diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9210a669ef..2d4fa47589 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@
 	- 何らの理由によりWebsocket接続が行えない環境でも快適に利用可能です
   - 従来のWebsocket接続を行うモードはリアルタイムモードとして再定義されました
 	- チャットなど、一部の機能は引き続き設定に関わらずWebsocket接続が行われます
+- Feat: 絵文字をミュート可能にする機能
+  - 絵文字（ユニコードの絵文字・カスタム絵文字）毎にミュートし、不可視化することができるようになりました
 - Enhance: メモリ使用量を軽減しました
 - Enhance: 画像の高品質なプレースホルダを無効化してパフォーマンスを向上させるオプションを追加
 - Enhance: 招待されているが参加していないルームを開いたときに、招待を承認するかどうか尋ねるように
diff --git a/locales/index.d.ts b/locales/index.d.ts
index afe99c6887..ed9d127a2e 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -5425,6 +5425,22 @@ export interface Locale extends ILocale {
      * オフにする
      */
     "turnItOff": string;
+    /**
+     * 絵文字ミュート
+     */
+    "emojiMute": string;
+    /**
+     * 絵文字ミュート解除
+     */
+    "emojiUnmute": string;
+    /**
+     * {x}をミュート
+     */
+    "muteX": ParameterizedString<"x">;
+    /**
+     * {x}のミュートを解除
+     */
+    "unmuteX": ParameterizedString<"x">;
     "_chat": {
         /**
          * まだメッセージはありません
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index f1ffc19796..e318234087 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1351,6 +1351,10 @@ advice: "アドバイス"
 realtimeMode: "リアルタイムモード"
 turnItOn: "オンにする"
 turnItOff: "オフにする"
+emojiMute: "絵文字ミュート"
+emojiUnmute: "絵文字ミュート解除"
+muteX: "{x}をミュート"
+unmuteX: "{x}のミュートを解除"
 
 _chat:
   noMessagesYet: "まだメッセージはありません"
diff --git a/packages/frontend/assets/unknown.png b/packages/frontend/assets/unknown.png
new file mode 100644
index 0000000000..d27bdfc8b3
Binary files /dev/null and b/packages/frontend/assets/unknown.png differ
diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index 9fc773b335..7d76dffa5a 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -22,6 +22,7 @@ import { computed, inject, onMounted, useTemplateRef, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import { getUnicodeEmoji } from '@@/js/emojilist.js';
 import MkCustomEmojiDetailedDialog from './MkCustomEmojiDetailedDialog.vue';
+import type { MenuItem } from '@/types/menu';
 import XDetails from '@/components/MkReactionsViewer.details.vue';
 import MkReactionIcon from '@/components/MkReactionIcon.vue';
 import * as os from '@/os.js';
@@ -36,6 +37,7 @@ import { customEmojisMap } from '@/custom-emojis.js';
 import { prefer } from '@/preferences.js';
 import { DI } from '@/di.js';
 import { noteEvents } from '@/composables/use-note-capture.js';
+import { mute as muteEmoji, unmute as unmuteEmoji, checkMuted as isEmojiMuted } from '@/utility/emoji-mute.js';
 
 const props = defineProps<{
 	noteId: Misskey.entities.Note['id'];
@@ -63,6 +65,7 @@ const canToggle = computed(() => {
 	return !props.reaction.match(/@\w/) && $i && emoji.value;
 });
 const canGetInfo = computed(() => !props.reaction.match(/@\w/) && props.reaction.includes(':'));
+const isLocalCustomEmoji = props.reaction[0] === ':' && props.reaction.includes('@.');
 
 async function toggleReaction() {
 	if (!canToggle.value) return;
@@ -139,21 +142,55 @@ async function toggleReaction() {
 }
 
 async function menu(ev) {
-	if (!canGetInfo.value) return;
+	let menuItems: MenuItem[] = [];
 
