diff --git a/src/client/app/admin/views/index.vue b/src/client/app/admin/views/index.vue
index 3cd8ee7a2..3da13ad21 100644
--- a/src/client/app/admin/views/index.vue
+++ b/src/client/app/admin/views/index.vue
@@ -15,7 +15,7 @@
 		</div>
 		<div class="me">
 			<img class="avatar" :src="$store.state.i.avatarUrl" alt="avatar"/>
-			<p class="name">{{ $store.state.i | userName }}</p>
+			<p class="name"><mk-user-name :user="$store.state.i"/></p>
 		</div>
 		<ul>
 			<li @click="nav('dashboard')" :class="{ active: page == 'dashboard' }"><fa icon="home" fixed-width/>{{ $t('dashboard') }}</li>
diff --git a/src/client/app/admin/views/users.vue b/src/client/app/admin/views/users.vue
index ac2991c51..e50e33bf5 100644
--- a/src/client/app/admin/views/users.vue
+++ b/src/client/app/admin/views/users.vue
@@ -46,7 +46,7 @@
 				</div>
 				<div>
 					<header>
-						<b>{{ user | userName }}</b>
+						<b><mk-user-name :user="user"/></b>
 						<span class="username">@{{ user | acct }}</span>
 					</header>
 					<div>
diff --git a/src/client/app/common/views/components/games/reversi/reversi.game.vue b/src/client/app/common/views/components/games/reversi/reversi.game.vue
index 758d02af3..c5619f905 100644
--- a/src/client/app/common/views/components/games/reversi/reversi.game.vue
+++ b/src/client/app/common/views/components/games/reversi/reversi.game.vue
@@ -1,7 +1,7 @@
 <template>
 <div class="xqnhankfuuilcwvhgsopeqncafzsquya">
 	<button class="go-index" v-if="selfNav" @click="goIndex"><fa icon="arrow-left"/></button>
-	<header><b><router-link :to="blackUser | userPage">{{ blackUser | userName }}</router-link></b>({{ $t('@.reversi.black') }}) vs <b><router-link :to="whiteUser | userPage">{{ whiteUser | userName }}</router-link></b>({{ $t('@.reversi.white') }})</header>
+	<header><b><router-link :to="blackUser | userPage"><mk-user-name :user="blackUser"/></router-link></b>({{ $t('@.reversi.black') }}) vs <b><router-link :to="whiteUser | userPage"><mk-user-name :user="whiteUser"/></router-link></b>({{ $t('@.reversi.white') }})</header>
 
 	<div style="overflow: hidden; line-height: 28px;">
 		<p class="turn" v-if="!iAmPlayer && !game.isEnded">{{ $t('@.reversi.turn-of', { name: $options.filters.userName(turnUser) }) }}<mk-ellipsis/></p>
@@ -10,7 +10,7 @@
 		<p class="turn2" v-if="iAmPlayer && !game.isEnded && isMyTurn" v-animate-css="{ classes: 'tada', iteration: 'infinite' }">{{ $t('@.reversi.my-turn') }}</p>
 		<p class="result" v-if="game.isEnded && logPos == logs.length">
 			<template v-if="game.winner">
-				<span>{{ $t('@.reversi.won', { name: $options.filters.userName(game.winner) }) }}</span>
+				<misskey-flavored-markdown :text="$t('@.reversi.won', { name: $options.filters.userName(game.winner) })" :shouldBreak="false" :plainText="true" :custom-emojis="game.winner.emojis"/>
 				<span v-if="game.surrendered != null"> ({{ $t('surrendered') }})</span>
 			</template>
 			<template v-else>{{ $t('@.reversi.drawn') }}</template>
diff --git a/src/client/app/common/views/components/games/reversi/reversi.index.vue b/src/client/app/common/views/components/games/reversi/reversi.index.vue
index 07472998d..834702fda 100644
--- a/src/client/app/common/views/components/games/reversi/reversi.index.vue
+++ b/src/client/app/common/views/components/games/reversi/reversi.index.vue
@@ -19,7 +19,7 @@
 		<h2>{{ $t('invitations') }}</h2>
 		<div class="invitation" v-for="i in invitations" tabindex="-1" @click="accept(i)">
 			<mk-avatar class="avatar" :user="i.parent"/>
-			<span class="name"><b>{{ i.parent | userName }}</b></span>
+			<span class="name"><b><mk-user-name :user="i.parent"/></b></span>
