 100644
index 0000000000..fef736dad6
--- /dev/null
+++ b/packages/backend/src/misc/is-channel-related.ts
@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { MiNote } from '@/models/Note.js';
+import { Packed } from '@/misc/json-schema.js';
+
+/**
+ * {@link note}が{@link channelIds}のチャンネルに関連するかどうかを判定し、関連する場合はtrueを返します。
+ * 関連するというのは、{@link channelIds}のチャンネルに向けての投稿であるか、またはそのチャンネルの投稿をリノート・引用リノートした投稿であるかを指します。
+ *
+ * @param note 確認対象のノート
+ * @param channelIds 確認対象のチャンネルID一覧
+ * @param ignoreAuthor trueの場合、ノートの所属チャンネルが{@link channelIds}に含まれていても無視します（デフォルトはfalse）
+ */
+export function isChannelRelated(note: MiNote | Packed<'Note'>, channelIds: Set<string>, ignoreAuthor = false): boolean {
+	// ノートの所属チャンネルが確認対象のチャンネルID一覧に含まれている場合
+	if (!ignoreAuthor && note.channelId && channelIds.has(note.channelId)) {
+		return true;
+	}
+
+	const renoteChannelId = note.renote?.channelId;
+	if (renoteChannelId != null && renoteChannelId !== note.channelId && channelIds.has(renoteChannelId)) {
+		return true;
+	}
+
+	// NOTE: リプライはchannelIdのチェックだけでOKなはずなので見てない(チャンネルのノートにチャンネル外からのリプライまたはその逆はないはずなので）
+
+	return false;
+}
diff --git a/packages/backend/src/models/ChannelMuting.ts b/packages/backend/src/models/ChannelMuting.ts
new file mode 100644
index 0000000000..11ac7e5cef
--- /dev/null
+++ b/packages/backend/src/models/ChannelMuting.ts
@@ -0,0 +1,46 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Column, Entity, Index, JoinColumn, ManyToOne, PrimaryColumn } from 'typeorm';
+import { id } from './util/id.js';
+import { MiUser } from './User.js';
+import { MiChannel } from './Channel.js';
+
+@Entity('channel_muting')
+@Index(['userId', 'channelId'], {})
+export class MiChannelMuting {
+	@PrimaryColumn(id())
+	public id: string;
+
+	@Index()
+	@Column({
+		...id(),
+	})
+	public userId: MiUser['id'];
+
+	@ManyToOne(type => MiUser, {
+		onDelete: 'CASCADE',
+	})
+	@JoinColumn()
+	public user: MiUser | null;
+
+	@Index()
+	@Column({
+		...id(),
+	})
+	public channelId: MiChannel['id'];
+
+	@ManyToOne(type => MiChannel, {
+		onDelete: 'CASCADE',
+	})
+	@JoinColumn()
+	public channel: MiChannel | null;
+
+	@Index()
+	@Column('timestamp with time zone', {
+		nullable: true,
+	})
+	public expiresAt: Date | null;
+}
diff --git a/packages/backend/src/models/Note.ts b/packages/backend/src/models/Note.ts
index 26d5c1d535..23e5960b60 100644
--- a/packages/backend/src/models/Note.ts
+++ b/packages/backend/src/models/Note.ts
@@ -248,6 +248,14 @@ export class MiNote {
 	})
 	public renoteUserHost: string | null;
 
+	@Column({
+		...id(),
+		nullable: true,
+		comment: '[Denormalized]',
+	})
+	public renoteChannelId: MiChannel['id'] | null;
+	//#endregion
+
 	constructor(data: Partial<MiNote>) {
 		if (data == null) return;
 
diff --git a/packages/backend/src/models/RepositoryModule.ts b/packages/backend/src/models/RepositoryModule.ts
index 146dbbc3b8..e3db6f8838 100644
--- a/packages/backend/src/models/RepositoryModule.ts
+++ b/packages/backend/src/models/RepositoryModule.ts
@@ -21,6 +21,7 @@ import {
 	MiChannel,
 	MiChannelFavorite,
 	MiChannelFollowing,
+	MiChannelMuting,
 	MiClip,
 	MiClipFavorite,
 	MiClipNote,
@@ -429,6 +430,12 @@ const $channelFavoritesRepository: Provider = {
 	inject: [DI.db],
 };
 
+const $channelMutingRepository: Provider = {
+	provide: DI.channelMutingRepository,
+	useFactory: (db: DataSource) => db.getRepository(MiChannelMuting).extend(miRepository as MiRepository<MiChannelMuting>),
+	inject: [DI.db],
+};
+
 const $registryItemsRepository: Provider = {
 	provide: DI.registryItemsRepository,
 	useFactory: (db: DataSource) => db.getRepository(MiRegistryItem).extend(miRepository as MiRepository<MiRegistryItem>),
@@ -597,6 +604,7 @@ const $reversiGamesRepository: Provider = {
 		$channelsRepository,
 		$channelFollowingsRepository,
 		$channelFavoritesRepository,
+		$channelMutingRepository,
 		$registryItemsRepository,
 		$webhooksRepository,
 		$systemWebhooksRepository,
@@ -674,6 +682,7 @@ const $reversiGamesRepository: Provider = {
 		$channelsRepository,
 		$channelFollowingsRepository,
 		$channelFavoritesRepository,
+		$channelMutingRepository,
 		$registryItemsRepository,
 		$webhooksRepository,
 		$systemWebhooksRepository,
diff --git a/packages/backend/src/models/_.ts b/packages/backend/src/models/_.ts
index 84b5cbed0a..8c77a225c8 100644
--- a/packages/backend/src/models/_.ts
+++ b/packages/backend/src/models/_.ts
@@ -32,6 +32,7 @@ import { MiBubbleGameRecord } from '@/models/BubbleGameRecord.js';
 import { MiChannel } from '@/models/Channel.js';
 import { MiChannelFavorite } from '@/models/ChannelFavorite.js';
 import { MiChannelFollowing } from '@/models/ChannelFollowing.js';
+import { MiChannelMuting } from "@/models/ChannelMuting.js";
 import { MiChatApproval } from '@/models/ChatApproval.js';
 import { MiChatMessage } from '@/models/ChatMessage.js';
 import { MiChatRoom } from '@/models/ChatRoom.js';
@@ -172,6 +173,7 @@ export {
 	MiBlocking,
 	MiChannelFollowing,
 	MiChannelFavorite,
+	MiChannelMuting,
 	MiClip,
 	MiClipNote,
 	MiClipFavorite,
@@ -251,6 +253,7 @@ export type AuthSessionsRepository = Repository<MiAuthSession> & MiRepository<Mi
 export type BlockingsRepository = Repository<MiBlocking> & MiRepository<MiBlocking>;
 export type ChannelFollowingsRepository = Repository<MiChannelFollowing> & MiRepository<MiChannelFollowing>;
 export type ChannelFavoritesRepository = Repository<MiChannelFavorite> & MiRepository<MiChannelFavorite>;
+export type ChannelMutingRepository = Repository<MiChannelMuting> & MiRepository<MiChannelMuting>;
 export type ClipsRepository = Repository<MiClip> & MiRepository<MiClip>;
 export type ClipNotesRepository = Repository<MiClipNote> & MiRepository<MiClipNote>;
 export type ClipFavoritesRepository = Repository<MiClipFavorite> & MiRepository<MiClipFavorite>;
diff --git a/packages/backend/src/models/json-schema/channel.ts b/packages/backend/src/models/json-schema/channel.ts
index d233f7858d..a7966ffdb3 100644
--- a/packages/backend/src/models/json-schema/channel.ts
+++ b/packages/backend/src/models/json-schema/channel.ts
@@ -80,6 +80,10 @@ export const packedChannelSchema = {
 			type: 'boolean',
 			optional: true, nullable: false,
 		},
+		isMuting: {
+			type: 'boolean',
+			optional: true, nullable: false,
+		},
 		pinnedNotes: {
 			type: 'array',
 			optional: true, nullable: false,
diff --git a/packages/backend/src/postgres.ts b/packages/backend/src/postgres.ts
index f6cbbbe64c..a3e659c110 100644
--- a/packages/backend/src/postgres.ts
+++ b/packages/backend/src/postgres.ts
@@ -25,6 +25,7 @@ import { MiAuthSession } from '@/models/AuthSession.js';
 import { MiBlocking } from '@/models/Blocking.js';
 import { MiChannelFollowing } from '@/models/ChannelFollowing.js';
 import { MiChannelFavorite } from '@/models/ChannelFavorite.js';
+import { MiChannelMuting } from "@/models/ChannelMuting.js";
 import { MiClip } from '@/models/Clip.js';
 import { MiClipNote } from '@/models/ClipNote.js';
 import { MiClipFavorite } from '@/models/ClipFavorite.js';
@@ -239,6 +240,7 @@ export const entities = [
 	MiChannel,
 	MiChannelFollowing,
 	MiChannelFavorite,
+	MiChannelMuting,
 	MiRegistryItem,
 	MiAd,
 	MiPasswordResetRequest,
diff --git a/packages/backend/src/queue/processors/CheckExpiredMutingsProcessorService.ts b/packages/backend/src/queue/processors/CheckExpiredMutingsProcessorService.ts
index 448fc9c763..e898e6dd48 100644
--- a/packages/backend/src/queue/processors/CheckExpiredMutingsProcessorService.ts
+++ b/packages/backend/src/queue/processors/CheckExpiredMutingsProcessorService.ts
@@ -4,14 +4,13 @@
  */
 
 import { Inject, Injectable } from '@nestjs/common';
-import { In } from 'typeorm';
 import { DI } from '@/di-symbols.js';
 import type { MutingsRepository } from '@/models/_.js';
 import type Logger from '@/logger.js';
 import { bindThis } from '@/decorators.js';
 import { UserMutingService } from '@/core/UserMutingService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { QueueLoggerService } from '../QueueLoggerService.js';
-import type * as Bull from 'bullmq';
 
 @Injectable()
 export class CheckExpiredMutingsProcessorService {
@@ -22,6 +21,7 @@ export class CheckExpiredMutingsProcessorService {
 		private mutingsRepository: MutingsRepository,
 
 		private userMutingService: UserMutingService,
+		private channelMutingService: ChannelMutingService,
 		private queueLoggerService: QueueLoggerService,
 	) {
 		this.logger = this.queueLoggerService.logger.createSubLogger('check-expired-mutings');
@@ -41,6 +41,8 @@ export class CheckExpiredMutingsProcessorService {
 			await this.userMutingService.unmute(expired);
 		}
 
+		await this.channelMutingService.eraseExpiredMutings();
+
 		this.logger.succ('All expired mutings checked.');
 	}
 }
diff --git a/packages/backend/src/server/api/StreamingApiServerService.ts b/packages/backend/src/server/api/StreamingApiServerService.ts
index 2a4e1fc574..21f2f0b7e2 100644
--- a/packages/backend/src/server/api/StreamingApiServerService.ts
+++ b/packages/backend/src/server/api/StreamingApiServerService.ts
@@ -15,6 +15,7 @@ import { CacheService } from '@/core/CacheService.js';
 import { MiLocalUser } from '@/models/User.js';
 import { UserService } from '@/core/UserService.js';
 import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { AuthenticateService, AuthenticationError } from './AuthenticateService.js';
 import MainStreamConnection from './stream/Connection.js';
 import { ChannelsService } from './stream/ChannelsService.js';
@@ -39,6 +40,7 @@ export class StreamingApiServerService {
 		private notificationService: NotificationService,
 		private usersService: UserService,
 		private channelFollowingService: ChannelFollowingService,
+		private channelMutingService: ChannelMutingService,
 	) {
 	}
 
@@ -97,6 +99,7 @@ export class StreamingApiServerService {
 				this.notificationService,
 				this.cacheService,
 				this.channelFollowingService,
+				this.channelMutingService,
 				user, app,
 			);
 
diff --git a/packages/backend/src/server/api/endpoint-list.ts b/packages/backend/src/server/api/endpoint-list.ts
index f4aa07875d..9aecc0f0fd 100644
--- a/packages/backend/src/server/api/endpoint-list.ts
+++ b/packages/backend/src/server/api/endpoint-list.ts
@@ -143,6 +143,9 @@ export * as 'channels/timeline' from './endpoints/channels/timeline.js';
 export * as 'channels/unfavorite' from './endpoints/channels/unfavorite.js';
 export * as 'channels/unfollow' from './endpoints/channels/unfollow.js';
 export * as 'channels/update' from './endpoints/channels/update.js';
+export * as 'channels/mute/create' from './endpoints/channels/mute/create.js';
+export * as 'channels/mute/delete' from './endpoints/channels/mute/delete.js';
+export * as 'channels/mute/list' from './endpoints/channels/mute/list.js';
 export * as 'charts/active-users' from './endpoints/charts/active-users.js';
 export * as 'charts/ap-request' from './endpoints/charts/ap-request.js';
 export * as 'charts/drive' from './endpoints/charts/drive.js';
diff --git a/packages/backend/src/server/api/endpoints/antennas/notes.ts b/packages/backend/src/server/api/endpoints/antennas/notes.ts
index b2d9cea03c..c59479d370 100644
--- a/packages/backend/src/server/api/endpoints/antennas/notes.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/notes.ts
@@ -5,6 +5,7 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import * as Redis from 'ioredis';
+import { Brackets } from 'typeorm';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import type { NotesRepository, AntennasRepository } from '@/models/_.js';
 import { QueryService } from '@/core/QueryService.js';
@@ -14,6 +15,7 @@ import { IdService } from '@/core/IdService.js';
 import { FanoutTimelineService } from '@/core/FanoutTimelineService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { trackPromise } from '@/misc/promise-tracker.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -69,6 +71,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private queryService: QueryService,
 		private fanoutTimelineService: FanoutTimelineService,
 		private globalEventService: GlobalEventService,
+		private channelMutingService: ChannelMutingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -108,6 +111,21 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				.leftJoinAndSelect('reply.user', 'replyUser')
 				.leftJoinAndSelect('renote.user', 'renoteUser');
 