-	os.popupMenu([{
-		text: i18n.ts.info,
-		icon: 'ti ti-info-circle',
-		action: async () => {
-			const { dispose } = os.popup(MkCustomEmojiDetailedDialog, {
-				emoji: await misskeyApiGet('emoji', {
-					name: props.reaction.replace(/:/g, '').replace(/@\./, ''),
-				}),
-			}, {
-				closed: () => dispose(),
-			});
-		},
-	}], ev.currentTarget ?? ev.target);
+	if (canGetInfo.value) {
+		menuItems.push({
+			text: i18n.ts.info,
+			icon: 'ti ti-info-circle',
+			action: async () => {
+				const { dispose } = os.popup(MkCustomEmojiDetailedDialog, {
+					emoji: await misskeyApiGet('emoji', {
+						name: props.reaction.replace(/:/g, '').replace(/@\./, ''),
+					}),
+				}, {
+					closed: () => dispose(),
+				});
+			},
+		});
+	}
+
+	if (isEmojiMuted(props.reaction).value) {
+		menuItems.push({
+			text: i18n.ts.emojiUnmute,
+			icon: 'ti ti-mood-smile',
+			action: () => {
+				os.confirm({
+					type: 'question',
+					title: i18n.tsx.unmuteX({ x: isLocalCustomEmoji ? `:${emojiName.value}:` : props.reaction }),
+				}).then(({ canceled }) => {
+					if (canceled) return;
+					unmuteEmoji(props.reaction);
+				});
+			},
+		});
+	} else {
+		menuItems.push({
+			text: i18n.ts.emojiMute,
+			icon: 'ti ti-mood-off',
+			action: () => {
+				os.confirm({
+					type: 'question',
+					title: i18n.tsx.muteX({ x: isLocalCustomEmoji ? `:${emojiName.value}:` : props.reaction }),
+				}).then(({ canceled }) => {
+					if (canceled) return;
+					muteEmoji(props.reaction);
+				});
+			},
+		});
+	}
+
+	os.popupMenu(menuItems, ev.currentTarget ?? ev.target);
 }
 
 function anime() {
diff --git a/packages/frontend/src/components/global/MkCustomEmoji.vue b/packages/frontend/src/components/global/MkCustomEmoji.vue
index dda45ceaa2..ed114d8d31 100644
--- a/packages/frontend/src/components/global/MkCustomEmoji.vue
+++ b/packages/frontend/src/components/global/MkCustomEmoji.vue
@@ -5,7 +5,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <img
-	v-if="errored && fallbackToImage"
+	v-if="shouldMute"
+	:class="[$style.root, { [$style.normal]: normal, [$style.noStyle]: noStyle }]"
+	src="/client-assets/unknown.png"
+	:title="alt"
+	draggable="false"
+	style="-webkit-user-drag: none;"
+	@click="onClick"
+/>
+<img
+	v-else-if="errored && fallbackToImage"
 	:class="[$style.root, { [$style.normal]: normal, [$style.noStyle]: noStyle }]"
 	src="/client-assets/dummy.png"
 	:title="alt"
@@ -40,6 +49,7 @@ import MkCustomEmojiDetailedDialog from '@/components/MkCustomEmojiDetailedDialo
 import { $i } from '@/i.js';
 import { prefer } from '@/preferences.js';
 import { DI } from '@/di.js';
+import { makeEmojiMuteKey, mute as muteEmoji, unmute as unmuteEmoji, checkMuted as checkEmojiMuted } from '@/utility/emoji-mute';
 
 const props = defineProps<{
 	name: string;
@@ -51,12 +61,16 @@ const props = defineProps<{
 	menu?: boolean;
 	menuReaction?: boolean;
 	fallbackToImage?: boolean;
+	ignoreMuted?: boolean;
 }>();
 
 const react = inject(DI.mfmEmojiReactCallback);
 
 const customEmojiName = computed(() => (props.name[0] === ':' ? props.name.substring(1, props.name.length - 1) : props.name).replace('@.', ''));
 const isLocal = computed(() => !props.host && (customEmojiName.value.endsWith('@.') || !customEmojiName.value.includes('@')));
+const emojiCodeToMute = makeEmojiMuteKey(props);
+const isMuted = checkEmojiMuted(emojiCodeToMute);
+const shouldMute = computed(() => !props.ignoreMuted && isMuted.value);
 
 const rawUrl = computed(() => {
 	if (props.url) {
@@ -95,14 +109,18 @@ function onClick(ev: MouseEvent) {
 		menuItems.push({
 			type: 'label',
 			text: `:${props.name}:`,
-		}, {
-			text: i18n.ts.copy,
-			icon: 'ti ti-copy',
-			action: () => {
-				copyToClipboard(`:${props.name}:`);
-			},
 		});
 
