Allow name property of user to be null

20 files changed, 145 insertions, 38 deletions

diff --git a/src/client/app/mobile/views/components/notification-preview.vue b/src/client/app/mobile/views/components/notification-preview.vue
index 77abd3c0ea..0492c5d86c 100644
--- a/src/client/app/mobile/views/components/notification-preview.vue
+++ b/src/client/app/mobile/views/components/notification-preview.vue
@@ -3,7 +3,7 @@
 	<template v-if="notification.type == 'reaction'">
 		<img class="avatar" :src="`${notification.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p><mk-reaction-icon :reaction="notification.reaction"/>{{ notification.user.name }}</p>
+			<p><mk-reaction-icon :reaction="notification.reaction"/>{{ name }}</p>
 			<p class="post-ref">%fa:quote-left%{{ getPostSummary(notification.post) }}%fa:quote-right%</p>
 		</div>
 	</template>
@@ -11,7 +11,7 @@
 	<template v-if="notification.type == 'repost'">
 		<img class="avatar" :src="`${notification.post.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p>%fa:retweet%{{ notification.post.user.name }}</p>
+			<p>%fa:retweet%{{ posterName }}</p>
 			<p class="post-ref">%fa:quote-left%{{ getPostSummary(notification.post.repost) }}%fa:quote-right%</p>
 		</div>
 	</template>
@@ -19,7 +19,7 @@
 	<template v-if="notification.type == 'quote'">
 		<img class="avatar" :src="`${notification.post.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p>%fa:quote-left%{{ notification.post.user.name }}</p>
+			<p>%fa:quote-left%{{ posterName }}</p>
 			<p class="post-preview">{{ getPostSummary(notification.post) }}</p>
 		</div>
 	</template>
@@ -27,14 +27,14 @@
 	<template v-if="notification.type == 'follow'">
 		<img class="avatar" :src="`${notification.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p>%fa:user-plus%{{ notification.user.name }}</p>
+			<p>%fa:user-plus%{{ name }}</p>
 		</div>
 	</template>
 