+			// -- ミュートされたチャンネル対策
+			const mutingChannelIds = await this.channelMutingService
+				.list({ requestUserId: me.id }, { idOnly: true })
+				.then(x => x.map(x => x.id));
+			if (mutingChannelIds.length > 0) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.channelId IS NULL');
+					qb.orWhere('note.channelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+				}));
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteChannelId IS NULL');
+					qb.orWhere('note.renoteChannelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+				}));
+			}
+
 			// NOTE: センシティブ除外の設定はこのエンドポイントでは無視する。
 			// https://github.com/misskey-dev/misskey/pull/15346#discussion_r1929950255
 
diff --git a/packages/backend/src/server/api/endpoints/channels/mute/create.ts b/packages/backend/src/server/api/endpoints/channels/mute/create.ts
new file mode 100644
index 0000000000..26ce707c7a
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/channels/mute/create.ts
@@ -0,0 +1,90 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { ChannelsRepository } from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { ApiError } from '@/server/api/error.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+
+export const meta = {
+	tags: ['channels', 'mute'],
+
+	requireCredential: true,
+	prohibitMoved: true,
+
+	kind: 'write:channels',
+
+	errors: {
+		noSuchChannel: {
+			message: 'No such Channel.',
+			code: 'NO_SUCH_CHANNEL',
+			id: '7174361e-d58f-31d6-2e7c-6fb830786a3f',
+		},
+
+		alreadyMuting: {
+			message: 'You are already muting that user.',
+			code: 'ALREADY_MUTING_CHANNEL',
+			id: '5a251978-769a-da44-3e89-3931e43bb592',
+		},
+
+		expiresAtIsPast: {
+			message: 'Cannot set past date to "expiresAt".',
+			code: 'EXPIRES_AT_IS_PAST',
+			id: '42b32236-df2c-a45f-fdbf-def67268f749',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		channelId: { type: 'string', format: 'misskey:id' },
+		expiresAt: {
+			type: 'integer',
+			nullable: true,
+			description: 'A Unix Epoch timestamp that must lie in the future. `null` means an indefinite mute.',
+		},
+	},
+	required: ['channelId'],
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		@Inject(DI.channelsRepository)
+		private channelsRepository: ChannelsRepository,
+		private channelMutingService: ChannelMutingService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			// Check if exists the channel
+			const targetChannel = await this.channelsRepository.findOneBy({ id: ps.channelId });
+			if (!targetChannel) {
+				throw new ApiError(meta.errors.noSuchChannel);
+			}
+
+			// Check if already muting
+			const exist = await this.channelMutingService.isMuted({
+				requestUserId: me.id,
+				targetChannelId: targetChannel.id,
+			});
+			if (exist) {
+				throw new ApiError(meta.errors.alreadyMuting);
+			}
+
+			// Check if expiresAt is past
+			if (ps.expiresAt && ps.expiresAt <= Date.now()) {
+				throw new ApiError(meta.errors.expiresAtIsPast);
+			}
+
+			await this.channelMutingService.mute({
+				requestUserId: me.id,
+				targetChannelId: targetChannel.id,
+				expiresAt: ps.expiresAt ? new Date(ps.expiresAt) : null,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/channels/mute/delete.ts b/packages/backend/src/server/api/endpoints/channels/mute/delete.ts
new file mode 100644
index 0000000000..79abeebe99
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/channels/mute/delete.ts
@@ -0,0 +1,73 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import type { ChannelsRepository } from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+import { ApiError } from '@/server/api/error.js';
+
+export const meta = {
+	tags: ['channels', 'mute'],
+
+	requireCredential: true,
+	prohibitMoved: true,
+
+	kind: 'write:channels',
+
+	errors: {
+		noSuchChannel: {
+			message: 'No such Channel.',
+			code: 'NO_SUCH_CHANNEL',
+			id: 'e7998769-6e94-d9c2-6b8f-94a527314aba',
+		},
+
+		notMuting: {
+			message: 'You are not muting that channel.',
+			code: 'NOT_MUTING_CHANNEL',
+			id: '14d55962-6ea8-d990-1333-d6bef78dc2ab',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		channelId: { type: 'string', format: 'misskey:id' },
+	},
+	required: ['channelId'],
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		@Inject(DI.channelsRepository)
+		private channelsRepository: ChannelsRepository,
+		private channelMutingService: ChannelMutingService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			// Check if exists the channel
+			const targetChannel = await this.channelsRepository.findOneBy({ id: ps.channelId });
+			if (!targetChannel) {
+				throw new ApiError(meta.errors.noSuchChannel);
+			}
+
+			// Check muting
+			const exist = await this.channelMutingService.isMuted({
+				requestUserId: me.id,
+				targetChannelId: targetChannel.id,
+			});
+			if (!exist) {
+				throw new ApiError(meta.errors.notMuting);
+			}
+
+			await this.channelMutingService.unmute({
+				requestUserId: me.id,
+				targetChannelId: targetChannel.id,
+			});
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/channels/mute/list.ts b/packages/backend/src/server/api/endpoints/channels/mute/list.ts
new file mode 100644
index 0000000000..74338eea38
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/channels/mute/list.ts
@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+import { ChannelEntityService } from '@/core/entities/ChannelEntityService.js';
+
+export const meta = {
+	tags: ['channels', 'mute'],
+
+	requireCredential: true,
+	prohibitMoved: true,
+
+	kind: 'read:channels',
+
+	res: {
+		type: 'array',
+		optional: false, nullable: false,
+		items: {
+			type: 'object',
+			optional: false, nullable: false,
+			ref: 'Channel',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		private channelMutingService: ChannelMutingService,
+		private channelEntityService: ChannelEntityService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const mutings = await this.channelMutingService.list({
+				requestUserId: me.id,
+			});
+			return await this.channelEntityService.packMany(mutings, me);
+		});
+	}
+}
diff --git a/packages/backend/src/server/api/endpoints/channels/timeline.ts b/packages/backend/src/server/api/endpoints/channels/timeline.ts
index 46b050d4b4..4f56bc2110 100644
--- a/packages/backend/src/server/api/endpoints/channels/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/channels/timeline.ts
@@ -13,6 +13,7 @@ import { DI } from '@/di-symbols.js';
 import { IdService } from '@/core/IdService.js';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
 import { MiLocalUser } from '@/models/User.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -70,6 +71,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private queryService: QueryService,
 		private fanoutTimelineEndpointService: FanoutTimelineEndpointService,
 		private activeUsersChart: ActiveUsersChart,
+		private channelMutingService: ChannelMutingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -98,6 +100,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				useDbFallback: true,
 				redisTimelines: [`channelTimeline:${channel.id}`],
 				excludePureRenotes: false,
+				ignoreAuthorChannelFromMute: true,
 				dbFallback: async (untilId, sinceId, limit) => {
 					return await this.getFromDb({ untilId, sinceId, limit, channelId: channel.id }, me);
 				},
@@ -122,6 +125,16 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			.leftJoinAndSelect('note.channel', 'channel');
 
 		this.queryService.generateBaseNoteFilteringQuery(query, me);
+
+		if (me) {
+			const mutingChannelIds = await this.channelMutingService
+				.list({ requestUserId: me.id }, { idOnly: true })
+				.then(x => x.map(x => x.id).filter(x => x !== ps.channelId));
+			if (mutingChannelIds.length > 0) {
+				query.andWhere('note.channelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+				query.andWhere('note.renoteChannelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+			}
+		}
 		//#endregion
 
 		return await query.limit(ps.limit).getMany();
diff --git a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
index 2c8459525a..0a3602df20 100644
--- a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
@@ -18,6 +18,8 @@ import { QueryService } from '@/core/QueryService.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
 import { MiLocalUser } from '@/models/User.js';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -46,7 +48,7 @@ export const meta = {
 		bothWithRepliesAndWithFiles: {
 			message: 'Specifying both withReplies and withFiles is not supported',
 			code: 'BOTH_WITH_REPLIES_AND_WITH_FILES',
-			id: 'dfaa3eb7-8002-4cb7-bcc4-1095df46656f'
+			id: 'dfaa3eb7-8002-4cb7-bcc4-1095df46656f',
 		},
 	},
 } as const;
@@ -79,9 +81,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
 
-		@Inject(DI.channelFollowingsRepository)
-		private channelFollowingsRepository: ChannelFollowingsRepository,
-
 		private noteEntityService: NoteEntityService,
 		private roleService: RoleService,
 		private activeUsersChart: ActiveUsersChart,
@@ -89,6 +88,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private cacheService: CacheService,
 		private queryService: QueryService,
 		private userFollowingService: UserFollowingService,
+		private channelMutingService: ChannelMutingService,
+		private channelFollowingService: ChannelFollowingService,
 		private fanoutTimelineEndpointService: FanoutTimelineEndpointService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -196,11 +197,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		withReplies: boolean,
 	}, me: MiLocalUser) {
 		const followees = await this.userFollowingService.getFollowees(me.id);
-		const followingChannels = await this.channelFollowingsRepository.find({
-			where: {
-				followerId: me.id,
-			},
-		});
+
+		const mutingChannelIds = await this.channelMutingService
+			.list({ requestUserId: me.id }, { idOnly: true })
+			.then(x => x.map(x => x.id));
+		const followingChannelIds = await this.channelFollowingService
+			.list({ requestUserId: me.id }, { idOnly: true })
+			.then(x => x.map(x => x.id).filter(x => !mutingChannelIds.includes(x)));
 
 		const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
 			.andWhere(new Brackets(qb => {
@@ -219,9 +222,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			.leftJoinAndSelect('reply.user', 'replyUser')
 			.leftJoinAndSelect('renote.user', 'renoteUser');
 
-		if (followingChannels.length > 0) {
-			const followingChannelIds = followingChannels.map(x => x.followeeId);
-
+		if (followingChannelIds.length > 0) {
 			query.andWhere(new Brackets(qb => {
 				qb.where('note.channelId IN (:...followingChannelIds)', { followingChannelIds });
 				qb.orWhere('note.channelId IS NULL');
@@ -230,6 +231,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			query.andWhere('note.channelId IS NULL');
 		}
 
+		if (mutingChannelIds.length > 0) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteChannelId IS NULL');
+				qb.orWhere('note.renoteChannelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+			}));
+		}
+
 		if (!ps.withReplies) {
 			query.andWhere(new Brackets(qb => {
 				qb
diff --git a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
index ee61ab43da..ec9e52cf04 100644
--- a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
@@ -15,6 +15,7 @@ import { IdService } from '@/core/IdService.js';
 import { QueryService } from '@/core/QueryService.js';
 import { MiLocalUser } from '@/models/User.js';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -76,6 +77,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private idService: IdService,
 		private fanoutTimelineEndpointService: FanoutTimelineEndpointService,
 		private queryService: QueryService,
+		private channelMutingService: ChannelMutingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -157,7 +159,19 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 		this.queryService.generateVisibilityQuery(query, me);
 		this.queryService.generateBaseNoteFilteringQuery(query, me);
-		if (me) this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+		if (me) {
+			this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+
+			const mutedChannelIds = await this.channelMutingService
+				.list({ requestUserId: me.id }, { idOnly: true })
+				.then(x => x.map(x => x.id));
+			if (mutedChannelIds.length > 0) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteChannelId IS NULL')
+						.orWhere('note.renoteChannelId NOT IN (:...mutedChannelIds)', { mutedChannelIds });
+				}));
+			}
+		}
 
 		if (ps.withFiles) {
 			query.andWhere('note.fileIds != \'{}\'');
diff --git a/packages/backend/src/server/api/endpoints/notes/timeline.ts b/packages/backend/src/server/api/endpoints/notes/timeline.ts
index eeeb797efc..fe9c412be4 100644
--- a/packages/backend/src/server/api/endpoints/notes/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/timeline.ts
@@ -5,7 +5,7 @@
 
 import { Brackets } from 'typeorm';
 import { Inject, Injectable } from '@nestjs/common';
-import type { NotesRepository, ChannelFollowingsRepository, MiMeta } from '@/models/_.js';
+import type { NotesRepository, MiMeta } from '@/models/_.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { QueryService } from '@/core/QueryService.js';
 import ActiveUsersChart from '@/core/chart/charts/active-users.js';
@@ -16,6 +16,8 @@ import { CacheService } from '@/core/CacheService.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
 import { MiLocalUser } from '@/models/User.js';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -61,15 +63,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
 
-		@Inject(DI.channelFollowingsRepository)
-		private channelFollowingsRepository: ChannelFollowingsRepository,
-
 		private noteEntityService: NoteEntityService,
 		private activeUsersChart: ActiveUsersChart,
 		private idService: IdService,
 		private cacheService: CacheService,
 		private fanoutTimelineEndpointService: FanoutTimelineEndpointService,
 		private userFollowingService: UserFollowingService,
+		private channelMutingService: ChannelMutingService,
+		private channelFollowingService: ChannelFollowingService,
 		private queryService: QueryService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
@@ -140,11 +141,13 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 	private async getFromDb(ps: { untilId: string | null; sinceId: string | null; limit: number; includeMyRenotes: boolean; includeRenotedMyNotes: boolean; includeLocalRenotes: boolean; withFiles: boolean; withRenotes: boolean; }, me: MiLocalUser) {
 		const followees = await this.userFollowingService.getFollowees(me.id);
-		const followingChannels = await this.channelFollowingsRepository.find({
-			where: {
-				followerId: me.id,
-			},
-		});
+
+		const mutingChannelIds = await this.channelMutingService
+			.list({ requestUserId: me.id }, { idOnly: true })
+			.then(x => x.map(x => x.id));
+		const followingChannelIds = await this.channelFollowingService
+			.list({ requestUserId: me.id }, { idOnly: true })
+			.then(x => x.map(x => x.id).filter(x => !mutingChannelIds.includes(x)));
 
 		//#region Construct query
 		const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
@@ -154,15 +157,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			.leftJoinAndSelect('reply.user', 'replyUser')
 			.leftJoinAndSelect('renote.user', 'renoteUser');
 