+		if (isLocal.value) {
+			menuItems.push({
+				text: i18n.ts.copy,
+				icon: 'ti ti-copy',
+				action: () => {
+					copyToClipboard(`:${props.name}:`);
+				},
+			});
+		}
+
 		if (props.menuReaction && react) {
 			menuItems.push({
 				text: i18n.ts.doReaction,
@@ -113,21 +131,43 @@ function onClick(ev: MouseEvent) {
 			});
 		}
 
-		menuItems.push({
-			text: i18n.ts.info,
-			icon: 'ti ti-info-circle',
-			action: async () => {
-				const { dispose } = os.popup(MkCustomEmojiDetailedDialog, {
-					emoji: await misskeyApiGet('emoji', {
-						name: customEmojiName.value,
-					}),
-				}, {
-					closed: () => dispose(),
-				});
-			},
-		});
+		if (isLocal.value) {
+			menuItems.push({
+				type: 'divider',
+			}, {
+				text: i18n.ts.info,
+				icon: 'ti ti-info-circle',
+				action: async () => {
+					const { dispose } = os.popup(MkCustomEmojiDetailedDialog, {
+						emoji: await misskeyApiGet('emoji', {
+							name: customEmojiName.value,
+						}),
+					}, {
+						closed: () => dispose(),
+					});
+				},
+			});
+		}
 
-		if ($i?.isModerator ?? $i?.isAdmin) {
+		if (isMuted.value) {
+			menuItems.push({
+				text: i18n.ts.emojiUnmute,
+				icon: 'ti ti-mood-smile',
+				action: async () => {
+					await unmute();
+				},
+			});
+		} else {
+			menuItems.push({
+				text: i18n.ts.emojiMute,
+				icon: 'ti ti-mood-off',
+				action: async () => {
+					await mute();
+				},
+			});
+		}
+
+		if (($i?.isModerator ?? $i?.isAdmin) && isLocal.value) {
 			menuItems.push({
 				text: i18n.ts.edit,
 				icon: 'ti ti-pencil',
@@ -152,6 +192,36 @@ async function edit(name: string) {
 	});
 }
 
+function mute() {
+	const titleEmojiName = isLocal.value
+		? `:${customEmojiName.value}:`
+		: emojiCodeToMute;
+	os.confirm({
+		type: 'question',
+		title: i18n.tsx.muteX({ x: titleEmojiName }),
+	}).then(({ canceled }) => {
+		if (canceled) {
+			return;
+		}
+		muteEmoji(emojiCodeToMute);
+	});
+}
+
+function unmute() {
+	const titleEmojiName = isLocal.value
+		? `:${customEmojiName.value}:`
+		: emojiCodeToMute;
+	os.confirm({
+		type: 'question',
+		title: i18n.tsx.unmuteX({ x: titleEmojiName }),
+	}).then(({ canceled }) => {
+		if (canceled) {
+			return;
+		}
+		unmuteEmoji(emojiCodeToMute);
+	});
+}
+
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/global/MkEmoji.vue b/packages/frontend/src/components/global/MkEmoji.vue
index fa55fd888b..792f9c7d6f 100644
--- a/packages/frontend/src/components/global/MkEmoji.vue
+++ b/packages/frontend/src/components/global/MkEmoji.vue
@@ -4,7 +4,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<img v-if="!useOsNativeEmojis" :class="$style.root" :src="url" :alt="props.emoji" decoding="async" @pointerenter="computeTitle" @click="onClick"/>
+<img v-if="shouldMute" :class="$style.root" src="/client-assets/unknown.png" :alt="props.emoji" decoding="async" @pointerenter="computeTitle" @click="onClick"/>
+<img v-else-if="!useOsNativeEmojis" :class="$style.root" :src="url" :alt="props.emoji" decoding="async" @pointerenter="computeTitle" @click="onClick"/>
 <span v-else :alt="props.emoji" @pointerenter="computeTitle" @click="onClick">{{ colorizedNativeEmoji }}</span>
 </template>
 