 			<span class="username">@{{ i.parent.username }}</span>
 			<mk-time :time="i.createdAt"/>
 		</div>
@@ -29,7 +29,7 @@
 		<a class="game" v-for="g in myGames" tabindex="-1" @click.prevent="go(g)" :href="`/reversi/${g.id}`">
 			<mk-avatar class="avatar" :user="g.user1"/>
 			<mk-avatar class="avatar" :user="g.user2"/>
-			<span><b>{{ g.user1 | userName }}</b> vs <b>{{ g.user2 | userName }}</b></span>
+			<span><b><mk-user-name :user="g.user1"/></b> vs <b><mk-user-name :user="g.user2"/></b></span>
 			<span class="state">{{ g.isEnded ? $t('game-state.ended') : $t('game-state.playing') }}</span>
 			<mk-time :time="g.createdAt" />
 		</a>
@@ -39,7 +39,7 @@
 		<a class="game" v-for="g in games" tabindex="-1" @click.prevent="go(g)" :href="`/reversi/${g.id}`">
 			<mk-avatar class="avatar" :user="g.user1"/>
 			<mk-avatar class="avatar" :user="g.user2"/>
-			<span><b>{{ g.user1 | userName }}</b> vs <b>{{ g.user2 | userName }}</b></span>
+			<span><b><mk-user-name :user="g.user1"/></b> vs <b><mk-user-name :user="g.user2"/></b></span>
 			<span class="state">{{ g.isEnded ? $t('game-state.ended') : $t('game-state.playing') }}</span>
 			<mk-time :time="g.createdAt" />
 		</a>
diff --git a/src/client/app/common/views/components/games/reversi/reversi.room.vue b/src/client/app/common/views/components/games/reversi/reversi.room.vue
index a81d92c70..fdbdf9b9e 100644
--- a/src/client/app/common/views/components/games/reversi/reversi.room.vue
+++ b/src/client/app/common/views/components/games/reversi/reversi.room.vue
@@ -1,6 +1,6 @@
 <template>
 <div class="urbixznjwwuukfsckrwzwsqzsxornqij">
-	<header><b>{{ game.user1 | userName }}</b> vs <b>{{ game.user2 | userName }}</b></header>
+	<header><b><mk-user-name :user="game.user1"/></b> vs <b><mk-user-name :user="game.user2"/></b></header>
 
 	<div>
 		<p>{{ $t('settings-of-the-game') }}</p>
@@ -36,8 +36,8 @@
 
 			<div>
 				<form-radio v-model="game.settings.bw" value="random" @change="updateSettings">{{ $t('random') }}</form-radio>
-				<form-radio v-model="game.settings.bw" :value="1" @change="updateSettings">{{ this.$t('black-is').split('{}')[0] }}<b>{{ game.user1 | userName }}</b>{{ this.$t('black-is').split('{}')[1] }}</form-radio>
-				<form-radio v-model="game.settings.bw" :value="2" @change="updateSettings">{{ this.$t('black-is').split('{}')[0] }}<b>{{ game.user2 | userName }}</b>{{ this.$t('black-is').split('{}')[1] }}</form-radio>
+				<form-radio v-model="game.settings.bw" :value="1" @change="updateSettings">{{ this.$t('black-is').split('{}')[0] }}<b><mk-user-name :user="game.user1"/></b>{{ this.$t('black-is').split('{}')[1] }}</form-radio>
+				<form-radio v-model="game.settings.bw" :value="2" @change="updateSettings">{{ this.$t('black-is').split('{}')[0] }}<b><mk-user-name :user="game.user2"/></b>{{ this.$t('black-is').split('{}')[1] }}</form-radio>
 			</div>
 		</div>
 
diff --git a/src/client/app/common/views/components/games/reversi/reversi.vue b/src/client/app/common/views/components/games/reversi/reversi.vue
index 8c555a6c4..b6803cd7f 100644
--- a/src/client/app/common/views/components/games/reversi/reversi.vue
+++ b/src/client/app/common/views/components/games/reversi/reversi.vue
@@ -4,7 +4,7 @@
 		<x-gameroom :game="game" :self-nav="selfNav" @go-index="goIndex"/>
 	</div>
 	<div class="matching" v-else-if="matching">
-		<h1>{{ this.$t('matching.waiting-for').split('{}')[0] }}<b>{{ matching | userName }}</b>{{ this.$t('matching.waiting-for').split('{}')[1] }}<mk-ellipsis/></h1>
+		<h1>{{ this.$t('matching.waiting-for').split('{}')[0] }}<b><mk-user-name :user="matching"/></b>{{ this.$t('matching.waiting-for').split('{}')[1] }}<mk-ellipsis/></h1>