-		if (followees.length > 0 && followingChannels.length > 0) {
+		if (followees.length > 0 && followingChannelIds.length > 0) {
 			// ユーザー・チャンネルともにフォローあり
 			const meOrFolloweeIds = [me.id, ...followees.map(f => f.followeeId)];
-			const followingChannelIds = followingChannels.map(x => x.followeeId);
 			query.andWhere(new Brackets(qb => {
 				qb
 					.where(new Brackets(qb2 => {
 						qb2
-							.where('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds })
+							.andWhere('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds })
 							.andWhere('note.channelId IS NULL');
 					}))
 					.orWhere('note.channelId IN (:...followingChannelIds)', { followingChannelIds });
@@ -170,22 +172,32 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		} else if (followees.length > 0) {
 			// ユーザーフォローのみ（チャンネルフォローなし）
 			const meOrFolloweeIds = [me.id, ...followees.map(f => f.followeeId)];
-			query
-				.andWhere('note.channelId IS NULL')
-				.andWhere('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds });
-		} else if (followingChannels.length > 0) {
+			query.andWhere(new Brackets(qb => {
+				qb
+					.andWhere('note.channelId IS NULL')
+					.andWhere('note.userId IN (:...meOrFolloweeIds)', { meOrFolloweeIds: meOrFolloweeIds });
+				if (mutingChannelIds.length > 0) {
+					qb.andWhere('note.renoteChannelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+				}
+			}));
+		} else if (followingChannelIds.length > 0) {
 			// チャンネルフォローのみ（ユーザーフォローなし）
-			const followingChannelIds = followingChannels.map(x => x.followeeId);
 			query.andWhere(new Brackets(qb => {
 				qb
+					// renoteChannelIdは見る必要が無い
+					// ・HTLに流れてくるチャンネル＝フォローしているチャンネル
+					// ・HTLにフォロー外のチャンネルが流れるのは、フォローしているユーザがそのチャンネル投稿をリノートした場合のみ
+					// つまり、ユーザフォローしてない前提のこのブロックでは見る必要が無い
 					.where('note.channelId IN (:...followingChannelIds)', { followingChannelIds })
 					.orWhere('note.userId = :meId', { meId: me.id });
 			}));
 		} else {
 			// フォローなし
-			query
-				.andWhere('note.channelId IS NULL')
-				.andWhere('note.userId = :meId', { meId: me.id });
+			query.andWhere(new Brackets(qb => {
+				qb
+					.andWhere('note.channelId IS NULL')
+					.andWhere('note.userId = :meId', { meId: me.id });
+			}));
 		}
 
 		query.andWhere(new Brackets(qb => {
diff --git a/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts b/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts
index 42e80c6ae1..c0c8653f7b 100644
--- a/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/user-list-timeline.ts
@@ -14,6 +14,7 @@ import { IdService } from '@/core/IdService.js';
 import { QueryService } from '@/core/QueryService.js';
 import { MiLocalUser } from '@/models/User.js';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -84,6 +85,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private idService: IdService,
 		private fanoutTimelineEndpointService: FanoutTimelineEndpointService,
 		private queryService: QueryService,
+		private channelMutingService: ChannelMutingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -187,6 +189,17 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		this.queryService.generateBaseNoteFilteringQuery(query, me);
 		this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
 
+		// -- ミュートされたチャンネルのリノート対策
+		const mutedChannelIds = await this.channelMutingService
+			.list({ requestUserId: me.id }, { idOnly: true })
+			.then(x => x.map(x => x.id));
+		if (mutedChannelIds.length > 0) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteChannelId IS NULL')
+					.orWhere('note.renoteChannelId NOT IN (:...mutedChannelIds)', { mutedChannelIds });
+			}));
+		}
+
 		if (ps.includeMyRenotes === false) {
 			query.andWhere(new Brackets(qb => {
 				qb.orWhere('note.userId != :meId', { meId: me.id });
diff --git a/packages/backend/src/server/api/endpoints/roles/notes.ts b/packages/backend/src/server/api/endpoints/roles/notes.ts
index e8a760e9f8..4515c016a8 100644
--- a/packages/backend/src/server/api/endpoints/roles/notes.ts
+++ b/packages/backend/src/server/api/endpoints/roles/notes.ts
@@ -5,6 +5,7 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import * as Redis from 'ioredis';
+import { Brackets } from 'typeorm';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import type { NotesRepository, RolesRepository } from '@/models/_.js';
 import { QueryService } from '@/core/QueryService.js';
@@ -12,6 +13,7 @@ import { DI } from '@/di-symbols.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { IdService } from '@/core/IdService.js';
 import { FanoutTimelineService } from '@/core/FanoutTimelineService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -68,6 +70,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private noteEntityService: NoteEntityService,
 		private queryService: QueryService,
 		private fanoutTimelineService: FanoutTimelineService,
+		private channelMutingService: ChannelMutingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -101,6 +104,21 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				.leftJoinAndSelect('reply.user', 'replyUser')
 				.leftJoinAndSelect('renote.user', 'renoteUser');
 
+			// -- ミュートされたチャンネル対策
+			const mutingChannelIds = await this.channelMutingService
+				.list({ requestUserId: me.id }, { idOnly: true })
+				.then(x => x.map(x => x.id));
+			if (mutingChannelIds.length > 0) {
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.channelId IS NULL');
+					qb.orWhere('note.channelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+				}));
+				query.andWhere(new Brackets(qb => {
+					qb.orWhere('note.renoteChannelId IS NULL');
+					qb.orWhere('note.renoteChannelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+				}));
+			}
+
 			this.queryService.generateVisibilityQuery(query, me);
 			this.queryService.generateBaseNoteFilteringQuery(query, me);
 
diff --git a/packages/backend/src/server/api/endpoints/users/notes.ts b/packages/backend/src/server/api/endpoints/users/notes.ts
index 5832790a61..b9710250cf 100644
--- a/packages/backend/src/server/api/endpoints/users/notes.ts
+++ b/packages/backend/src/server/api/endpoints/users/notes.ts
@@ -16,6 +16,7 @@ import { MiLocalUser } from '@/models/User.js';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
 import { FanoutTimelineName } from '@/core/FanoutTimelineService.js';
 import { ApiError } from '@/server/api/error.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 
 export const meta = {
 	tags: ['users', 'notes'],
@@ -77,12 +78,12 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
-
 		private noteEntityService: NoteEntityService,
 		private queryService: QueryService,
 		private cacheService: CacheService,
 		private idService: IdService,
 		private fanoutTimelineEndpointService: FanoutTimelineEndpointService,
+		private channelMutingService: ChannelMutingService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -165,6 +166,11 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		withFiles: boolean,
 		withRenotes: boolean,
 	}, me: MiLocalUser | null) {
+		const mutingChannelIds = me
+			? await this.channelMutingService
+				.list({ requestUserId: me.id }, { idOnly: true })
+				.then(x => x.map(x => x.id))
+			: [];
 		const isSelf = me && (me.id === ps.userId);
 
 		const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'), ps.sinceId, ps.untilId)
@@ -177,14 +183,30 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			.leftJoinAndSelect('renote.user', 'renoteUser');
 
 		if (ps.withChannelNotes) {
-			if (!isSelf) query.andWhere(new Brackets(qb => {
-				qb.orWhere('note.channelId IS NULL');
-				qb.orWhere('channel.isSensitive = false');
+			query.andWhere(new Brackets(qb => {
+				if (mutingChannelIds.length > 0) {
+					qb.andWhere('note.channelId NOT IN (:...mutingChannelIds)', { mutingChannelIds: mutingChannelIds });
+				}
+
+				if (!isSelf) {
+					qb.andWhere(new Brackets(qb2 => {
+						qb2.orWhere('note.channelId IS NULL');
+						qb2.orWhere('channel.isSensitive = false');
+					}));
+				}
 			}));
 		} else {
 			query.andWhere('note.channelId IS NULL');
 		}
 
+		// -- ミュートされたチャンネルのリノート対策
+		if (mutingChannelIds.length > 0) {
+			query.andWhere(new Brackets(qb => {
+				qb.orWhere('note.renoteChannelId IS NULL');
+				qb.orWhere('note.renoteChannelId NOT IN (:...mutingChannelIds)', { mutingChannelIds });
+			}));
+		}
+
 		this.queryService.generateVisibilityQuery(query, me);
 		this.queryService.generateBaseNoteFilteringQuery(query, me, {
 			excludeAuthor: true,
diff --git a/packages/backend/src/server/api/stream/Connection.ts b/packages/backend/src/server/api/stream/Connection.ts
index 8e28ab263b..222086c960 100644
--- a/packages/backend/src/server/api/stream/Connection.ts
+++ b/packages/backend/src/server/api/stream/Connection.ts
@@ -11,8 +11,9 @@ import type { NotificationService } from '@/core/NotificationService.js';
 import { bindThis } from '@/decorators.js';
 import { CacheService } from '@/core/CacheService.js';
 import { MiFollowing, MiUserProfile } from '@/models/_.js';
-import type { StreamEventEmitter, GlobalEvents } from '@/core/GlobalEventService.js';
+import type { GlobalEvents, StreamEventEmitter } from '@/core/GlobalEventService.js';
 import { ChannelFollowingService } from '@/core/ChannelFollowingService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
 import { isJsonObject } from '@/misc/json-value.js';
 import type { JsonObject, JsonValue } from '@/misc/json-value.js';
 import type { ChannelsService } from './ChannelsService.js';
@@ -35,6 +36,7 @@ export default class Connection {
 	public userProfile: MiUserProfile | null = null;
 	public following: Record<string, Pick<MiFollowing, 'withReplies'> | undefined> = {};
 	public followingChannels: Set<string> = new Set();
+	public mutingChannels: Set<string> = new Set();
 	public userIdsWhoMeMuting: Set<string> = new Set();
 	public userIdsWhoBlockingMe: Set<string> = new Set();
 	public userIdsWhoMeMutingRenotes: Set<string> = new Set();
@@ -46,7 +48,7 @@ export default class Connection {
 		private notificationService: NotificationService,
 		private cacheService: CacheService,
 		private channelFollowingService: ChannelFollowingService,
-
+		private channelMutingService: ChannelMutingService,
 		user: MiUser | null | undefined,
 		token: MiAccessToken | null | undefined,
 	) {
@@ -57,10 +59,19 @@ export default class Connection {
 	@bindThis
 	public async fetch() {
 		if (this.user == null) return;
-		const [userProfile, following, followingChannels, userIdsWhoMeMuting, userIdsWhoBlockingMe, userIdsWhoMeMutingRenotes] = await Promise.all([
+		const [
+			userProfile,
+			following,
+			followingChannels,
+			mutingChannels,
+			userIdsWhoMeMuting,
+			userIdsWhoBlockingMe,
+			userIdsWhoMeMutingRenotes,
+		] = await Promise.all([
 			this.cacheService.userProfileCache.fetch(this.user.id),
 			this.cacheService.userFollowingsCache.fetch(this.user.id),
 			this.channelFollowingService.userFollowingChannelsCache.fetch(this.user.id),
+			this.channelMutingService.mutingChannelsCache.fetch(this.user.id),
 			this.cacheService.userMutingsCache.fetch(this.user.id),
 			this.cacheService.userBlockedCache.fetch(this.user.id),
 			this.cacheService.renoteMutingsCache.fetch(this.user.id),
@@ -68,6 +79,7 @@ export default class Connection {
 		this.userProfile = userProfile;
 		this.following = following;
 		this.followingChannels = followingChannels;
+		this.mutingChannels = mutingChannels;
 		this.userIdsWhoMeMuting = userIdsWhoMeMuting;
 		this.userIdsWhoBlockingMe = userIdsWhoBlockingMe;
 		this.userIdsWhoMeMutingRenotes = userIdsWhoMeMutingRenotes;
diff --git a/packages/backend/src/server/api/stream/channel.ts b/packages/backend/src/server/api/stream/channel.ts
index 686aea423c..465ed4238c 100644
--- a/packages/backend/src/server/api/stream/channel.ts
+++ b/packages/backend/src/server/api/stream/channel.ts
@@ -6,7 +6,8 @@
 import { bindThis } from '@/decorators.js';
 import { isInstanceMuted } from '@/misc/is-instance-muted.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
-import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
+import { isQuotePacked, isRenotePacked } from '@/misc/is-renote.js';
+import { isChannelRelated } from '@/misc/is-channel-related.js';
 import type { Packed } from '@/misc/json-schema.js';
 import type { JsonObject, JsonValue } from '@/misc/json-value.js';
 import type Connection from './Connection.js';
@@ -55,6 +56,10 @@ export default abstract class Channel {
 		return this.connection.followingChannels;
 	}
 
+	protected get mutingChannels() {
+		return this.connection.mutingChannels;
+	}
+
 	protected get subscriber() {
 		return this.connection.subscriber;
 	}
@@ -74,6 +79,9 @@ export default abstract class Channel {
 		// 流れてきたNoteがリノートをミュートしてるユーザが行ったもの
 		if (isRenotePacked(note) && !isQuotePacked(note) && this.userIdsWhoMeMutingRenotes.has(note.user.id)) return true;
 
+		// 流れてきたNoteがミュートしているチャンネルと関わる
+		if (isChannelRelated(note, this.mutingChannels)) return true;
+
 		return false;
 	}
 
diff --git a/packages/backend/src/server/api/stream/channels/channel.ts b/packages/backend/src/server/api/stream/channels/channel.ts
index ac79c31854..9a0da5b66b 100644
--- a/packages/backend/src/server/api/stream/channels/channel.ts
+++ b/packages/backend/src/server/api/stream/channels/channel.ts
@@ -8,6 +8,8 @@ import type { Packed } from '@/misc/json-schema.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { bindThis } from '@/decorators.js';
 import { isRenotePacked, isQuotePacked } from '@/misc/is-renote.js';
+import { isInstanceMuted } from '@/misc/is-instance-muted.js';
+import { isUserRelated } from '@/misc/is-user-related.js';
 import type { JsonObject } from '@/misc/json-value.js';
 import Channel, { type MiChannelService } from '../channel.js';
 
@@ -19,7 +21,6 @@ class ChannelChannel extends Channel {
 
 	constructor(
 		private noteEntityService: NoteEntityService,
-
 		id: string,
 		connection: Channel['connection'],
 	) {
@@ -52,6 +53,35 @@ class ChannelChannel extends Channel {
 		this.send('note', note);
 	}
 