@@ -18,11 +19,13 @@ import { copyToClipboard } from '@/utility/copy-to-clipboard.js';
 import { i18n } from '@/i18n.js';
 import { prefer } from '@/preferences.js';
 import { DI } from '@/di.js';
+import { mute as muteEmoji, unmute as unmuteEmoji, checkMuted as checkMutedEmoji } from '@/utility/emoji-mute.js';
 
 const props = defineProps<{
 	emoji: string;
 	menu?: boolean;
 	menuReaction?: boolean;
+	ignoreMuted?: boolean;
 }>();
 
 const react = inject(DI.mfmEmojiReactCallback, null);
@@ -32,12 +35,38 @@ const char2path = prefer.s.emojiStyle === 'twemoji' ? char2twemojiFilePath : cha
 const useOsNativeEmojis = computed(() => prefer.s.emojiStyle === 'native');
 const url = computed(() => char2path(props.emoji));
 const colorizedNativeEmoji = computed(() => colorizeEmoji(props.emoji));
+const isMuted = checkMutedEmoji(props.emoji);
+const shouldMute = computed(() => isMuted.value && !props.ignoreMuted);
 
 // Searching from an array with 2000 items for every emoji felt like too energy-consuming, so I decided to do it lazily on pointerenter
 function computeTitle(event: PointerEvent): void {
 	(event.target as HTMLElement).title = getEmojiName(props.emoji);
 }
 
+function mute() {
+	os.confirm({
+		type: 'question',
+		title: i18n.tsx.muteX({ x: props.emoji }),
+	}).then(({ canceled }) => {
+		if (canceled) {
+			return;
+		}
+		muteEmoji(props.emoji);
+	});
+}
+
+function unmute() {
+	os.confirm({
+		type: 'question',
+		title: i18n.tsx.unmuteX({ x: props.emoji }),
+	}).then(({ canceled }) => {
+		if (canceled) {
+			return;
+		}
+		unmuteEmoji(props.emoji);
+	});
+}
+
 function onClick(ev: MouseEvent) {
 	if (props.menu) {
 		const menuItems: MenuItem[] = [];
@@ -63,6 +92,22 @@ function onClick(ev: MouseEvent) {
 			});
 		}
 