 	<template v-if="notification.type == 'reply'">
 		<img class="avatar" :src="`${notification.post.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p>%fa:reply%{{ notification.post.user.name }}</p>
+			<p>%fa:reply%{{ posterName }}</p>
 			<p class="post-preview">{{ getPostSummary(notification.post) }}</p>
 		</div>
 	</template>
@@ -42,7 +42,7 @@
 	<template v-if="notification.type == 'mention'">
 		<img class="avatar" :src="`${notification.post.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p>%fa:at%{{ notification.post.user.name }}</p>
+			<p>%fa:at%{{ posterName }}</p>
 			<p class="post-preview">{{ getPostSummary(notification.post) }}</p>
 		</div>
 	</template>
@@ -50,7 +50,7 @@
 	<template v-if="notification.type == 'poll_vote'">
 		<img class="avatar" :src="`${notification.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 		<div class="text">
-			<p>%fa:chart-pie%{{ notification.user.name }}</p>
+			<p>%fa:chart-pie%{{ name }}</p>
 			<p class="post-ref">%fa:quote-left%{{ getPostSummary(notification.post) }}%fa:quote-right%</p>
 		</div>
 	</template>
@@ -60,9 +60,18 @@
 <script lang="ts">
 import Vue from 'vue';
 import getPostSummary from '../../../../../renderers/get-post-summary';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['notification'],
+	computed: {
+		name() {
+			return getUserName(this.notification.user);
+		},
+		posterName() {
+			return getUserName(this.notification.post.user);
+		}
+	},
 	data() {
 		return {
 			getPostSummary
diff --git a/src/client/app/mobile/views/components/notification.vue b/src/client/app/mobile/views/components/notification.vue
index 189d7195fb..62a0e6425e 100644
--- a/src/client/app/mobile/views/components/notification.vue
+++ b/src/client/app/mobile/views/components/notification.vue
@@ -8,7 +8,7 @@
 		<div class="text">
 			<p>
 				<mk-reaction-icon :reaction="notification.reaction"/>
-				<router-link :to="`/@${acct}`">{{ notification.user.name }}</router-link>
+				<router-link :to="`/@${acct}`">{{ getUserName(notification.user) }}</router-link>
 			</p>
 			<router-link class="post-ref" :to="`/@${acct}/${notification.post.id}`">
 				%fa:quote-left%{{ getPostSummary(notification.post) }}
@@ -25,7 +25,7 @@
 		<div class="text">
 			<p>
 				%fa:retweet%
-				<router-link :to="`/@${acct}`">{{ notification.post.user.name }}</router-link>
+				<router-link :to="`/@${acct}`">{{ getUserName(notification.post.user) }}</router-link>
 			</p>
 			<router-link class="post-ref" :to="`/@${acct}/${notification.post.id}`">
 				%fa:quote-left%{{ getPostSummary(notification.post.repost) }}%fa:quote-right%
@@ -45,7 +45,7 @@
 		<div class="text">
 			<p>
 				%fa:user-plus%
-				<router-link :to="`/@${acct}`">{{ notification.user.name }}</router-link>
+				<router-link :to="`/@${acct}`">{{ getUserName(notification.user) }}</router-link>
 			</p>
 		</div>
 	</div>
@@ -66,7 +66,7 @@
 		<div class="text">
 			<p>
 				%fa:chart-pie%
-				<router-link :to="`/@${acct}`">{{ notification.user.name }}</router-link>
+				<router-link :to="`/@${acct}`">{{ getUserName(notification.user) }}</router-link>
 			</p>
 			<router-link class="post-ref" :to="`/@${acct}/${notification.post.id}`">
 				%fa:quote-left%{{ getPostSummary(notification.post) }}%fa:quote-right%
@@ -80,12 +80,19 @@
 import Vue from 'vue';
 import getPostSummary from '../../../../../renderers/get-post-summary';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['notification'],
 	computed: {
 		acct() {
 			return getAcct(this.notification.user);
+		},
+		name() {
+			return getUserName(this.notification.user);
+		},
+		posterName() {
+ 			return getUserName(this.notification.post.user);
 		}
 	},
 	data() {
diff --git a/src/client/app/mobile/views/components/post-card.vue b/src/client/app/mobile/views/components/post-card.vue
index 38d4522d26..68a42ef249 100644
--- a/src/client/app/mobile/views/components/post-card.vue
+++ b/src/client/app/mobile/views/components/post-card.vue
@@ -2,7 +2,7 @@
 <div class="mk-post-card">
 	<a :href="`/@${acct}/${post.id}`">
 		<header>
-			<img :src="`${acct}?thumbnail&size=64`" alt="avatar"/><h3>{{ post.user.name }}</h3>
+			<img :src="`${acct}?thumbnail&size=64`" alt="avatar"/><h3>{{ name }}</h3>
 		</header>
 		<div>
 			{{ text }}
@@ -16,6 +16,7 @@
 import Vue from 'vue';
 import summary from '../../../../../renderers/get-post-summary';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['post'],
@@ -23,6 +24,9 @@ export default Vue.extend({
 		acct() {
 			return getAcct(this.post.user);
 		},
+		name() {
+			return getUserName(this.post.user);
+		},
 		text(): string {
 			return summary(this.post);
 		}
diff --git a/src/client/app/mobile/views/components/post-detail.sub.vue b/src/client/app/mobile/views/components/post-detail.sub.vue
index 7ff9f1aabd..98d6a14cac 100644
--- a/src/client/app/mobile/views/components/post-detail.sub.vue
+++ b/src/client/app/mobile/views/components/post-detail.sub.vue
@@ -5,7 +5,7 @@
 	</router-link>
 	<div class="main">
 		<header>
-			<router-link class="name" :to="`/@${acct}`">{{ post.user.name }}</router-link>
+			<router-link class="name" :to="`/@${acct}`">{{ getUserName(post.user) }}</router-link>
 			<span class="username">@{{ acct }}</span>
 			<router-link class="time" :to="`/@${acct}/${post.id}`">
 				<mk-time :time="post.createdAt"/>
@@ -21,12 +21,16 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['post'],
 	computed: {
 		acct() {
 			return getAcct(this.post.user);
+		},
+		name() {
+			return getUserName(this.post.user);
 		}
 	}
 });
diff --git a/src/client/app/mobile/views/components/post-detail.vue b/src/client/app/mobile/views/components/post-detail.vue
index ed394acd36..0226ce081a 100644
--- a/src/client/app/mobile/views/components/post-detail.vue
+++ b/src/client/app/mobile/views/components/post-detail.vue
@@ -22,7 +22,7 @@
 			</router-link>
 			%fa:retweet%
 			<router-link class="name" :to="`/@${acct}`">
-				{{ post.user.name }}
+				{{ name }}
 			</router-link>
 			がRepost
 		</p>
@@ -33,7 +33,7 @@
 				<img class="avatar" :src="`${p.user.avatarUrl}?thumbnail&size=64`" alt="avatar"/>
 			</router-link>
 			<div>
-				<router-link class="name" :to="`/@${pAcct}`">{{ p.user.name }}</router-link>
+				<router-link class="name" :to="`/@${pAcct}`">{{ pName }}</router-link>
 				<span class="username">@{{ pAcct }}</span>
 			</div>
 		</header>
@@ -81,6 +81,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 import parse from '../../../../../text/parse';
 