+	/*
+	 * ミュートとブロックされてるを処理する
+	 */
+	protected override isNoteMutedOrBlocked(note: Packed<'Note'>): boolean {
+		// 流れてきたNoteがインスタンスミュートしたインスタンスが関わる
+		if (isInstanceMuted(note, new Set<string>(this.userProfile?.mutedInstances ?? []))) return true;
+
+		// 流れてきたNoteがミュートしているユーザーが関わる
+		if (isUserRelated(note, this.userIdsWhoMeMuting)) return true;
+		// 流れてきたNoteがブロックされているユーザーが関わる
+		if (isUserRelated(note, this.userIdsWhoBlockingMe)) return true;
+
+		// 流れてきたNoteがリノートをミュートしてるユーザが行ったもの
+		if (isRenotePacked(note) && !isQuotePacked(note) && this.userIdsWhoMeMutingRenotes.has(note.user.id)) return true;
+
+		// このソケットで見ているチャンネルがミュートされていたとしても、チャンネルを直接見ている以上は流すようにしたい
+		// ただし、他のミュートしているチャンネルは流さないようにもしたい
+		// ノート自体のチャンネルIDはonNoteでチェックしているので、ここではリノートのチャンネルIDをチェックする
+		if (
+			(note.renote) &&
+			(note.renote.channelId !== this.channelId) &&
+			(note.renote.channelId && this.mutingChannels.has(note.renote.channelId))
+		) {
+			return true;
+		}
+
+		return false;
+	}
+
 	@bindThis
 	public dispose() {
 		// Unsubscribe events
diff --git a/packages/backend/src/server/api/stream/channels/home-timeline.ts b/packages/backend/src/server/api/stream/channels/home-timeline.ts
index 157d9fc279..eb5b4a8c6c 100644
--- a/packages/backend/src/server/api/stream/channels/home-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/home-timeline.ts
@@ -44,7 +44,10 @@ class HomeTimelineChannel extends Channel {
 		if (this.withFiles && (note.fileIds == null || note.fileIds.length === 0)) return;
 
 		if (note.channelId) {
-			if (!this.followingChannels.has(note.channelId)) return;
+			// そのチャンネルをフォローしていない
+			if (!this.followingChannels.has(note.channelId)) {
+				return;
+			}
 		} else {
 			// その投稿のユーザーをフォローしていなかったら弾く
 			if (!isMe && !Object.hasOwn(this.following, note.userId)) return;
diff --git a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
index db5b4576be..2155e02012 100644
--- a/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/stream/channels/hybrid-timeline.ts
@@ -53,16 +53,25 @@ class HybridTimelineChannel extends Channel {
 
 		if (this.withFiles && (note.fileIds == null || note.fileIds.length === 0)) return;
 
-		// チャンネルの投稿ではなく、自分自身の投稿 または
-		// チャンネルの投稿ではなく、その投稿のユーザーをフォローしている または
-		// チャンネルの投稿ではなく、全体公開のローカルの投稿 または
-		// フォローしているチャンネルの投稿 の場合だけ
-		if (!(
-			(note.channelId == null && isMe) ||
-			(note.channelId == null && Object.hasOwn(this.following, note.userId)) ||
-			(note.channelId == null && (note.user.host == null && note.visibility === 'public')) ||
-			(note.channelId != null && this.followingChannels.has(note.channelId))
-		)) return;
+		if (!note.channelId) {
+			// 以下の条件に該当するノートのみ後続処理に通す（ので、以下のif文は該当しないノートをすべて弾くようにする）
+			// - 自分自身の投稿
+			// - その投稿のユーザーをフォローしている
+			// - 全体公開のローカルの投稿
+			if (!(
+				isMe ||
+				Object.hasOwn(this.following, note.userId) ||
+				(note.user.host == null && note.visibility === 'public')
+			)) {
+				return;
+			}
+		} else {
+			// 以下の条件に該当するノートのみ後続処理に通す（ので、以下のif文は該当しないノートをすべて弾くようにする）
+			// - フォローしているチャンネルの投稿
+			if (!this.followingChannels.has(note.channelId)) {
+				return;
+			}
+		}
 
 		if (note.visibility === 'followers') {
 			if (!isMe && !Object.hasOwn(this.following, note.userId)) return;
diff --git a/packages/backend/test/e2e/antennas.ts b/packages/backend/test/e2e/antennas.ts
index 1bbacd065b..70a5c9579e 100644
--- a/packages/backend/test/e2e/antennas.ts
+++ b/packages/backend/test/e2e/antennas.ts
@@ -69,6 +69,9 @@ describe('アンテナ', () => {
 	let userMutingAlice: User;
 	let userMutedByAlice: User;
 
+	let testChannel: misskey.entities.Channel;
+	let testMutedChannel: misskey.entities.Channel;
+
 	beforeAll(async () => {
 		root = await signup({ username: 'root' });
 		alice = await signup({ username: 'alice' });
@@ -120,6 +123,10 @@ describe('アンテナ', () => {
 		userMutedByAlice = await signup({ username: 'userMutedByAlice' });
 		await post(userMutedByAlice, { text: 'test' });
 		await api('mute/create', { userId: userMutedByAlice.id }, alice);
+
+		testChannel = (await api('channels/create', { name: 'test' }, root)).body;
+		testMutedChannel = (await api('channels/create', { name: 'test-muted' }, root)).body;
+		await api('channels/mute/create', { channelId: testMutedChannel.id }, alice);
 	}, 1000 * 60 * 10);
 
 	beforeEach(async () => {
@@ -605,6 +612,20 @@ describe('アンテナ', () => {
 					{ note: (): Promise<Note> => post(bob, { text: `${keyword}` }), included: true },
 				],
 			},
+			{
+				label: 'チャンネルノートも含む',
+				parameters: () => ({ src: 'all' }),
+				posts: [
+					{ note: (): Promise<Note> => post(bob, { text: `test ${keyword}`, channelId: testChannel.id }), included: true },
+				],
+			},
+			{
+				label: 'ミュートしてるチャンネルは含まない',
+				parameters: () => ({ src: 'all' }),
+				posts: [
+					{ note: (): Promise<Note> => post(bob, { text: `test ${keyword}`, channelId: testMutedChannel.id }) },
+				],
+			},
 		])('が取得できること（$label）', async ({ parameters, posts }) => {
 			const antenna = await successfulApiCall({
 				endpoint: 'antennas/create',
diff --git a/packages/backend/test/e2e/timelines.ts b/packages/backend/test/e2e/timelines.ts
index 4f7d1a4d69..4fd826100d 100644
--- a/packages/backend/test/e2e/timelines.ts
+++ b/packages/backend/test/e2e/timelines.ts
@@ -3,14 +3,17 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
 // How to run:
 // pnpm jest -- e2e/timelines.ts
 
 import * as assert from 'assert';
 import { setTimeout } from 'node:timers/promises';
+import { entities } from 'misskey-js';
 import { Redis } from 'ioredis';
-import { SignupResponse, Note, UserList } from 'misskey-js/entities.js';
-import { api, post, randomString, sendEnvUpdateRequest, signup, uploadUrl } from '../utils.js';
+import { SignupResponse, Note } from 'misskey-js/entities.js';
+import { api, initTestDb, post, randomString, sendEnvUpdateRequest, signup, uploadUrl, UserToken } from '../utils.js';
 import { loadConfig } from '@/config.js';
 
 function genHost() {
@@ -20,12 +23,72 @@ function genHost() {
 let redisForTimelines: Redis;
 let root: SignupResponse;
 
+async function renote(noteId: string, user: UserToken): Promise<entities.Note> {
+	return await api('notes/create', { renoteId: noteId }, user).then(it => it.body.createdNote);
+}
+
+async function createChannel(name: string, user: UserToken): Promise<entities.ChannelsCreateResponse> {
+	return (await api('channels/create', { name }, user)).body;
+}
+
+async function followChannel(channelId: string, user: UserToken) {
+	return await api('channels/follow', { channelId }, user);
+}
+
+async function muteChannel(channelId: string, user: UserToken) {
+	await api('channels/mute/create', { channelId }, user);
+}
+
+async function createList(name: string, user: UserToken): Promise<entities.UsersListsCreateResponse> {
+	return (await api('users/lists/create', { name }, user)).body;
+}
+
+async function pushList(listId: string, pushUserIds: string[] = [], user: UserToken) {
+	for (const userId of pushUserIds) {
+		await api('users/lists/push', { listId, userId }, user);
+	}
+	await setTimeout(500);
+}
+
+async function createRole(name: string, user: UserToken): Promise<entities.AdminRolesCreateResponse> {
+	return (await api('admin/roles/create', {
+		name,
+		description: '',
+		color: '#000000',
+		iconUrl: '',
+		target: 'manual',
+		condFormula: {},
+		isPublic: true,
+		isModerator: false,
+		isAdministrator: false,
+		isExplorable: true,
+		asBadge: false,
+		canEditMembersByModerator: false,
+		displayOrder: 0,
+		policies: {},
+	}, user)).body;
+}
+
+async function assignRole(roleId: string, userId: string, user: UserToken) {
+	await api('admin/roles/assign', { userId, roleId }, user);
+}
+
 describe('Timelines', () => {
+	let root: UserToken;
+
 	beforeAll(async () => {
 		redisForTimelines = new Redis(loadConfig().redisForTimelines);
 		root = await signup({ username: 'root' });
 	}, 1000 * 60 * 2);
 
+	// afterEach(async () => {
+	// 	// テスト中に作ったノートをきれいにする。
+	// 	// ユーザも作っているが、時間差で動く通知系処理などがあり、このタイミングで消すとエラー落ちするので消さない（ノートさえ消えていれば支障はない）
+	// 	const db = await initTestDb(true);
+	// 	await db.query('DELETE FROM "note"');
+	// 	await db.query('DELETE FROM "channel"');
+	// });
+
 	describe.each([
 		{ enableFanoutTimeline: true },
 		{ enableFanoutTimeline: false },
@@ -611,6 +674,280 @@ describe('Timelines', () => {
 				assert.strictEqual(res.body.some(note => note.id === bobNote.id), false);
 			});
 
+			describe('Channel', () => {
+				test('チャンネル未フォロー　＋　ユーザ未フォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザ未フォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザフォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザ未フォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザ未フォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+			});
+
 			test('FTT: ローカルユーザーの HTL にはプッシュされる', async () => {
 				const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
 
@@ -1012,41 +1349,277 @@ describe('Timelines', () => {
 				assert.strictEqual(res.body.some(note => note.id === bobNote2.id), true);
 			}, 1000 * 10);
 
-			describe('凍結', () => {
-				let alice: SignupResponse, bob: SignupResponse, carol: SignupResponse;
-				let aliceNote: Note, bobNote: Note, carolNote: Note;
+			describe('Channel', () => {
+				test('チャンネル未フォロー　＋　ユーザ未フォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
 
-				beforeAll(async () => {
-					[alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+					const channel = await createChannel('channel', bob);
 
-					aliceNote = await post(alice, { text: 'hi' });
-					bobNote = await post(bob, { text: 'yo' });
-					carolNote = await post(carol, { text: 'kon\'nichiwa' });
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
 
 					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
 				});
 
-				test('凍結後に凍結されたユーザーのノートは見えなくなる', async () => {
-					await api('admin/suspend-user', { userId: carol.id }, root);
-					await setTimeout(100);
+				test('チャンネルフォロー　＋　ユーザ未フォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
 
 					const res = await api('notes/local-timeline', { limit: 100 }, alice);
 
-					assert.strictEqual(res.body.some(note => note.id === aliceNote.id), true);
-					assert.strictEqual(res.body.some(note => note.id === bobNote.id), true);
-					assert.strictEqual(res.body.some(note => note.id === carolNote.id), false);
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
 				});
 
-				test('凍結解除後に凍結されていたユーザーのノートは見えるようになる', async () => {
-					await api('admin/unsuspend-user', { userId: carol.id }, root);
-					await setTimeout(100);
+				test('チャンネル未フォロー　＋　ユーザフォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
 
 					const res = await api('notes/local-timeline', { limit: 100 }, alice);
 
-					assert.strictEqual(res.body.some(note => note.id === aliceNote.id), true);
-					assert.strictEqual(res.body.some(note => note.id === bobNote.id), true);
-					assert.strictEqual(res.body.some(note => note.id === carolNote.id), true);
-					assert.strictEqual(res.body.find(note => note.id === carolNote.id)?.text, 'kon\'nichiwa');
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザフォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザ未フォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザ未フォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/local-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
 				});
 			});
 		});
@@ -1091,7 +1664,8 @@ describe('Timelines', () => {
 			});
 
 			test('withReplies: false でフォローしているユーザーからの自分への返信が含まれる', async () => {
-				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */ if (!enableFanoutTimeline) return;
+				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */
+				if (!enableFanoutTimeline) return;
 
 				const [alice, bob] = await Promise.all([signup(), signup()]);
 
@@ -1127,7 +1701,8 @@ describe('Timelines', () => {
 			});
 
 			test('withReplies: true でフォローしているユーザーの行った別のフォローしているユーザーの visibility: followers な投稿への返信が含まれる', async () => {
-				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */ if (!enableFanoutTimeline) return;
+				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */
+				if (!enableFanoutTimeline) return;
 
 				const [alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
 
@@ -1149,7 +1724,8 @@ describe('Timelines', () => {
 			});
 
 			test('withReplies: true でフォローしているユーザーの自分の visibility: followers な投稿への返信が含まれる', async () => {
-				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */ if (!enableFanoutTimeline) return;
+				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */
+				if (!enableFanoutTimeline) return;
 
 				const [alice, bob] = await Promise.all([signup(), signup()]);
 
@@ -1225,7 +1801,8 @@ describe('Timelines', () => {
 			});
 
 			test('withReplies: false でフォローしていないユーザーからの自分への返信が含まれる', async () => {
-				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */ if (!enableFanoutTimeline) return;
+				/* FIXME: https://github.com/misskey-dev/misskey/issues/12065 */
+				if (!enableFanoutTimeline) return;
 
 				const [alice, bob] = await Promise.all([signup(), signup()]);
 
@@ -1269,6 +1846,280 @@ describe('Timelines', () => {
 				assert.strictEqual(res.body.some(note => note.id === bobNote2.id), true);
 			}, 1000 * 10);
 