+		menuItems.push({
+			type: 'divider',
+		}, isMuted.value ? {
+			text: i18n.ts.emojiUnmute,
+			icon: 'ti ti-mood-smile',
+			action: () => {
+				unmute();
+			},
+		} : {
+			text: i18n.ts.emojiMute,
+			icon: 'ti ti-mood-off',
+			action: () => {
+				mute();
+			},
+		});
+
 		os.popupMenu(menuItems, ev.currentTarget ?? ev.target);
 	}
 }
diff --git a/packages/frontend/src/components/global/MkMfm.ts b/packages/frontend/src/components/global/MkMfm.ts
index 337e326ccd..3ad2fda0ee 100644
--- a/packages/frontend/src/components/global/MkMfm.ts
+++ b/packages/frontend/src/components/global/MkMfm.ts
@@ -435,6 +435,8 @@ export default function (props: MfmProps, { emit }: { emit: SetupContext<MfmEven
 							normal: props.plain,
 							host: props.author.host,
 							useOriginalSize: scale >= 2.5,
+							menu: props.enableEmojiMenu,
+							menuReaction: false,
 						})];
 					}
 				}
diff --git a/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue b/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
new file mode 100644
index 0000000000..601ca7ee49
--- /dev/null
+++ b/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
@@ -0,0 +1,105 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<div :class="$style.emojis">
+	<div v-for="emoji in emojis" :key="`emojiMute-${emoji}`" :class="$style.emoji" @click="onEmojiClick($event, emoji)">
+		<MkCustomEmoji
+			v-if="emoji.startsWith(':')"
+			:name="customEmojiName(emoji)"
+			:host="customEmojiHost(emoji)"
+			:normal="true"
+			:menu="false"
+			:menuReaction="false"
+			:ignoreMuted="true"
+		/>
+		<MkEmoji
+			v-else
+			:emoji="emoji"
+			:menu="false"
+			:menuReaction="false"
+			:ignoreMuted="true"
+		></MkEmoji>
+	</div>
+</div>
+
+<MkButton primary inline @click="add"><i class="ti ti-plus"></i> {{ i18n.ts.add }}</MkButton>
+</template>
+
+<script lang="ts" setup>
+import type { MenuItem } from '@/types/menu';
+import MkButton from '@/components/MkButton.vue';
+import * as os from '@/os.js';
+import { i18n } from '@/i18n.js';
+import { prefer } from '@/preferences.js';
+import {
+	mute as muteEmoji,
+	unmute as unmuteEmoji,
+	extractCustomEmojiName as customEmojiName,
+	extractCustomEmojiHost as customEmojiHost,
+} from '@/utility/emoji-mute.js';
+
+const emojis = prefer.model('mutingEmojis');
+
+function getHTMLElement(ev: MouseEvent): HTMLElement {
+	const target = ev.currentTarget ?? ev.target;
+	return target as HTMLElement;
+}
+
+function add(ev: MouseEvent) {
+	os.pickEmoji(getHTMLElement(ev), { showPinned: false }).then((emoji) => {
+		if (emoji) {
+			muteEmoji(emoji);
+		}
+	});
+}
+
+function onEmojiClick(ev: MouseEvent, emoji: string) {
+	const menuItems : MenuItem[] = [{
+		type: 'label',
+		text: emoji,
+	}, {
+		text: i18n.ts.emojiUnmute,
+		icon: 'ti ti-mood-off',
+		action: () => unmute(emoji),
+	}];
+	os.popupMenu(menuItems, ev.currentTarget ?? ev.target);
+}
+
+function unmute(emoji: string) {
+	os.confirm({
+		type: 'question',
+		title: i18n.tsx.unmuteX({ x: emoji }),
+	}).then(({ canceled }) => {
+		if (canceled) {
+			return;
+		}
+		unmuteEmoji(emoji);
+	});
+}
+</script>
+<style module>
+.emojis {
+	display: flex;
+	flex-wrap: wrap;
+	align-items: center;
+	gap: 4px;
+
+	&:empty {
+		display: none;
+	}
+}
+
+.emoji {
+	display: inline-flex;
+	height: 42px;
+	padding: 0 6px;
+	font-size: 1.5em;
+	border-radius: 6px;
+	align-items: center;
+	justify-content: center;
+	background: var(--MI_THEME-buttonBg);
+}
+</style>
diff --git a/packages/frontend/src/pages/settings/mute-block.vue b/packages/frontend/src/pages/settings/mute-block.vue
index 7c2376249e..9b24501cce 100644
--- a/packages/frontend/src/pages/settings/mute-block.vue
+++ b/packages/frontend/src/pages/settings/mute-block.vue
@@ -49,6 +49,20 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkFolder>
 			</SearchMarker>
 
+			<SearchMarker
+				:label="i18n.ts.emojiMute"
+				:keywords="['emoji', 'mute', 'hide']"
+			>
+				<MkFolder>
+					<template #icon><i class="ti ti-mood-off"></i></template>
+					<template #label>{{ i18n.ts.emojiMute }}</template>
+
+					<div class="_gaps_m">
+						<XEmojiMute/>
+					</div>
+				</mkfolder>
+			</SearchMarker>
+
 			<SearchMarker
 				:label="i18n.ts.instanceMute"
 				:keywords="['note', 'server', 'instance', 'host', 'federation', 'mute', 'hide']"
@@ -163,6 +177,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import { ref, computed, watch } from 'vue';
+import XEmojiMute from './mute-block.emoji-mute.vue';
 import XInstanceMute from './mute-block.instance-mute.vue';
 import XWordMute from './mute-block.word-mute.vue';
 import MkPagination from '@/components/MkPagination.vue';
diff --git a/packages/frontend/src/preferences/def.ts b/packages/frontend/src/preferences/def.ts
index f6cd2c0cb9..b3af8cab87 100644
--- a/packages/frontend/src/preferences/def.ts
+++ b/packages/frontend/src/preferences/def.ts
@@ -345,6 +345,9 @@ export const PREF_DEF = {
 	plugins: {
 		default: [] as Plugin[],
 	},
+	mutingEmojis: {
+		default: [] as string[],
+	},
 