 		<div class="cancel">
 			<form-button round @click="cancel">{{ $t('matching.cancel') }}</form-button>
 		</div>
diff --git a/src/client/app/common/views/components/messaging.vue b/src/client/app/common/views/components/messaging.vue
index 7016695e2..f8d0623b9 100644
--- a/src/client/app/common/views/components/messaging.vue
+++ b/src/client/app/common/views/components/messaging.vue
@@ -14,7 +14,7 @@
 					tabindex="-1"
 				>
 					<mk-avatar class="avatar" :user="user"/>
-					<span class="name">{{ user | userName }}</span>
+					<span class="name"><mk-user-name :user="user"/></span>
 					<span class="username">@{{ user | acct }}</span>
 				</li>
 			</ol>
@@ -33,7 +33,7 @@
 				<div>
 					<mk-avatar class="avatar" :user="isMe(message) ? message.recipient : message.user"/>
 					<header>
-						<span class="name">{{ isMe(message) ? message.recipient : message.user | userName }}</span>
+						<span class="name"><mk-user-name :user="isMe(message) ? message.recipient : message.user"/></span>
 						<span class="username">@{{ isMe(message) ? message.recipient : message.user | acct }}</span>
 						<mk-time :time="message.createdAt"/>
 					</header>
diff --git a/src/client/app/common/views/components/mute-and-block.vue b/src/client/app/common/views/components/mute-and-block.vue
index 1bd99d1c4..97e992ace 100644
--- a/src/client/app/common/views/components/mute-and-block.vue
+++ b/src/client/app/common/views/components/mute-and-block.vue
@@ -7,7 +7,7 @@
 		<ui-info v-if="!muteFetching && mute.length == 0">{{ $t('no-muted-users') }}</ui-info>
 		<div class="users" v-if="mute.length != 0">
 			<div v-for="user in mute" :key="user.id">
-				<p><b>{{ user | userName }}</b> @{{ user | acct }}</p>
+				<p><b><mk-user-name :user="user"/></b> @{{ user | acct }}</p>
 			</div>
 		</div>
 	</section>
@@ -17,7 +17,7 @@
 		<ui-info v-if="!blockFetching && block.length == 0">{{ $t('no-blocked-users') }}</ui-info>
 		<div class="users" v-if="block.length != 0">
 			<div v-for="user in block" :key="user.id">
-				<p><b>{{ user | userName }}</b> @{{ user | acct }}</p>
+				<p><b><mk-user-name :user="user"/></b> @{{ user | acct }}</p>
 			</div>
 		</div>
 	</section>
diff --git a/src/client/app/desktop/views/components/messaging-room-window.vue b/src/client/app/desktop/views/components/messaging-room-window.vue
index c1d310b8d..a7db1bca6 100644
--- a/src/client/app/desktop/views/components/messaging-room-window.vue
+++ b/src/client/app/desktop/views/components/messaging-room-window.vue
@@ -1,6 +1,6 @@
 <template>
 <mk-window ref="window" width="500px" height="560px" :popout-url="popout" @closed="destroyDom">
-	<span slot="header" :class="$style.header"><fa icon="comments"/>{{ $t('title') }} {{ user | userName }}</span>
+	<span slot="header" :class="$style.header"><fa icon="comments"/>{{ $t('title') }} <mk-user-name :user="user"/></span>
 	<x-messaging-room :user="user" :class="$style.content"/>
 </mk-window>
 </template>
diff --git a/src/client/app/mobile/views/pages/messaging-room.vue b/src/client/app/mobile/views/pages/messaging-room.vue
index 648a5d72e..7c18dbfed 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"><span style="margin-right:4px;"><fa :icon="['far', 'comments']"/></span>{{ user | userName }}</template>
+		<template v-if="user"><span style="margin-right:4px;"><fa :icon="['far', 'comments']"/></span><mk-user-name :user="user"/></template>
 		<template v-else><mk-ellipsis/></template>
 	</span>
 	<x-messaging-room v-if="!fetching" :user="user" :is-naked="true"/>