+			describe('Channel', () => {
+				test('チャンネル未フォロー　＋　ユーザ未フォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザ未フォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザフォロー　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネル未フォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザ未フォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザ未フォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザフォロー　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザ未フォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　ユーザフォロー　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+					await api('following/create', { userId: bob.id }, alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/hybrid-timeline', { limit: 100 }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+			});
+
 			describe('凍結', () => {
 				/*
 				 * bob = 未フォローのローカルユーザー (凍結対象でない)
@@ -1607,45 +2458,309 @@ describe('Timelines', () => {
 				assert.strictEqual(res.body.some(note => note.id === bobNote.id), false);
 			});
 
-			describe('凍結', () => {
-				let alice: SignupResponse, bob: SignupResponse, carol: SignupResponse;
-				let aliceNote: Note, bobNote: Note, carolNote: Note;
-				let list: UserList;
+			describe('Channel', () => {
+				test('チャンネル未フォロー　＋　リスインしてない　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
 
-				beforeAll(async () => {
-					[alice, bob, carol] = await Promise.all([signup(), signup(), signup()]);
+					const list = await createList('list', alice);
 
-					list = await api('users/lists/create', { name: 'list' }, alice).then(res => res.body);
+					const channel = await createChannel('channel', bob);
 
-					await api('users/lists/push', { listId: list.id, userId: bob.id }, alice);
-					await api('users/lists/push', { listId: list.id, userId: carol.id }, alice);
-					aliceNote = await post(alice, { text: 'hi' });
-					bobNote = await post(bob, { text: 'yo' });
-					carolNote = await post(carol, { text: 'kon\'nichiwa' });
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
 
 					await waitForPushToTl();
 
-					await api('admin/suspend-user', { userId: carol.id }, root);
-					await setTimeout(100);
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
 				});
 
-				test('凍結後に凍結されたユーザーのノートは見えなくなる', async () => {
-					const res = await api('notes/user-list-timeline', { listId: list.id }, alice);
+				test('チャンネルフォロー　＋　リスインしてない　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
 
-					assert.strictEqual(res.body.some(note => note.id === aliceNote.id), false);
-					assert.strictEqual(res.body.some(note => note.id === bobNote.id), true);
-					assert.strictEqual(res.body.some(note => note.id === carolNote.id), false);
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
 				});
 
-				test('凍結解除後に凍結されていたユーザーのノートは見えるようになる', async () => {
-					await api('admin/unsuspend-user', { userId: carol.id }, root);
-					await setTimeout(100);
+				test('チャンネル未フォロー　＋　リスインしてる　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
 
-					const res = await api('notes/user-list-timeline', { listId: list.id }, alice);
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
 
-					assert.strictEqual(res.body.some(note => note.id === aliceNote.id), false);
-					assert.strictEqual(res.body.some(note => note.id === bobNote.id), true);
-					assert.strictEqual(res.body.some(note => note.id === carolNote.id), true);
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　リスインしてる　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネル未フォロー　＋　リスインしてない　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　リスインしてない　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネル未フォロー　＋　リスインしてる　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('チャンネルフォロー　＋　リスインしてる　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　リスインしてない　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　リスインしてない　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　リスインしてる　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　リスインしてる　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　リスインしてない　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　リスインしてない　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネル未フォロー　＋　リスインしてる　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルフォロー　＋　リスインしてる　＋　チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const list = await createList('list', alice);
+					await pushList(list.id, [bob.id], alice);
+
+					const channel = await createChannel('channel', bob);
+					await followChannel(channel.id, alice);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('notes/user-list-timeline', { limit: 100, listId: list.id }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
 				});
 			});
 		});
@@ -1937,8 +3052,276 @@ describe('Timelines', () => {
 				const res = await api('users/notes', { userId: alice.id, sinceId: noteSince.id, untilId: noteUntil.id });
 				assert.deepStrictEqual(res.body, [note3, note2, note1]);
 			});
+
+			describe('Channel', () => {
+				test('チャンネルミュートなし　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('users/notes', { userId: bob.id, withChannelNotes: true }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+				});
+
+				test('チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+					await waitForPushToTl();
+
+					const res = await api('users/notes', { userId: bob.id, withChannelNotes: true }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+				});
+
+				test('[チャンネル外リノート] チャンネルミュートなし　＝　TLに流れる', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('users/notes', { userId: bob.id, withChannelNotes: true }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+				});
+
+				test('[チャンネル外リノート] チャンネルミュート　＝　TLに流れない', async () => {
+					const [alice, bob] = await Promise.all([signup(), signup()]);
+
+					const channel = await createChannel('channel', bob);
+					await muteChannel(channel.id, alice);
+
+					const aliceNote = await post(alice, { text: 'hi' });
+					const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+					const bobRenote = await renote(bobNote.id, bob);
+
+					await waitForPushToTl();
+
+					const res = await api('users/notes', { userId: bob.id, withChannelNotes: true }, alice);
+
+					assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+				});
+			});
 		});
 