 import MkPostMenu from '../../../common/views/components/post-menu.vue';
@@ -114,9 +115,15 @@ export default Vue.extend({
 		acct(): string {
 			return getAcct(this.post.user);
 		},
+		name(): string {
+			return getUserName(this.post.user);
+		},
 		pAcct(): string {
 			return getAcct(this.p.user);
 		},
+		pName(): string {
+			return getUserName(this.p.user);
+		},
 		isRepost(): boolean {
 			return (this.post.repost &&
 				this.post.text == null &&
diff --git a/src/client/app/mobile/views/components/post-preview.vue b/src/client/app/mobile/views/components/post-preview.vue
index 81b0c22bfb..96bd4d5c15 100644
--- a/src/client/app/mobile/views/components/post-preview.vue
+++ b/src/client/app/mobile/views/components/post-preview.vue
@@ -5,7 +5,7 @@
 	</router-link>
 	<div class="main">
 		<header>
-			<router-link class="name" :to="`/@${acct}`">{{ post.user.name }}</router-link>
+			<router-link class="name" :to="`/@${acct}`">{{ name }}</router-link>
 			<span class="username">@{{ acct }}</span>
 			<router-link class="time" :to="`/@${acct}/${post.id}`">
 				<mk-time :time="post.createdAt"/>
@@ -21,12 +21,16 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['post'],
 	computed: {
 		acct() {
 			return getAcct(this.post.user);
+		},
+		name() {
+			return getUserName(this.post.user);
 		}
 	}
 });
diff --git a/src/client/app/mobile/views/components/post.sub.vue b/src/client/app/mobile/views/components/post.sub.vue
index 85ddb91880..909d5cb597 100644
--- a/src/client/app/mobile/views/components/post.sub.vue
+++ b/src/client/app/mobile/views/components/post.sub.vue
@@ -5,7 +5,7 @@
 	</router-link>
 	<div class="main">
 		<header>
-			<router-link class="name" :to="`/@${acct}`">{{ post.user.name }}</router-link>
+			<router-link class="name" :to="`/@${acct}`">{{ getUserName(post.user) }}</router-link>
 			<span class="username">@{{ acct }}</span>
 			<router-link class="created-at" :to="`/@${acct}/${post.id}`">
 				<mk-time :time="post.createdAt"/>
@@ -21,12 +21,16 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['post'],
 	computed: {
 		acct() {
 			return getAcct(this.post.user);
+		},
+		name() {
+			return getUserName(this.post.user);
 		}
 	}
 });
diff --git a/src/client/app/mobile/views/components/post.vue b/src/client/app/mobile/views/components/post.vue
index 1454bc939f..eee1e80fd3 100644
--- a/src/client/app/mobile/views/components/post.vue
+++ b/src/client/app/mobile/views/components/post.vue
@@ -10,7 +10,7 @@
 			</router-link>
 			%fa:retweet%
 			<span>{{ '%i18n:mobile.tags.mk-timeline-post.reposted-by%'.substr(0, '%i18n:mobile.tags.mk-timeline-post.reposted-by%'.indexOf('{')) }}</span>
-			<router-link class="name" :to="`/@${acct}`">{{ post.user.name }}</router-link>
+			<router-link class="name" :to="`/@${acct}`">{{ name }}</router-link>
 			<span>{{ '%i18n:mobile.tags.mk-timeline-post.reposted-by%'.substr('%i18n:mobile.tags.mk-timeline-post.reposted-by%'.indexOf('}') + 1) }}</span>
 		</p>
 		<mk-time :time="post.createdAt"/>
@@ -21,7 +21,7 @@
 		</router-link>
 		<div class="main">
 			<header>
-				<router-link class="name" :to="`/@${pAcct}`">{{ p.user.name }}</router-link>
+				<router-link class="name" :to="`/@${pAcct}`">{{ pName }}</router-link>
 				<span class="is-bot" v-if="p.user.host === null && p.user.account.isBot">bot</span>
 				<span class="username">@{{ pAcct }}</span>
 				<div class="info">
@@ -78,6 +78,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 import parse from '../../../../../text/parse';
 