 	'sound.masterVolume': {
 		default: 0.3,
diff --git a/packages/frontend/src/utility/emoji-mute.ts b/packages/frontend/src/utility/emoji-mute.ts
new file mode 100644
index 0000000000..a058bcc242
--- /dev/null
+++ b/packages/frontend/src/utility/emoji-mute.ts
@@ -0,0 +1,61 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { computed } from 'vue';
+import { prefer } from '@/preferences.js';
+
+// custom絵文字の情報からキーを作成する
+export function makeEmojiMuteKey(props: { name: string; host?: string | null }) {
+	return props.name.startsWith(':') ? props.name : `:${props.name}${props.host ? `@${props.host}` : ''}:`;
+}
+
+export function extractCustomEmojiName (name:string) {
+	return (name[0] === ':' ? name.substring(1, name.length - 1) : name).replace('@.', '').split('@')[0];
+}
+
+export function extractCustomEmojiHost (name:string) {
+	// nameは:emojiName@host:の形式
+	// 取り出したい部分はhostなので、@以降を取り出す
+	const index = name.indexOf('@');
+	if (index === -1) {
+		return null;
+	}
+	const host = name.substring(index + 1, name.length - 1);
+	if (host === '' || host === '.') {
+		return null;
+	}
+	return host;
+}
+
+export function mute(emoji: string) {
+	const isCustomEmoji = emoji.startsWith(':') && emoji.endsWith(':');
+	const emojiMuteKey = isCustomEmoji ?
+		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
+		emoji;
+	const mutedEmojis = prefer.r.mutingEmojis.value;
+	if (!mutedEmojis.includes(emojiMuteKey)) {
+		return prefer.commit('mutingEmojis', [...mutedEmojis, emojiMuteKey]);
+	}
+	throw new Error('Emoji is already muted', { cause: `${emojiMuteKey} is Already Muted` });
+}
+
+export function unmute(emoji:string) {
+	const isCustomEmoji = emoji.startsWith(':') && emoji.endsWith(':');
+	const emojiMuteKey = isCustomEmoji ?
+		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
+		emoji;
+	const mutedEmojis = prefer.r.mutingEmojis.value;
+	console.log('unmute', emoji, emojiMuteKey);
+	console.log('mutedEmojis', mutedEmojis);
+	prefer.commit('mutingEmojis', mutedEmojis.filter((e) => e !== emojiMuteKey));
+}
+
+export function checkMuted(emoji: string) {
+	const isCustomEmoji = emoji.startsWith(':') && emoji.endsWith(':');
+	const emojiMuteKey = isCustomEmoji ?
+		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
+		emoji;
+	return computed(() => prefer.r.mutingEmojis.value.includes(emojiMuteKey));
+}
diff --git a/packages/frontend/test/init.ts b/packages/frontend/test/init.ts
index 3b6b4d581b..e38338cf95 100644
--- a/packages/frontend/test/init.ts
+++ b/packages/frontend/test/init.ts
@@ -5,6 +5,8 @@
 
 import { vi } from 'vitest';
 import createFetchMock from 'vitest-fetch-mock';
+import type { Ref } from 'vue';
+import { ref } from 'vue';
 
 const fetchMocker = createFetchMock(vi);
 fetchMocker.enableMocks();
@@ -27,13 +29,24 @@ export const preferState: Record<string, unknown> = {
 		code: false,
 	},
 
+	mutingEmojis: [],
 };
 
+export let preferReactive: Record<string, Ref<unknown>> = {};
+
+for (const key in preferState) {
+	if (preferState[key] !== undefined) {
+		preferReactive[key] = ref(preferState[key]);
+	}
+}
+
 // XXX: store somehow becomes undefined in vitest?
 vi.mock('@/preferences.js', () => {
+
 	return {
 		prefer: {
 			s: preferState,
+			r: preferReactive,
 		},
 	};
 });