+		describe('Channel TL', () => {
+			test('閲覧中チャンネルのノートが含まれる', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), false);
+				assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+			});
+
+			test('閲覧中チャンネルとは別チャンネルのノートは含まれない', async() => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+				const channel2 = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel2.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), false);
+				assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+			});
+
+			test('閲覧中チャンネルのノートにリノートが含まれる', async() => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+				const bobRenote = await post(bob, { channelId: channel.id, renoteId: bobNote.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+			});
+
+			test('閲覧中チャンネルとは別チャンネルからのリノートが含まれる', async() => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+				const channel2 = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel2.id });
+				const bobRenote = await post(bob, { channelId: channel.id, renoteId: bobNote.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+			});
+
+			test('閲覧中チャンネルに自分の他人への返信が含まれる', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+				const aliceNote = await post(alice, { text: 'hi', replyId: bobNote.id, channelId: channel.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), true);
+			});
+
+			test('閲覧中チャンネルに他人の自分への返信が含まれる', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi', channelId: channel.id });
+				const bobNote = await post(bob, { text: 'ok', replyId: aliceNote.id, channelId: channel.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+			});
+
+			test('閲覧中チャンネルにミュートしているユーザのノートは含まれない', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				await api('mute/create', { userId: bob.id }, alice);
+
+				const channel = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), false);
+				assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+			});
+
+			test('閲覧中チャンネルにこちらをブロックしているユーザのノートは含まれない', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				await api('blocking/create', { userId: alice.id }, bob);
+
+				const channel = await createChannel('channel', bob);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), false);
+				assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), false);
+			});
+
+			test('閲覧中チャンネルをミュートしていてもノートが含まれる', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+				await muteChannel(channel.id, alice);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === aliceNote.id), false);
+				assert.strictEqual(res.body.some((note: any) => note.id === bobNote.id), true);
+			});
+
+			test('閲覧中チャンネルをミュートしていても、同チャンネルのリノートが含まれる', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+				await muteChannel(channel.id, alice);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+				const bobRenote = await post(bob, { channelId: channel.id, renoteId: bobNote.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+			});
+
+			test('閲覧中チャンネルをミュートしていても、同チャンネルのリプライが含まれる', async () => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+				await muteChannel(channel.id, alice);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel.id });
+				const bobRenote = await post(bob, { channelId: channel.id, replyId: bobNote.id, text: 'ho' });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), true);
+			});
+
+			test('閲覧中チャンネルとは別チャンネルをミュートしているとき、そのチャンネルからのリノートは含まれない', async() => {
+				const [alice, bob] = await Promise.all([signup(), signup()]);
+
+				const channel = await createChannel('channel', bob);
+				const channel2 = await createChannel('channel', bob);
+				await muteChannel(channel2.id, alice);
+
+				const aliceNote = await post(alice, { text: 'hi' });
+				const bobNote = await post(bob, { text: 'ok', channelId: channel2.id });
+				const bobRenote = await post(bob, { channelId: channel.id, renoteId: bobNote.id });
+
+				await waitForPushToTl();
+
+				const res = await api('channels/timeline', { channelId: channel.id }, alice);
+
+				assert.strictEqual(res.body.some((note: any) => note.id === bobRenote.id), false);
+			});
+		});
 		// TODO: リノートミュート済みユーザーのテスト
 		// TODO: ページネーションのテスト
 	});
diff --git a/packages/backend/test/jest.setup.unit.cjs b/packages/backend/test/jest.setup.unit.cjs
new file mode 100644
index 0000000000..dd879c81c8
--- /dev/null
+++ b/packages/backend/test/jest.setup.unit.cjs
@@ -0,0 +1,10 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+module.exports = async () => {
+	// DBはUTC（っぽい）ので、テスト側も合わせておく
+	process.env.TZ = 'UTC';
+	process.env.NODE_ENV = 'test';
+};
diff --git a/packages/backend/test/unit/ChannelFollowingService.ts b/packages/backend/test/unit/ChannelFollowingService.ts
new file mode 100644
index 0000000000..2d3196f2f4
--- /dev/null
+++ b/packages/backend/test/unit/ChannelFollowingService.ts
@@ -0,0 +1,235 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+/* eslint-disable */
+
+import { afterEach, beforeEach, describe, expect } from '@jest/globals';
+import { Test, TestingModule } from '@nestjs/testing';
+import { GlobalModule } from '@/GlobalModule.js';
+import { CoreModule } from '@/core/CoreModule.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { IdService } from '@/core/IdService.js';
+import {
+	type ChannelFollowingsRepository,
+	ChannelsRepository,
+	DriveFilesRepository,
+	MiChannel,
+	MiChannelFollowing,
+	MiDriveFile,
+	MiUser,
+	UserProfilesRepository,
+	UsersRepository,
+} from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { ChannelFollowingService } from "@/core/ChannelFollowingService.js";
+import { MiLocalUser } from "@/models/User.js";
+
+describe('ChannelFollowingService', () => {
+	let app: TestingModule;
+	let service: ChannelFollowingService;
+	let channelsRepository: ChannelsRepository;
+	let channelFollowingsRepository: ChannelFollowingsRepository;
+	let usersRepository: UsersRepository;
+	let userProfilesRepository: UserProfilesRepository;
+	let driveFilesRepository: DriveFilesRepository;
+	let idService: IdService;
+
+	let alice: MiLocalUser;
+	let bob: MiLocalUser;
+	let channel1: MiChannel;
+	let channel2: MiChannel;
+	let channel3: MiChannel;
+	let driveFile1: MiDriveFile;
+	let driveFile2: MiDriveFile;
+
+	async function createUser(data: Partial<MiUser> = {}) {
+		const user = await usersRepository
+			.insert({
+				id: idService.gen(),
+				username: 'username',
+				usernameLower: 'username',
+				...data,
+			})
+			.then(x => usersRepository.findOneByOrFail(x.identifiers[0]));
+
+		await userProfilesRepository.insert({
+			userId: user.id,
+		});
+
+		return user;
+	}
+
+	async function createChannel(data: Partial<MiChannel> = {}) {
+		return await channelsRepository
+			.insert({
+				id: idService.gen(),
+				...data,
+			})
+			.then(x => channelsRepository.findOneByOrFail(x.identifiers[0]));
+	}
+
+	async function createChannelFollowing(data: Partial<MiChannelFollowing> = {}) {
+		return await channelFollowingsRepository
+			.insert({
+				id: idService.gen(),
+				...data,
+			})
+			.then(x => channelFollowingsRepository.findOneByOrFail(x.identifiers[0]));
+	}
+
+	async function fetchChannelFollowing() {
+		return await channelFollowingsRepository.findBy({});
+	}
+
+	async function createDriveFile(data: Partial<MiDriveFile> = {}) {
+		return await driveFilesRepository
+			.insert({
+				id: idService.gen(),
+				md5: 'md5',
+				name: 'name',
+				size: 0,
+				type: 'type',
+				storedInternal: false,
+				url: 'url',
+				...data,
+			})
+			.then(x => driveFilesRepository.findOneByOrFail(x.identifiers[0]));
+	}
+
+	beforeAll(async () => {
+		app = await Test.createTestingModule({
+			imports: [
+				GlobalModule,
+				CoreModule,
+			],
+			providers: [
+				GlobalEventService,
+				IdService,
+				ChannelFollowingService,
+			],
+		}).compile();
+
+		app.enableShutdownHooks();
+
+		service = app.get<ChannelFollowingService>(ChannelFollowingService);
+		idService = app.get<IdService>(IdService);
+		channelsRepository = app.get<ChannelsRepository>(DI.channelsRepository);
+		channelFollowingsRepository = app.get<ChannelFollowingsRepository>(DI.channelFollowingsRepository);
+		usersRepository = app.get<UsersRepository>(DI.usersRepository);
+		userProfilesRepository = app.get<UserProfilesRepository>(DI.userProfilesRepository);
+		driveFilesRepository = app.get<DriveFilesRepository>(DI.driveFilesRepository);
+	});
+
+	afterAll(async () => {
+		await app.close();
+	});
+
+	beforeEach(async () => {
+		alice = { ...await createUser({ username: 'alice' }), host: null, uri: null };
+		bob = { ...await createUser({ username: 'bob' }), host: null, uri: null };
+		driveFile1 = await createDriveFile();
+		driveFile2 = await createDriveFile();
+		channel1 = await createChannel({ name: 'channel1', userId: alice.id, bannerId: driveFile1.id });
+		channel2 = await createChannel({ name: 'channel2', userId: alice.id, bannerId: driveFile2.id });
+		channel3 = await createChannel({ name: 'channel3', userId: alice.id, bannerId: driveFile2.id });
+	});
+
+	afterEach(async () => {
+		await channelFollowingsRepository.deleteAll();
+		await channelsRepository.deleteAll();
+		await userProfilesRepository.deleteAll();
+		await usersRepository.deleteAll();
+	});
+
+	describe('list', () => {
+		test('default', async () => {
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel1.id });
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel2.id });
+			await createChannelFollowing({ followerId: bob.id, followeeId: channel3.id });
+
+			const followings = await service.list({ requestUserId: alice.id });
+
+			expect(followings).toHaveLength(2);
+			expect(followings[0].id).toBe(channel1.id);
+			expect(followings[0].userId).toBe(alice.id);
+			expect(followings[0].user).toBeFalsy();
+			expect(followings[0].bannerId).toBe(driveFile1.id);
+			expect(followings[0].banner).toBeFalsy();
+			expect(followings[1].id).toBe(channel2.id);
+			expect(followings[1].userId).toBe(alice.id);
+			expect(followings[1].user).toBeFalsy();
+			expect(followings[1].bannerId).toBe(driveFile2.id);
+			expect(followings[1].banner).toBeFalsy();
+		});
+
+		test('idOnly', async () => {
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel1.id });
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel2.id });
+			await createChannelFollowing({ followerId: bob.id, followeeId: channel3.id });
+
+			const followings = await service.list({ requestUserId: alice.id }, { idOnly: true });
+
+			expect(followings).toHaveLength(2);
+			expect(followings[0].id).toBe(channel1.id);
+			expect(followings[1].id).toBe(channel2.id);
+		});
+
+		test('joinUser', async () => {
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel1.id });
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel2.id });
+			await createChannelFollowing({ followerId: bob.id, followeeId: channel3.id });
+
+			const followings = await service.list({ requestUserId: alice.id }, { joinUser: true });
+
+			expect(followings).toHaveLength(2);
+			expect(followings[0].id).toBe(channel1.id);
+			expect(followings[0].user).toEqual(alice);
+			expect(followings[0].banner).toBeFalsy();
+			expect(followings[1].id).toBe(channel2.id);
+			expect(followings[1].user).toEqual(alice);
+			expect(followings[1].banner).toBeFalsy();
+		});
+
+		test('joinBannerFile', async () => {
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel1.id });
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel2.id });
+			await createChannelFollowing({ followerId: bob.id, followeeId: channel3.id });
+
+			const followings = await service.list({ requestUserId: alice.id }, { joinBannerFile: true });
+
+			expect(followings).toHaveLength(2);
+			expect(followings[0].id).toBe(channel1.id);
+			expect(followings[0].user).toBeFalsy();
+			expect(followings[0].banner).toEqual(driveFile1);
+			expect(followings[1].id).toBe(channel2.id);
+			expect(followings[1].user).toBeFalsy();
+			expect(followings[1].banner).toEqual(driveFile2);
+		});
+	});
+
+	describe('follow', () => {
+		test('default', async () => {
+			await service.follow(alice, channel1);
+
+			const followings = await fetchChannelFollowing();
+
+			expect(followings).toHaveLength(1);
+			expect(followings[0].followeeId).toBe(channel1.id);
+			expect(followings[0].followerId).toBe(alice.id);
+		});
+	});
+
+	describe('unfollow', () => {
+		test('default', async () => {
+			await createChannelFollowing({ followerId: alice.id, followeeId: channel1.id });
+
+			await service.unfollow(alice, channel1);
+
+			const followings = await fetchChannelFollowing();
+
+			expect(followings).toHaveLength(0);
+		});
+	});
+});
diff --git a/packages/backend/test/unit/ChannelMutingService.ts b/packages/backend/test/unit/ChannelMutingService.ts
new file mode 100644
index 0000000000..6916701d1f
--- /dev/null
+++ b/packages/backend/test/unit/ChannelMutingService.ts
@@ -0,0 +1,336 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+/* eslint-disable */
+
+import { afterEach, beforeEach, describe, expect } from '@jest/globals';
+import { Test, TestingModule } from '@nestjs/testing';
+import { GlobalModule } from '@/GlobalModule.js';
+import { CoreModule } from '@/core/CoreModule.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { IdService } from '@/core/IdService.js';
+import { ChannelMutingService } from '@/core/ChannelMutingService.js';
+import {
+	ChannelMutingRepository,
+	ChannelsRepository,
+	DriveFilesRepository,
+	MiChannel,
+	MiChannelMuting,
+	MiDriveFile,
+	MiUser,
+	UserProfilesRepository,
+	UsersRepository,
+} from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { setTimeout } from 'node:timers/promises';
+
+describe('ChannelMutingService', () => {
+	let app: TestingModule;
+	let service: ChannelMutingService;
+	let channelsRepository: ChannelsRepository;
+	let channelMutingRepository: ChannelMutingRepository;
+	let usersRepository: UsersRepository;
+	let userProfilesRepository: UserProfilesRepository;
+	let driveFilesRepository: DriveFilesRepository;
+	let idService: IdService;
+
+	let alice: MiUser;
+	let bob: MiUser;
+	let channel1: MiChannel;
+	let channel2: MiChannel;
+	let channel3: MiChannel;
+	let driveFile1: MiDriveFile;
+	let driveFile2: MiDriveFile;
+
+	async function createUser(data: Partial<MiUser> = {}) {
+		const user = await usersRepository
+			.insert({
+				id: idService.gen(),
+				username: 'username',
+				usernameLower: 'username',
+				...data,
+			})
+			.then(x => usersRepository.findOneByOrFail(x.identifiers[0]));
+
+		await userProfilesRepository.insert({
+			userId: user.id,
+		});
+
+		return user;
+	}
+
+	async function createChannel(data: Partial<MiChannel> = {}) {
+		return await channelsRepository
+			.insert({
+				id: idService.gen(),
+				...data,
+			})
+			.then(x => channelsRepository.findOneByOrFail(x.identifiers[0]));
+	}
+
+	async function createChannelMuting(data: Partial<MiChannelMuting> = {}) {
+		return await channelMutingRepository
+			.insert({
+				id: idService.gen(),
+				...data,
+			})
+			.then(x => channelMutingRepository.findOneByOrFail(x.identifiers[0]));
+	}
+
+	async function fetchChannelMuting() {
+		return await channelMutingRepository.findBy({});
+	}
+
+	async function createDriveFile(data: Partial<MiDriveFile> = {}) {
+		return await driveFilesRepository
+			.insert({
+				id: idService.gen(),
+				md5: 'md5',
+				name: 'name',
+				size: 0,
+				type: 'type',
+				storedInternal: false,
+				url: 'url',
+				...data,
+			})
+			.then(x => driveFilesRepository.findOneByOrFail(x.identifiers[0]));
+	}
+
+	beforeAll(async () => {
+		app = await Test.createTestingModule({
+			imports: [
+				GlobalModule,
+				CoreModule,
+			],
+			providers: [
+				GlobalEventService,
+				IdService,
+				ChannelMutingService,
+			],
+		}).compile();
+
+		app.enableShutdownHooks();
+
+		service = app.get<ChannelMutingService>(ChannelMutingService);
+		idService = app.get<IdService>(IdService);
+		channelsRepository = app.get<ChannelsRepository>(DI.channelsRepository);
+		channelMutingRepository = app.get<ChannelMutingRepository>(DI.channelMutingRepository);
+		usersRepository = app.get<UsersRepository>(DI.usersRepository);
+		userProfilesRepository = app.get<UserProfilesRepository>(DI.userProfilesRepository);
+		driveFilesRepository = app.get<DriveFilesRepository>(DI.driveFilesRepository);
+	});
+
+	afterAll(async () => {
+		await app.close();
+	});
+
+	beforeEach(async () => {
+		alice = await createUser({ username: 'alice' });
+		bob = await createUser({ username: 'bob' });
+		driveFile1 = await createDriveFile();
+		driveFile2 = await createDriveFile();
+		channel1 = await createChannel({ name: 'channel1', userId: alice.id, bannerId: driveFile1.id });
+		channel2 = await createChannel({ name: 'channel2', userId: alice.id, bannerId: driveFile2.id });
+		channel3 = await createChannel({ name: 'channel3', userId: alice.id, bannerId: driveFile2.id });
+	});
+
+	afterEach(async () => {
+		await channelMutingRepository.deleteAll();
+		await channelsRepository.deleteAll();
+		await userProfilesRepository.deleteAll();
+		await usersRepository.deleteAll();
+	});
+
+	describe('list', () => {
+		test('default', async () => {
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id });
+			await createChannelMuting({ userId: bob.id, channelId: channel3.id });
+
+			const mutings = await service.list({ requestUserId: alice.id });
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].id).toBe(channel1.id);
+			expect(mutings[0].userId).toBe(alice.id);
+			expect(mutings[0].user).toBeFalsy();
+			expect(mutings[0].bannerId).toBe(driveFile1.id);
+			expect(mutings[0].banner).toBeFalsy();
+			expect(mutings[1].id).toBe(channel2.id);
+			expect(mutings[1].userId).toBe(alice.id);
+			expect(mutings[1].user).toBeFalsy();
+			expect(mutings[1].bannerId).toBe(driveFile2.id);
+			expect(mutings[1].banner).toBeFalsy();
+		});
+
+		test('withoutExpires', async () => {
+			const now = new Date();
+			const past = new Date(now);
+			const future = new Date(now);
+			past.setMinutes(past.getMinutes() - 1);
+			future.setMinutes(future.getMinutes() + 1);
+
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id, expiresAt: past });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id, expiresAt: null });
+			await createChannelMuting({ userId: alice.id, channelId: channel3.id, expiresAt: future });
+
+			const mutings = await service.list({ requestUserId: alice.id });
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].id).toBe(channel2.id);
+			expect(mutings[1].id).toBe(channel3.id);
+		});
+
+		test('idOnly', async () => {
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id });
+			await createChannelMuting({ userId: bob.id, channelId: channel3.id });
+
+			const mutings = await service.list({ requestUserId: alice.id }, { idOnly: true });
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].id).toBe(channel1.id);
+			expect(mutings[1].id).toBe(channel2.id);
+		});
+
+		test('withoutExpires-idOnly', async () => {
+			const now = new Date();
+			const past = new Date(now);
+			const future = new Date(now);
+			past.setMinutes(past.getMinutes() - 1);
+			future.setMinutes(future.getMinutes() + 1);
+
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id, expiresAt: past });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id, expiresAt: null });
+			await createChannelMuting({ userId: alice.id, channelId: channel3.id, expiresAt: future });
+
+			const mutings = await service.list({ requestUserId: alice.id }, { idOnly: true });
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].id).toBe(channel2.id);
+			expect(mutings[1].id).toBe(channel3.id);
+		});
+
+		test('joinUser', async () => {
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id });
+			await createChannelMuting({ userId: bob.id, channelId: channel3.id });
+
+			const mutings = await service.list({ requestUserId: alice.id }, { joinUser: true });
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].id).toBe(channel1.id);
+			expect(mutings[0].user).toEqual(alice);
+			expect(mutings[0].banner).toBeFalsy();
+			expect(mutings[1].id).toBe(channel2.id);
+			expect(mutings[1].user).toEqual(alice);
+			expect(mutings[1].banner).toBeFalsy();
+		});
+
+		test('joinBannerFile', async () => {
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id });
+			await createChannelMuting({ userId: bob.id, channelId: channel3.id });
+
+			const mutings = await service.list({ requestUserId: alice.id }, { joinBannerFile: true });
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].id).toBe(channel1.id);
+			expect(mutings[0].user).toBeFalsy();
+			expect(mutings[0].banner).toEqual(driveFile1);
+			expect(mutings[1].id).toBe(channel2.id);
+			expect(mutings[1].user).toBeFalsy();
+			expect(mutings[1].banner).toEqual(driveFile2);
+		});
+	});
+
+	describe('findExpiredMutings', () => {
+		test('default', async () => {
+			const now = new Date();
+			const future = new Date(now);
+			const past = new Date(now);
+			future.setMinutes(now.getMinutes() + 1);
+			past.setMinutes(now.getMinutes() - 1);
+
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id, expiresAt: past });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id, expiresAt: future });
+			await createChannelMuting({ userId: bob.id, channelId: channel3.id, expiresAt: past });
+
+			const mutings = await service.findExpiredMutings();
+
+			expect(mutings).toHaveLength(2);
+			expect(mutings[0].channelId).toBe(channel1.id);
+			expect(mutings[1].channelId).toBe(channel3.id);
+		});
+	});
+
+	describe('isMuted', () => {
+		test('isMuted: true', async () => {
+			// キャッシュを読むのでServiceの機能を使って登録し、キャッシュを作成する
+			await service.mute({ requestUserId: alice.id, targetChannelId: channel1.id });
+			await service.mute({ requestUserId: alice.id, targetChannelId: channel2.id });
+
+			await setTimeout(500);
+
+			const result = await service.isMuted({ requestUserId: alice.id, targetChannelId: channel1.id });
+
+			expect(result).toBe(true);
+		});
+
+		test('isMuted: false', async () => {
+			await service.mute({ requestUserId: alice.id, targetChannelId: channel2.id });
+
+			await setTimeout(500);
+
+			const result = await service.isMuted({ requestUserId: alice.id, targetChannelId: channel1.id });
+
+			expect(result).toBe(false);
+		});
+	});
+
+	describe('mute', () => {
+		test('default', async () => {
+			await service.mute({ requestUserId: alice.id, targetChannelId: channel1.id });
+
+			const muting = await fetchChannelMuting();
+			expect(muting).toHaveLength(1);
+			expect(muting[0].channelId).toBe(channel1.id);
+		});
+	});
+
+	describe('unmute', () => {
+		test('default', async () => {
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id });
+
+			let muting = await fetchChannelMuting();
+			expect(muting).toHaveLength(1);
+			expect(muting[0].channelId).toBe(channel1.id);
+
+			await service.unmute({ requestUserId: alice.id, targetChannelId: channel1.id });
+
+			muting = await fetchChannelMuting();
+			expect(muting).toHaveLength(0);
+		});
+	});
+
+	describe('eraseExpiredMutings', () => {
+		test('default', async () => {
+			const now = new Date();
+			const future = new Date(now);
+			const past = new Date(now);
+			future.setMinutes(now.getMinutes() + 1);
+			past.setMinutes(now.getMinutes() - 1);
+
+			await createChannelMuting({ userId: alice.id, channelId: channel1.id, expiresAt: past });
+			await createChannelMuting({ userId: alice.id, channelId: channel2.id, expiresAt: future });
+			await createChannelMuting({ userId: bob.id, channelId: channel3.id, expiresAt: past });
+
+			await service.eraseExpiredMutings();
+
+			const mutings = await fetchChannelMuting();
+			expect(mutings).toHaveLength(1);
+			expect(mutings[0].channelId).toBe(channel2.id);
+		});
+	});
+});
diff --git a/packages/backend/test/unit/NoteCreateService.ts b/packages/backend/test/unit/NoteCreateService.ts
index 23f409420e..f3d3d1da99 100644
--- a/packages/backend/test/unit/NoteCreateService.ts
+++ b/packages/backend/test/unit/NoteCreateService.ts
@@ -61,6 +61,7 @@ describe('NoteCreateService', () => {
 			replyUserHost: null,
 			renoteUserId: null,
 			renoteUserHost: null,
+			renoteChannelId: null,
 		};
 
 		const poll: IPoll = {
diff --git a/packages/backend/test/unit/misc/is-renote.ts b/packages/backend/test/unit/misc/is-renote.ts
index 74d17abcb6..3c628d8298 100644
--- a/packages/backend/test/unit/misc/is-renote.ts
+++ b/packages/backend/test/unit/misc/is-renote.ts
@@ -44,6 +44,7 @@ const base: MiNote = {
 	replyUserHost: null,
 	renoteUserId: null,
 	renoteUserHost: null,
+	renoteChannelId: null,
 };
 
 describe('misc:is-renote', () => {
diff --git a/packages/frontend/src/pages/channel.vue b/packages/frontend/src/pages/channel.vue
index 7c19e6798d..dff8be2a57 100644
--- a/packages/frontend/src/pages/channel.vue
+++ b/packages/frontend/src/pages/channel.vue
@@ -129,24 +129,25 @@ useInterval(() => {
 });
 
 watch(() => props.channelId, async () => {
-	channel.value = await misskeyApi('channels/show', {
+	const _channel = await misskeyApi('channels/show', {
 		channelId: props.channelId,
 	});
-	if (channel.value == null) return; // TSを黙らすため
 