 import MkPostMenu from '../../../common/views/components/post-menu.vue';
@@ -102,9 +103,15 @@ export default Vue.extend({
 		acct(): string {
 			return getAcct(this.post.user);
 		},
+		name(): string {
+			return getUserName(this.post.user);
+		},
 		pAcct(): string {
 			return getAcct(this.p.user);
 		},
+		pName(): string {
+			return getUserName(this.p.user);
+		},
 		isRepost(): boolean {
 			return (this.post.repost &&
 				this.post.text == null &&
diff --git a/src/client/app/mobile/views/components/ui.header.vue b/src/client/app/mobile/views/components/ui.header.vue
index 2bf47a90a9..fd4f31fd98 100644
--- a/src/client/app/mobile/views/components/ui.header.vue
+++ b/src/client/app/mobile/views/components/ui.header.vue
@@ -3,7 +3,7 @@
 	<mk-special-message/>
 	<div class="main" ref="main">
 		<div class="backdrop"></div>
-		<p ref="welcomeback" v-if="os.isSignedIn">おかえりなさい、<b>{{ os.i.name }}</b>さん</p>
+		<p ref="welcomeback" v-if="os.isSignedIn">おかえりなさい、<b>{{ name }}</b>さん</p>
 		<div class="content" ref="mainContainer">
 			<button class="nav" @click="$parent.isDrawerOpening = true">%fa:bars%</button>
 			<template v-if="hasUnreadNotifications || hasUnreadMessagingMessages || hasGameInvitations">%fa:circle%</template>
@@ -19,9 +19,15 @@
 <script lang="ts">
 import Vue from 'vue';
 import * as anime from 'animejs';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['func'],
+	computed: {
+		name() {
+			return getUserName(this.os.i);
+		}
+	},
 	data() {
 		return {
 			hasUnreadNotifications: false,
diff --git a/src/client/app/mobile/views/components/ui.nav.vue b/src/client/app/mobile/views/components/ui.nav.vue
index a923774a73..61dd8ca9de 100644
--- a/src/client/app/mobile/views/components/ui.nav.vue
+++ b/src/client/app/mobile/views/components/ui.nav.vue
@@ -11,7 +11,7 @@
 		<div class="body" v-if="isOpen">
 			<router-link class="me" v-if="os.isSignedIn" :to="`/@${os.i.username}`">
 				<img class="avatar" :src="`${os.i.avatarUrl}?thumbnail&size=128`" alt="avatar"/>
-				<p class="name">{{ os.i.name }}</p>
+				<p class="name">{{ name }}</p>
 			</router-link>
 			<div class="links">
 				<ul>
@@ -40,9 +40,15 @@
 <script lang="ts">
 import Vue from 'vue';
 import { docsUrl, chUrl, lang } from '../../../config';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['isOpen'],
+	computed: {
+		name() {
+			return getUserName(this.os.i);
+		}
+	},
 	data() {
 		return {
 			hasUnreadNotifications: false,
diff --git a/src/client/app/mobile/views/components/user-card.vue b/src/client/app/mobile/views/components/user-card.vue
index 46fa3b4732..e8698a62f0 100644
--- a/src/client/app/mobile/views/components/user-card.vue
+++ b/src/client/app/mobile/views/components/user-card.vue
@@ -5,7 +5,7 @@
 			<img :src="`${user.avatarUrl}?thumbnail&size=200`" alt="avatar"/>
 		</a>
 	</header>
-	<a class="name" :href="`/@${acct}`" target="_blank">{{ user.name }}</a>
+	<a class="name" :href="`/@${acct}`" target="_blank">{{ name }}</a>
 	<p class="username">@{{ acct }}</p>
 	<mk-follow-button :user="user"/>
 </div>
@@ -14,12 +14,16 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['user'],
 	computed: {
 		acct() {
 			return getAcct(this.user);
+		},
+		name() {
+			return getUserName(this.user);
 		}
 	}
 });
diff --git a/src/client/app/mobile/views/components/user-preview.vue b/src/client/app/mobile/views/components/user-preview.vue
index 00f87e5549..72a6bcf8ad 100644
--- a/src/client/app/mobile/views/components/user-preview.vue
+++ b/src/client/app/mobile/views/components/user-preview.vue
@@ -5,7 +5,7 @@
 	</router-link>
 	<div class="main">
 		<header>
-			<router-link class="name" :to="`/@${acct}`">{{ user.name }}</router-link>
+			<router-link class="name" :to="`/@${acct}`">{{ name }}</router-link>
 			<span class="username">@{{ acct }}</span>
 		</header>
 		<div class="body">
@@ -18,12 +18,16 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../acct/render';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['user'],
 	computed: {
 		acct() {
 			return getAcct(this.user);
+		},
+		name() {
+			return getUserName(this.user);
 		}
 	}
 });
diff --git a/src/client/app/mobile/views/pages/followers.vue b/src/client/app/mobile/views/pages/followers.vue
index d2e6a9aea5..f4225d556d 100644
--- a/src/client/app/mobile/views/pages/followers.vue
+++ b/src/client/app/mobile/views/pages/followers.vue
@@ -2,7 +2,7 @@
 <mk-ui>
 	<template slot="header" v-if="!fetching">
 		<img :src="`${user.avatarUrl}?thumbnail&size=64`" alt="">
-		{{ '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', user.name) }}
+		{{ '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', name) }}
 	</template>
 	<mk-users-list
 		v-if="!fetching"
@@ -20,6 +20,7 @@
 import Vue from 'vue';
 import Progress from '../../../common/scripts/loading';
 import parseAcct from '../../../../../acct/parse';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	data() {
@@ -28,6 +29,11 @@ export default Vue.extend({
 			user: null
 		};
 	},
+	computed: {
+		name() {
+			return getUserName(this.user);
+		}
+	},
 	watch: {
 		$route: 'fetch'
 	},
@@ -46,7 +52,7 @@ export default Vue.extend({
 				this.user = user;
 				this.fetching = false;
 
