diff --git a/packages/frontend/src/components/MkReactionsViewer.reaction.vue b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
index bf63f58a1e..8f2775a8c3 100644
--- a/packages/frontend/src/components/MkReactionsViewer.reaction.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.reaction.vue
@@ -147,6 +147,7 @@ async function menu(ev) {
 				os.confirm({
 					type: 'question',
 					title: i18n.tsx.unmuteX({ x: isLocalCustomEmoji ? `:${emojiName.value}:` : props.reaction }),
+					text: i18n.ts.reloadToApplySetting,
 				}).then(({ canceled }) => {
 					if (canceled) return;
 					unmuteEmoji(props.reaction);
@@ -161,6 +162,7 @@ async function menu(ev) {
 				os.confirm({
 					type: 'question',
 					title: i18n.tsx.muteX({ x: isLocalCustomEmoji ? `:${emojiName.value}:` : props.reaction }),
+					text: i18n.ts.reloadToApplySetting,
 				}).then(({ canceled }) => {
 					if (canceled) return;
 					muteEmoji(props.reaction);
diff --git a/packages/frontend/src/components/global/MkCustomEmoji.vue b/packages/frontend/src/components/global/MkCustomEmoji.vue
index ed114d8d31..dae99840ba 100644
--- a/packages/frontend/src/components/global/MkCustomEmoji.vue
+++ b/packages/frontend/src/components/global/MkCustomEmoji.vue
@@ -199,6 +199,7 @@ function mute() {
 	os.confirm({
 		type: 'question',
 		title: i18n.tsx.muteX({ x: titleEmojiName }),
+		text: i18n.ts.reloadToApplySetting,
 	}).then(({ canceled }) => {
 		if (canceled) {
 			return;
@@ -214,6 +215,7 @@ function unmute() {
 	os.confirm({
 		type: 'question',
 		title: i18n.tsx.unmuteX({ x: titleEmojiName }),
+		text: i18n.ts.reloadToApplySetting,
 	}).then(({ canceled }) => {
 		if (canceled) {
 			return;
diff --git a/packages/frontend/src/components/global/MkEmoji.vue b/packages/frontend/src/components/global/MkEmoji.vue
index 792f9c7d6f..7075ae32d2 100644
--- a/packages/frontend/src/components/global/MkEmoji.vue
+++ b/packages/frontend/src/components/global/MkEmoji.vue
@@ -47,6 +47,7 @@ function mute() {
 	os.confirm({
 		type: 'question',
 		title: i18n.tsx.muteX({ x: props.emoji }),
+		text: i18n.ts.reloadToApplySetting,
 	}).then(({ canceled }) => {
 		if (canceled) {
 			return;
@@ -59,6 +60,7 @@ function unmute() {
 	os.confirm({
 		type: 'question',
 		title: i18n.tsx.unmuteX({ x: props.emoji }),
+		text: i18n.ts.reloadToApplySetting,
 	}).then(({ canceled }) => {
 		if (canceled) {
 			return;
diff --git a/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue b/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
index 601ca7ee49..e687356f12 100644
--- a/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
+++ b/packages/frontend/src/pages/settings/mute-block.emoji-mute.vue
@@ -72,6 +72,7 @@ function unmute(emoji: string) {
 	os.confirm({
 		type: 'question',
 		title: i18n.tsx.unmuteX({ x: emoji }),
+		text: i18n.ts.reloadToApplySetting,
 	}).then(({ canceled }) => {
 		if (canceled) {
 			return;
diff --git a/packages/frontend/src/utility/emoji-mute.ts b/packages/frontend/src/utility/emoji-mute.ts
index 0693c5d473..d80cfd01ea 100644
--- a/packages/frontend/src/utility/emoji-mute.ts
+++ b/packages/frontend/src/utility/emoji-mute.ts
@@ -11,10 +11,12 @@ export function makeEmojiMuteKey(props: { name: string; host?: string | null })
 	return props.name.startsWith(':') ? props.name : `:${props.name}${props.host ? `@${props.host}` : ''}:`;
 }
 
+// custom絵文字の名前部分を取り出す
 export function extractCustomEmojiName (name:string) {
 	return (name[0] === ':' ? name.substring(1, name.length - 1) : name).replace('@.', '').split('@')[0];
 }
 
+// custom絵文字のホスト部分を取り出す
 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
@@ -29,26 +31,25 @@ export function extractCustomEmojiHost (name:string) {
 	return host;
 }
 
-export function mute(emoji: string) {
+export async 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;
+	const mutedEmojis = prefer.s.mutingEmojis;
 	if (!mutedEmojis.includes(emoji)) {
-		prefer.commit('mutingEmojis', [...mutedEmojis, emojiMuteKey]);
+		return prefer.commit('mutingEmojis', [...mutedEmojis, emojiMuteKey]);
 	}
+	throw new Error('Emoji is already muted');
 }
 
-export function unmute(emoji:string) {
+export async 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));
+	const mutedEmojis = prefer.s.mutingEmojis;
+	return prefer.commit('mutingEmojis', mutedEmojis.filter((e) => e !== emojiMuteKey));
 }
 
 export function checkMuted(emoji: string) {
@@ -56,5 +57,5 @@ export function checkMuted(emoji: string) {
 	const emojiMuteKey = isCustomEmoji ?
 		makeEmojiMuteKey({ name: extractCustomEmojiName(emoji), host: extractCustomEmojiHost(emoji) }) :
 		emoji;
-	return computed(() => prefer.r.mutingEmojis.value.includes(emojiMuteKey));
+	return computed(() => prefer.s.mutingEmojis.includes(emojiMuteKey));
 }