-	favorited.value = channel.value.isFavorited ?? false;
-	if (favorited.value || channel.value.isFollowing) {
+	favorited.value = _channel.isFavorited ?? false;
+	if (favorited.value || _channel.isFollowing) {
 		tab.value = 'timeline';
 	}
 
-	if ((favorited.value || channel.value.isFollowing) && channel.value.lastNotedAt) {
-		const lastReadedAt: number = miLocalStorage.getItemAsJson(`channelLastReadedAt:${channel.value.id}`) ?? 0;
-		const lastNotedAt = Date.parse(channel.value.lastNotedAt);
+	if ((favorited.value || _channel.isFollowing) && _channel.lastNotedAt) {
+		const lastReadedAt: number = miLocalStorage.getItemAsJson(`channelLastReadedAt:${_channel.id}`) ?? 0;
+		const lastNotedAt = Date.parse(_channel.lastNotedAt);
 
 		if (lastNotedAt > lastReadedAt) {
-			miLocalStorage.setItemAsJson(`channelLastReadedAt:${channel.value.id}`, lastNotedAt);
+			miLocalStorage.setItemAsJson(`channelLastReadedAt:${_channel.id}`, lastNotedAt);
 		}
 	}
+
+	channel.value = _channel;
 }, { immediate: true });
 
 function edit() {
@@ -190,6 +191,53 @@ async function unfavorite() {
 	});
 }
 
+async function mute() {
+	if (!channel.value) return;
+	const _channel = channel.value;
+
+	const { canceled, result: period } = await os.select({
+		title: i18n.ts.mutePeriod,
+		items: [{
+			value: 'indefinitely', text: i18n.ts.indefinitely,
+		}, {
+			value: 'tenMinutes', text: i18n.ts.tenMinutes,
+		}, {
+			value: 'oneHour', text: i18n.ts.oneHour,
+		}, {
+			value: 'oneDay', text: i18n.ts.oneDay,
+		}, {
+			value: 'oneWeek', text: i18n.ts.oneWeek,
+		}],
+		default: 'indefinitely',
+	});
+	if (canceled) return;
+
+	const expiresAt = period === 'indefinitely' ? null
+		: period === 'tenMinutes' ? Date.now() + (1000 * 60 * 10)
+		: period === 'oneHour' ? Date.now() + (1000 * 60 * 60)
+		: period === 'oneDay' ? Date.now() + (1000 * 60 * 60 * 24)
+		: period === 'oneWeek' ? Date.now() + (1000 * 60 * 60 * 24 * 7)
+		: null;
+
+	os.apiWithDialog('channels/mute/create', {
+		channelId: _channel.id,
+		expiresAt,
+	}).then(() => {
+		_channel.isMuting = true;
+	});
+}
+
+async function unmute() {
+	if (!channel.value) return;
+	const _channel = channel.value;
+
+	os.apiWithDialog('channels/mute/delete', {
+		channelId: _channel.id,
+	}).then(() => {
+		_channel.isMuting = false;
+	});
+}
+
 async function search() {
 	if (!channel.value) return;
 
@@ -243,6 +291,24 @@ const headerActions = computed(() => {
 			});
 		}
 
+		if (!channel.value.isMuting) {
+			headerItems.push({
+				icon: 'ti ti-volume',
+				text: i18n.ts.mute,
+				handler: async (): Promise<void> => {
+					await mute();
+				},
+			});
+		} else {
+			headerItems.push({
+				icon: 'ti ti-volume-off',
+				text: i18n.ts.unmute,
+				handler: async (): Promise<void> => {
+					await unmute();
+				},
+			});
+		}
+
 		if (($i && $i.id === channel.value.userId) || iAmModerator) {
 			headerItems.push({
 				icon: 'ti ti-settings',
diff --git a/packages/misskey-js/etc/misskey-js.api.md b/packages/misskey-js/etc/misskey-js.api.md
index 32af619a49..bb490c178b 100644
--- a/packages/misskey-js/etc/misskey-js.api.md
+++ b/packages/misskey-js/etc/misskey-js.api.md
@@ -939,6 +939,15 @@ type ChannelsFollowedResponse = operations['channels___followed']['responses']['
 type ChannelsFollowRequest = operations['channels___follow']['requestBody']['content']['application/json'];
 
 // @public (undocumented)
+type ChannelsMuteCreateRequest = operations['channels___mute___create']['requestBody']['content']['application/json'];
+
+// @public (undocumented)
+type ChannelsMuteDeleteRequest = operations['channels___mute___delete']['requestBody']['content']['application/json'];
+
+// @public (undocumented)
+type ChannelsMuteListResponse = operations['channels___mute___list']['responses']['200']['content']['application/json'];
+
+// @public (undocumented)
 type ChannelsMyFavoritesResponse = operations['channels___my-favorites']['responses']['200']['content']['application/json'];
 
 // @public (undocumented)
@@ -1678,6 +1687,9 @@ declare namespace entities {
         ChannelsFollowRequest,
         ChannelsFollowedRequest,
         ChannelsFollowedResponse,
+        ChannelsMuteCreateRequest,
+        ChannelsMuteDeleteRequest,
+        ChannelsMuteListResponse,
         ChannelsMyFavoritesResponse,
         ChannelsOwnedRequest,
         ChannelsOwnedResponse,
diff --git a/packages/misskey-js/generator/package.json b/packages/misskey-js/generator/package.json
index 21ff792f99..7c276e93c7 100644
--- a/packages/misskey-js/generator/package.json
+++ b/packages/misskey-js/generator/package.json
@@ -15,7 +15,8 @@
 		"openapi-typescript": "7.9.1",
 		"ts-case-convert": "2.1.0",
 		"tsx": "4.20.6",
-		"typescript": "5.9.3"
+		"typescript": "5.9.3",
+		"eslint": "9.27.0"
 	},
 	"files": [
 		"built"
diff --git a/packages/misskey-js/src/autogen/apiClientJSDoc.ts b/packages/misskey-js/src/autogen/apiClientJSDoc.ts
index c4428efcc2..af3a09a16e 100644
--- a/packages/misskey-js/src/autogen/apiClientJSDoc.ts
+++ b/packages/misskey-js/src/autogen/apiClientJSDoc.ts
@@ -1394,6 +1394,39 @@ declare module '../api.js' {
     /**
      * No description provided.
      * 
+     * **Credential required**: *Yes* / **Permission**: *write:channels*
+     */
+    request<E extends 'channels/mute/create', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
+    /**
+     * No description provided.
+     * 
+     * **Credential required**: *Yes* / **Permission**: *write:channels*
+     */
+    request<E extends 'channels/mute/delete', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
+    /**
+     * No description provided.
+     * 
+     * **Credential required**: *Yes* / **Permission**: *read:channels*
+     */
+    request<E extends 'channels/mute/list', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
+    /**
+     * No description provided.
+     * 
      * **Credential required**: *Yes* / **Permission**: *read:channels*
      */
     request<E extends 'channels/my-favorites', P extends Endpoints[E]['req']>(
diff --git a/packages/misskey-js/src/autogen/endpoint.ts b/packages/misskey-js/src/autogen/endpoint.ts
index 4b83a9dd9b..c3ef3de4e6 100644
--- a/packages/misskey-js/src/autogen/endpoint.ts
+++ b/packages/misskey-js/src/autogen/endpoint.ts
@@ -182,6 +182,9 @@ import type {
 	ChannelsFollowRequest,
 	ChannelsFollowedRequest,
 	ChannelsFollowedResponse,
+	ChannelsMuteCreateRequest,
+	ChannelsMuteDeleteRequest,
+	ChannelsMuteListResponse,
 	ChannelsMyFavoritesResponse,
 	ChannelsOwnedRequest,
 	ChannelsOwnedResponse,
@@ -782,6 +785,9 @@ export type Endpoints = {
 	'channels/featured': { req: EmptyRequest; res: ChannelsFeaturedResponse };
 	'channels/follow': { req: ChannelsFollowRequest; res: EmptyResponse };
 	'channels/followed': { req: ChannelsFollowedRequest; res: ChannelsFollowedResponse };
+	'channels/mute/create': { req: ChannelsMuteCreateRequest; res: EmptyResponse };
+	'channels/mute/delete': { req: ChannelsMuteDeleteRequest; res: EmptyResponse };
+	'channels/mute/list': { req: EmptyRequest; res: ChannelsMuteListResponse };
 	'channels/my-favorites': { req: EmptyRequest; res: ChannelsMyFavoritesResponse };
 	'channels/owned': { req: ChannelsOwnedRequest; res: ChannelsOwnedResponse };
 	'channels/search': { req: ChannelsSearchRequest; res: ChannelsSearchResponse };
diff --git a/packages/misskey-js/src/autogen/entities.ts b/packages/misskey-js/src/autogen/entities.ts
index 4ebe9a5155..0d57b065dc 100644
--- a/packages/misskey-js/src/autogen/entities.ts
+++ b/packages/misskey-js/src/autogen/entities.ts
@@ -185,6 +185,9 @@ export type ChannelsFeaturedResponse = operations['channels___featured']['respon
 export type ChannelsFollowRequest = operations['channels___follow']['requestBody']['content']['application/json'];
 export type ChannelsFollowedRequest = operations['channels___followed']['requestBody']['content']['application/json'];
 export type ChannelsFollowedResponse = operations['channels___followed']['responses']['200']['content']['application/json'];
+export type ChannelsMuteCreateRequest = operations['channels___mute___create']['requestBody']['content']['application/json'];
+export type ChannelsMuteDeleteRequest = operations['channels___mute___delete']['requestBody']['content']['application/json'];
+export type ChannelsMuteListResponse = operations['channels___mute___list']['responses']['200']['content']['application/json'];
 export type ChannelsMyFavoritesResponse = operations['channels___my-favorites']['responses']['200']['content']['application/json'];
 export type ChannelsOwnedRequest = operations['channels___owned']['requestBody']['content']['application/json'];
 export type ChannelsOwnedResponse = operations['channels___owned']['responses']['200']['content']['application/json'];
diff --git a/packages/misskey-js/src/autogen/types.ts b/packages/misskey-js/src/autogen/types.ts
index 3e95651071..4867854b20 100644
--- a/packages/misskey-js/src/autogen/types.ts
+++ b/packages/misskey-js/src/autogen/types.ts
@@ -1140,6 +1140,33 @@ export type paths = {
          */
         post: operations['channels___followed'];
     };
+    '/channels/mute/create': {
+        /**
+         * channels/mute/create
+         * @description No description provided.
+         *
+         *     **Credential required**: *Yes* / **Permission**: *write:channels*
+         */
+        post: operations['channels___mute___create'];
+    };
+    '/channels/mute/delete': {
+        /**
+         * channels/mute/delete
+         * @description No description provided.
+         *
+         *     **Credential required**: *Yes* / **Permission**: *write:channels*
+         */
+        post: operations['channels___mute___delete'];
+    };
+    '/channels/mute/list': {
+        /**
+         * channels/mute/list
+         * @description No description provided.
+         *
+         *     **Credential required**: *Yes* / **Permission**: *read:channels*
+         */
+        post: operations['channels___mute___list'];
+    };
     '/channels/my-favorites': {
         /**
          * channels/my-favorites
@@ -4929,6 +4956,7 @@ export type components = {
             allowRenoteToExternal: boolean;
             isFollowing?: boolean;
             isFavorited?: boolean;
+            isMuting?: boolean;
             pinnedNotes?: components['schemas']['Note'][];
         };
         QueueCount: {
@@ -14790,6 +14818,192 @@ export interface operations {
             };
         };
     };
+    channels___mute___create: {
+        requestBody: {
+            content: {
+                'application/json': {
+                    /** Format: misskey:id */
+                    channelId: string;
+                    /** @description A Unix Epoch timestamp that must lie in the future. `null` means an indefinite mute. */
+                    expiresAt?: number | null;
+                };
+            };
+        };
+        responses: {
+            /** @description OK (without any results) */
+            204: {
+                headers: {
+                    [name: string]: unknown;
+                };
+            };
+            /** @description Client error */
+            400: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Authentication error */
+            401: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Forbidden error */
+            403: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description I'm Ai */
+            418: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Internal server error */
+            500: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+        };
+    };
+    channels___mute___delete: {
+        requestBody: {
+            content: {
+                'application/json': {
+                    /** Format: misskey:id */
+                    channelId: string;
+                };
+            };
+        };
+        responses: {
+            /** @description OK (without any results) */
+            204: {
+                headers: {
+                    [name: string]: unknown;
+                };
+            };
+            /** @description Client error */
+            400: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Authentication error */
+            401: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Forbidden error */
+            403: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description I'm Ai */
+            418: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Internal server error */
+            500: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+        };
+    };
+    channels___mute___list: {
+        responses: {
+            /** @description OK (with results) */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Channel'][];
+                };
+            };
+            /** @description Client error */
+            400: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Authentication error */
+            401: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Forbidden error */
+            403: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description I'm Ai */
+            418: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+            /** @description Internal server error */
+            500: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    'application/json': components['schemas']['Error'];
+                };
+            };
+        };
+    };
     'channels___my-favorites': {
         responses: {
             /** @description OK (with results) */
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 6e45b17726..b0b82e0251 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1478,10 +1478,13 @@ importers:
         version: 24.9.1
       '@typescript-eslint/eslint-plugin':
         specifier: 8.46.1
-        version: 8.46.1(@typescript-eslint/parser@8.46.1(eslint@9.37.0)(typescript@5.9.3))(eslint@9.37.0)(typescript@5.9.3)
+        version: 8.46.1(@typescript-eslint/parser@8.46.1(eslint@9.27.0)(typescript@5.9.3))(eslint@9.27.0)(typescript@5.9.3)
       '@typescript-eslint/parser':
         specifier: 8.46.1
-        version: 8.46.1(eslint@9.37.0)(typescript@5.9.3)
+        version: 8.46.1(eslint@9.27.0)(typescript@5.9.3)
+      eslint:
+        specifier: 9.27.0
+        version: 9.27.0
       openapi-types:
         specifier: 12.1.3
         version: 12.1.3
@@ -2274,14 +2277,30 @@ packages:
     resolution: {integrity: sha512-lpHyRyplhGPL5mGEh6M9O5nnKk0Gz4bFI+Zu6tKlPpDUN7XshWvH9C/px4UVm87IAANE0W81CEsNGbS1KlzXpA==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  '@eslint/config-array@0.20.1':
+    resolution: {integrity: sha512-OL0RJzC/CBzli0DrrR31qzj6d6i6Mm3HByuhflhl4LOBiWxN+3i6/t/ZQQNii4tjksXi8r2CRW1wMpWA2ULUEw==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+
   '@eslint/config-array@0.21.0':
     resolution: {integrity: sha512-ENIdc4iLu0d93HeYirvKmrzshzofPw6VkZRKQGe9Nv46ZnWUzcF1xV01dcvEg/1wXUR61OmmlSfyeyO7EvjLxQ==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  '@eslint/config-helpers@0.2.3':
+    resolution: {integrity: sha512-u180qk2Um1le4yf0ruXH3PYFeEZeYC3p/4wCTKrr2U1CmGdzGi3KtY0nuPDH48UJxlKCC5RDzbcbh4X0XlqgHg==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+
   '@eslint/config-helpers@0.4.0':
     resolution: {integrity: sha512-WUFvV4WoIwW8Bv0KeKCIIEgdSiFOsulyN0xrMu+7z43q/hkOLXjvb5u7UC9jDxvRzcrbEmuZBX5yJZz1741jog==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  '@eslint/core@0.14.0':
+    resolution: {integrity: sha512-qIbV0/JZr7iSDjqAc60IqbLdsj9GDt16xQtWD+B78d/HAlvysGdZZ6rpJHGAc2T0FQx1X6thsSPdnoiGKdNtdg==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+
+  '@eslint/core@0.15.2':
+    resolution: {integrity: sha512-78Md3/Rrxh83gCxoUc0EiciuOHsIITzLy53m3d9UyiW8y9Dj2D29FeETqyKA+BRK76tnTp6RXWb3pCay8Oyomg==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+
   '@eslint/core@0.16.0':
     resolution: {integrity: sha512-nmC8/totwobIiFcGkDza3GIKfAw1+hLiYVrh3I1nIomQ8PEr5cxg34jnkmGawul/ep52wGRAcyeDCNtWKSOj4Q==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -2290,6 +2309,10 @@ packages:
     resolution: {integrity: sha512-gtF186CXhIl1p4pJNGZw8Yc6RlshoePRvE0X91oPGb3vZ8pM3qOS9W9NGPat9LziaBV7XrJWGylNQXkGcnM3IQ==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  '@eslint/js@9.27.0':
+    resolution: {integrity: sha512-G5JD9Tu5HJEu4z2Uo4aHY2sLV64B7CDMXxFzqzjl3NKd6RVzSXNoE80jk7Y0lJkTTkjiIhBAqmlYwjuBY3tvpA==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+
   '@eslint/js@9.37.0':
     resolution: {integrity: sha512-jaS+NJ+hximswBG6pjNX0uEJZkrT0zwpVi3BA3vX22aFGjJjmgSTSmPpZCRKmoBL5VY/M6p0xsSJx7rk7sy5gg==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -2298,6 +2321,10 @@ packages:
     resolution: {integrity: sha512-RBMg5FRL0I0gs51M/guSAj5/e14VQ4tpZnQNWwuDT66P14I43ItmPfIZRhO9fUVIPOAQXU47atlywZ/czoqFPA==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  '@eslint/plugin-kit@0.3.5':
+    resolution: {integrity: sha512-Z5kJ+wU3oA7MMIqVR9tyZRtjYPr4OC004Q4Rw7pgOKUOKkJfZ3O24nz3WYfGRpMDNmcOi3TwQOmgm7B7Tpii0w==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+
   '@eslint/plugin-kit@0.4.0':
     resolution: {integrity: sha512-sB5uyeq+dwCWyPi31B2gQlVlo+j5brPlWx4yZBrEaRo/nhdDE8Xke1gsGgtiBdaBTxuTkceLVuVt/pclrasb0A==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -6420,6 +6447,16 @@ packages:
     resolution: {integrity: sha512-Uhdk5sfqcee/9H/rCOJikYz67o0a2Tw2hGRPOG2Y1R2dg7brRe1uG0yaNQDHu+TO/uQPF/5eCapvYSmHUjt7JQ==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
 