-				document.title = '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', user.name) + ' | Misskey';
+				document.title = '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', this.name) + ' | Misskey';
 			});
 		},
 		onLoaded() {
diff --git a/src/client/app/mobile/views/pages/following.vue b/src/client/app/mobile/views/pages/following.vue
index 3690536cf5..cc2442e476 100644
--- a/src/client/app/mobile/views/pages/following.vue
+++ b/src/client/app/mobile/views/pages/following.vue
@@ -2,7 +2,7 @@
 <mk-ui>
 	<template slot="header" v-if="!fetching">
 		<img :src="`${user.avatarUrl}?thumbnail&size=64`" alt="">
-		{{ '%i18n:mobile.tags.mk-user-following-page.following-of%'.replace('{}', user.name) }}
+		{{ '%i18n:mobile.tags.mk-user-following-page.following-of%'.replace('{}', name) }}
 	</template>
 	<mk-users-list
 		v-if="!fetching"
@@ -20,6 +20,7 @@
 import Vue from 'vue';
 import Progress from '../../../common/scripts/loading';
 import parseAcct from '../../../../../acct/parse';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	data() {
@@ -28,6 +29,11 @@ export default Vue.extend({
 			user: null
 		};
 	},
+	computed: {
+		name() {
+			return getUserName(this.user);
+		}
+	},
 	watch: {
 		$route: 'fetch'
 	},
@@ -46,7 +52,7 @@ export default Vue.extend({
 				this.user = user;
 				this.fetching = false;
 