+  eslint@9.27.0:
+    resolution: {integrity: sha512-ixRawFQuMB9DZ7fjU3iGGganFDp3+45bPOdaRurcFHSXO1e/sYwUX/FtQZpLZJR6SjMoJH8hR2pPEAfDyCoU2Q==}
+    engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
+    hasBin: true
+    peerDependencies:
+      jiti: '*'
+    peerDependenciesMeta:
+      jiti:
+        optional: true
+
   eslint@9.37.0:
     resolution: {integrity: sha512-XyLmROnACWqSxiGYArdef1fItQd47weqB7iwtfr9JHwRrqIXZdcFMvvEcL9xHCmL0SNsOvF0c42lWyM1U5dgig==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -12394,6 +12431,11 @@ snapshots:
   '@esbuild/win32-x64@0.25.10':
     optional: true
 
+  '@eslint-community/eslint-utils@4.9.0(eslint@9.27.0)':
+    dependencies:
+      eslint: 9.27.0
+      eslint-visitor-keys: 3.4.3
+
   '@eslint-community/eslint-utils@4.9.0(eslint@9.37.0)':
     dependencies:
       eslint: 9.37.0
@@ -12403,6 +12445,14 @@ snapshots:
 
   '@eslint/compat@1.1.1': {}
 
+  '@eslint/config-array@0.20.1':
+    dependencies:
+      '@eslint/object-schema': 2.1.6
+      debug: 4.4.3(supports-color@10.2.0)
+      minimatch: 3.1.2
+    transitivePeerDependencies:
+      - supports-color
+
   '@eslint/config-array@0.21.0':
     dependencies:
       '@eslint/object-schema': 2.1.6
@@ -12411,10 +12461,20 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@eslint/config-helpers@0.2.3': {}
+
   '@eslint/config-helpers@0.4.0':
     dependencies:
       '@eslint/core': 0.16.0
 
+  '@eslint/core@0.14.0':
+    dependencies:
+      '@types/json-schema': 7.0.15
+
+  '@eslint/core@0.15.2':
+    dependencies:
+      '@types/json-schema': 7.0.15
+
   '@eslint/core@0.16.0':
     dependencies:
       '@types/json-schema': 7.0.15
@@ -12433,10 +12493,17 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@eslint/js@9.27.0': {}
+
   '@eslint/js@9.37.0': {}
 
   '@eslint/object-schema@2.1.6': {}
 
+  '@eslint/plugin-kit@0.3.5':
+    dependencies:
+      '@eslint/core': 0.15.2
+      levn: 0.4.1
+
   '@eslint/plugin-kit@0.4.0':
     dependencies:
       '@eslint/core': 0.16.0
@@ -15251,6 +15318,23 @@ snapshots:
       '@types/node': 24.9.1
     optional: true
 
+  '@typescript-eslint/eslint-plugin@8.46.1(@typescript-eslint/parser@8.46.1(eslint@9.27.0)(typescript@5.9.3))(eslint@9.27.0)(typescript@5.9.3)':
+    dependencies:
+      '@eslint-community/regexpp': 4.12.1
+      '@typescript-eslint/parser': 8.46.1(eslint@9.27.0)(typescript@5.9.3)
+      '@typescript-eslint/scope-manager': 8.46.1
+      '@typescript-eslint/type-utils': 8.46.1(eslint@9.27.0)(typescript@5.9.3)
+      '@typescript-eslint/utils': 8.46.1(eslint@9.27.0)(typescript@5.9.3)
+      '@typescript-eslint/visitor-keys': 8.46.1
+      eslint: 9.27.0
+      graphemer: 1.4.0
+      ignore: 7.0.5
+      natural-compare: 1.4.0
+      ts-api-utils: 2.1.0(typescript@5.9.3)
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+
   '@typescript-eslint/eslint-plugin@8.46.1(@typescript-eslint/parser@8.46.1(eslint@9.37.0)(typescript@5.9.3))(eslint@9.37.0)(typescript@5.9.3)':
     dependencies:
       '@eslint-community/regexpp': 4.12.1
@@ -15268,6 +15352,18 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@typescript-eslint/parser@8.46.1(eslint@9.27.0)(typescript@5.9.3)':
+    dependencies:
+      '@typescript-eslint/scope-manager': 8.46.1
+      '@typescript-eslint/types': 8.46.1
+      '@typescript-eslint/typescript-estree': 8.46.1(typescript@5.9.3)
+      '@typescript-eslint/visitor-keys': 8.46.1
+      debug: 4.4.3(supports-color@10.2.0)
+      eslint: 9.27.0
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+
   '@typescript-eslint/parser@8.46.1(eslint@9.37.0)(typescript@5.9.3)':
     dependencies:
       '@typescript-eslint/scope-manager': 8.46.1
@@ -15298,6 +15394,18 @@ snapshots:
     dependencies:
       typescript: 5.9.3
 
+  '@typescript-eslint/type-utils@8.46.1(eslint@9.27.0)(typescript@5.9.3)':
+    dependencies:
+      '@typescript-eslint/types': 8.46.1
+      '@typescript-eslint/typescript-estree': 8.46.1(typescript@5.9.3)
+      '@typescript-eslint/utils': 8.46.1(eslint@9.27.0)(typescript@5.9.3)
+      debug: 4.4.3(supports-color@10.2.0)
+      eslint: 9.27.0
+      ts-api-utils: 2.1.0(typescript@5.9.3)
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+
   '@typescript-eslint/type-utils@8.46.1(eslint@9.37.0)(typescript@5.9.3)':
     dependencies:
       '@typescript-eslint/types': 8.46.1
@@ -15328,6 +15436,17 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  '@typescript-eslint/utils@8.46.1(eslint@9.27.0)(typescript@5.9.3)':
+    dependencies:
+      '@eslint-community/eslint-utils': 4.9.0(eslint@9.27.0)
+      '@typescript-eslint/scope-manager': 8.46.1
+      '@typescript-eslint/types': 8.46.1
+      '@typescript-eslint/typescript-estree': 8.46.1(typescript@5.9.3)
+      eslint: 9.27.0
+      typescript: 5.9.3
+    transitivePeerDependencies:
+      - supports-color
+
   '@typescript-eslint/utils@8.46.1(eslint@9.37.0)(typescript@5.9.3)':
     dependencies:
       '@eslint-community/eslint-utils': 4.9.0(eslint@9.37.0)
@@ -17322,6 +17441,46 @@ snapshots:
 
   eslint-visitor-keys@4.2.1: {}
 
+  eslint@9.27.0:
+    dependencies:
+      '@eslint-community/eslint-utils': 4.9.0(eslint@9.27.0)
+      '@eslint-community/regexpp': 4.12.1
+      '@eslint/config-array': 0.20.1
+      '@eslint/config-helpers': 0.2.3
+      '@eslint/core': 0.14.0
+      '@eslint/eslintrc': 3.3.1
+      '@eslint/js': 9.27.0
+      '@eslint/plugin-kit': 0.3.5
+      '@humanfs/node': 0.16.7
+      '@humanwhocodes/module-importer': 1.0.1
+      '@humanwhocodes/retry': 0.4.3
+      '@types/estree': 1.0.8
+      '@types/json-schema': 7.0.15
+      ajv: 6.12.6
+      chalk: 4.1.2
+      cross-spawn: 7.0.6
+      debug: 4.4.3(supports-color@10.2.0)
+      escape-string-regexp: 4.0.0
+      eslint-scope: 8.4.0
+      eslint-visitor-keys: 4.2.1
+      espree: 10.4.0
+      esquery: 1.6.0
+      esutils: 2.0.3
+      fast-deep-equal: 3.1.3
+      file-entry-cache: 8.0.0
+      find-up: 5.0.0
+      glob-parent: 6.0.2
+      ignore: 5.3.2
+      imurmurhash: 0.1.4
+      is-glob: 4.0.3
+      json-stable-stringify-without-jsonify: 1.0.1
+      lodash.merge: 4.6.2
+      minimatch: 3.1.2
+      natural-compare: 1.4.0
+      optionator: 0.9.4
+    transitivePeerDependencies:
+      - supports-color
+
   eslint@9.37.0:
     dependencies:
       '@eslint-community/eslint-utils': 4.9.0(eslint@9.37.0)