-				document.title = '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', user.name) + ' | Misskey';
+				document.title = '%i18n:mobile.tags.mk-user-followers-page.followers-of%'.replace('{}', this.name) + ' | Misskey';
 			});
 		},
 		onLoaded() {
diff --git a/src/client/app/mobile/views/pages/messaging-room.vue b/src/client/app/mobile/views/pages/messaging-room.vue
index 172666eea5..ae6662dc04 100644
--- a/src/client/app/mobile/views/pages/messaging-room.vue
+++ b/src/client/app/mobile/views/pages/messaging-room.vue
@@ -1,7 +1,7 @@
 <template>
 <mk-ui>
 	<span slot="header">
-		<template v-if="user">%fa:R comments%{{ user.name }}</template>
+		<template v-if="user">%fa:R comments%{{ name }}</template>
 		<template v-else><mk-ellipsis/></template>
 	</span>
 	<mk-messaging-room v-if="!fetching" :user="user" :is-naked="true"/>
@@ -11,6 +11,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import parseAcct from '../../../../../acct/parse';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	data() {
@@ -19,6 +20,11 @@ export default Vue.extend({
 			user: null
 		};
 	},
+	computed: {
+		name() {
+			return getUserName(this.user);
+		}
+	},
 	watch: {
 		$route: 'fetch'
 	},
@@ -33,7 +39,7 @@ export default Vue.extend({
 				this.user = user;
 				this.fetching = false;
 
-				document.title = `%i18n:mobile.tags.mk-messaging-room-page.message%: ${user.name} | Misskey`;
+				document.title = `%i18n:mobile.tags.mk-messaging-room-page.message%: ${this.name} | Misskey`;
 			});
 		}
 	}
diff --git a/src/client/app/mobile/views/pages/profile-setting.vue b/src/client/app/mobile/views/pages/profile-setting.vue
index 15f9bc9b68..4a560c0272 100644
--- a/src/client/app/mobile/views/pages/profile-setting.vue
+++ b/src/client/app/mobile/views/pages/profile-setting.vue
@@ -52,7 +52,7 @@ export default Vue.extend({
 		};
 	},
 	created() {
-		this.name = (this as any).os.i.name;
+		this.name = (this as any).os.i.name || '';
 		this.location = (this as any).os.i.account.profile.location;
 		this.description = (this as any).os.i.description;
 		this.birthday = (this as any).os.i.account.profile.birthday;
@@ -94,7 +94,7 @@ export default Vue.extend({
 			this.saving = true;
 
 			(this as any).api('i/update', {
-				name: this.name,
+				name: this.name || null,
 				location: this.location || null,
 				description: this.description || null,
 				birthday: this.birthday || null
diff --git a/src/client/app/mobile/views/pages/settings.vue b/src/client/app/mobile/views/pages/settings.vue
index a945a21c5c..58a9d4e37e 100644
--- a/src/client/app/mobile/views/pages/settings.vue
+++ b/src/client/app/mobile/views/pages/settings.vue
@@ -2,7 +2,7 @@
 <mk-ui>
 	<span slot="header">%fa:cog%%i18n:mobile.tags.mk-settings-page.settings%</span>
 	<div :class="$style.content">
-		<p v-html="'%i18n:mobile.tags.mk-settings.signed-in-as%'.replace('{}', '<b>' + os.i.name + '</b>')"></p>
+		<p v-html="'%i18n:mobile.tags.mk-settings.signed-in-as%'.replace('{}', '<b>' + name + '</b>')"></p>
 		<ul>
 			<li><router-link to="./settings/profile">%fa:user%%i18n:mobile.tags.mk-settings-page.profile%%fa:angle-right%</router-link></li>
 			<li><router-link to="./settings/authorized-apps">%fa:puzzle-piece%%i18n:mobile.tags.mk-settings-page.applications%%fa:angle-right%</router-link></li>
@@ -20,6 +20,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import { version, codename } from '../../../config';
+import getUserName from '../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	data() {
@@ -28,6 +29,11 @@ export default Vue.extend({
 			codename
 		};
 	},
+	computed: {
+		name() {
+			return getUserName(this.os.i);
+		}
+	},
 	mounted() {
 		document.title = 'Misskey | %i18n:mobile.tags.mk-settings-page.settings%';
 		document.documentElement.style.background = '#313a42';
diff --git a/src/client/app/mobile/views/pages/user.vue b/src/client/app/mobile/views/pages/user.vue
index be696484b6..3b7b4d6c28 100644
--- a/src/client/app/mobile/views/pages/user.vue
+++ b/src/client/app/mobile/views/pages/user.vue
@@ -1,6 +1,6 @@
 <template>
 <mk-ui>
-	<span slot="header" v-if="!fetching">%fa:user% {{ user.name }}</span>
+	<span slot="header" v-if="!fetching">%fa:user% {{ user }}</span>
 	<main v-if="!fetching">
 		<header>
 			<div class="banner" :style="user.bannerUrl ? `background-image: url(${user.bannerUrl}?thumbnail&size=1024)` : ''"></div>
@@ -12,7 +12,7 @@
 					<mk-follow-button v-if="os.isSignedIn && os.i.id != user.id" :user="user"/>
 				</div>
 				<div class="title">
-					<h1>{{ user.name }}</h1>
+					<h1>{{ user }}</h1>
 					<span class="username">@{{ acct }}</span>
 					<span class="followed" v-if="user.isFollowed">%i18n:mobile.tags.mk-user.follows-you%</span>
 				</div>
@@ -61,7 +61,7 @@
 import Vue from 'vue';
 import * as age from 's-age';
 import getAcct from '../../../../../acct/render';
-import getAcct from '../../../../../acct/parse';
+import getUserName from '../../../../../renderers/get-user-name';
 import Progress from '../../../common/scripts/loading';
 import XHome from './user/home.vue';
 
@@ -82,6 +82,9 @@ export default Vue.extend({
 		},
 		age(): number {
 			return age(this.user.account.profile.birthday);
+		},
+		name() {
+			return getUserName(this.user);
 		}
 	},
 	watch: {
@@ -102,7 +105,7 @@ export default Vue.extend({
 				this.fetching = false;
 
 				Progress.done();
-				document.title = user.name + ' | Misskey';
+				document.title = this.name + ' | Misskey';
 			});
 		}
 	}
diff --git a/src/client/app/mobile/views/pages/user/home.followers-you-know.vue b/src/client/app/mobile/views/pages/user/home.followers-you-know.vue
index ffdd9f178d..1b128e2f24 100644
--- a/src/client/app/mobile/views/pages/user/home.followers-you-know.vue
+++ b/src/client/app/mobile/views/pages/user/home.followers-you-know.vue
@@ -3,7 +3,7 @@
 	<p class="initializing" v-if="fetching">%fa:spinner .pulse .fw%%i18n:mobile.tags.mk-user-overview-followers-you-know.loading%<mk-ellipsis/></p>
 	<div v-if="!fetching && users.length > 0">
 		<a v-for="user in users" :key="user.id" :href="`/@${getAcct(user)}`">
-			<img :src="`${user.avatarUrl}?thumbnail&size=64`" :alt="user.name"/>
+			<img :src="`${user.avatarUrl}?thumbnail&size=64`" :alt="getUserName(user)"/>
 		</a>
 	</div>
 	<p class="empty" v-if="!fetching && users.length == 0">%i18n:mobile.tags.mk-user-overview-followers-you-know.no-users%</p>
@@ -13,6 +13,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import getAcct from '../../../../../../acct/render';
+import getUserName from '../../../../../../renderers/get-user-name';
 
 export default Vue.extend({
 	props: ['user'],
@@ -22,6 +23,11 @@ export default Vue.extend({
 			users: []
 		};
 	},
+	computed: {
+		name() {
+			return getUserName(this.user);
+		}
+	},
 	methods: {
 		getAcct
 	},
diff --git a/src/client/app/mobile/views/widgets/profile.vue b/src/client/app/mobile/views/widgets/profile.vue
index f1d283e45a..bd257a3ff3 100644
--- a/src/client/app/mobile/views/widgets/profile.vue
+++ b/src/client/app/mobile/views/widgets/profile.vue
@@ -8,15 +8,23 @@
 			:src="`${os.i.avatarUrl}?thumbnail&size=96`"
 			alt="avatar"
 		/>
-		<router-link :class="$style.name" :to="`/@${os.i.username}`">{{ os.i.name }}</router-link>
+		<router-link :class="$style.name" :to="`/@${os.i.username}`">{{ name }}</router-link>
 	</mk-widget-container>
 </div>
 </template>
 
 <script lang="ts">
 import define from '../../../common/define-widget';
+import getUserName from '../../../../../renderers/get-user-name';
+
 export default define({
 	name: 'profile'
+}).extend({
+	computed: {
+		name() {
+			return getUserName(this.os.i);
+		}
+	}
 });
 </script>