diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35162f6b0f61..5f74459c04a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,7 @@
 - 見たことのあるRenoteを省略して表示をオンのときに自分のnoteのrenoteを省略するように
 - フォルダーやファイルに対しても開発者モード使用時、IDをコピーできるように
 - 引用対象を「もっと見る」で展開した場合、「閉じる」で畳めるように
+- ノートのリアクションボタンのアイコンを変更し、削除をせずにリアクションを変更できるように
 - Fix: サーバーメトリクスが90度傾いている
 - Fix: 非ログイン時にクレデンシャルが必要なページに行くとエラーが出る問題を修正
 - Fix: sparkle内にリンクを入れるとクリック不能になる問題の修正
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 8fc5e0de5b94..28743b8cbf77 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -104,12 +104,12 @@
 				<button v-else :class="$style.footerButton" class="_button" disabled>
 					<i class="ti ti-ban"></i>
 				</button>
-				<button v-if="appearNote.myReaction == null" ref="reactButton" :class="$style.footerButton" class="_button" @mousedown="react()">
-					<i v-if="appearNote.reactionAcceptance === 'likeOnly'" class="ti ti-heart"></i>
-					<i v-else class="ti ti-plus"></i>
+				<button v-if="appearNote.reactionAcceptance === 'likeOnly' && appearNote.myReaction != null" ref="reactButton" :class="$style.footerButton" class="_button" @click="undoReact(appearNote)">
+					<i class="ti ti-heart-minus"></i>
 				</button>
-				<button v-if="appearNote.myReaction != null" ref="reactButton" :class="$style.footerButton" class="_button" @click="undoReact(appearNote)">
-					<i class="ti ti-minus"></i>
+				<button v-else ref="reactButton" :class="$style.footerButton" class="_button" @mousedown="react()">
+					<i v-if="appearNote.reactionAcceptance === 'likeOnly'" class="ti ti-heart-plus"></i>
+					<i v-else class="ti ti-mood-plus"></i>
 				</button>
 				<button v-if="defaultStore.state.showClipButtonInNoteFooter" ref="clipButton" :class="$style.footerButton" class="_button" @mousedown="clip()">
 					<i class="ti ti-paperclip"></i>
@@ -358,19 +358,43 @@ function react(viaKeyboard = false): void {
 	} else {
 		blur();
 		reactionPicker.show(reactButton.value, reaction => {
-			os.api('notes/reactions/create', {
-				noteId: appearNote.id,
-				reaction: reaction,
-			});
-			if (appearNote.text && appearNote.text.length > 100 && (Date.now() - new Date(appearNote.createdAt).getTime() < 1000 * 3)) {
-				claimAchievement('reactWithoutRead');
-			}
+			toggleReaction(reaction);
 		}, () => {
 			focus();
 		});
 	}
 }
 
+async function toggleReaction(reaction) {
+	const oldReaction = note.myReaction;
+	if (oldReaction) {
+		const confirm = await os.confirm({
+			type: 'warning',
+			text: oldReaction !== reaction ? i18n.ts.changeReactionConfirm : i18n.ts.cancelReactionConfirm,
+		});
+		if (confirm.canceled) return;
+
+		os.api('notes/reactions/delete', {
+			noteId: note.id,
+		}).then(() => {
+			if (oldReaction !== reaction) {
+				os.api('notes/reactions/create', {
+					noteId: note.id,
+					reaction: reaction,
+				});
+			}
+		});
+	} else {
+		os.api('notes/reactions/create', {
+			noteId: appearNote.id,
+			reaction: reaction,
+		});
+	}
+	if (appearNote.text && appearNote.text.length > 100 && (Date.now() - new Date(appearNote.createdAt).getTime() < 1000 * 3)) {
+		claimAchievement('reactWithoutRead');
+	}
+}
+
 function undoReact(note): void {
 	const oldReaction = note.myReaction;
 	if (!oldReaction) return;
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 1f8a36b8de56..9842a57ce0b4 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -105,12 +105,12 @@
 			<button v-else class="_button" :class="$style.noteFooterButton" disabled>
 				<i class="ti ti-ban"></i>
 			</button>
-			<button v-if="appearNote.myReaction == null" ref="reactButton" :class="$style.noteFooterButton" class="_button" @mousedown="react()">
-				<i v-if="appearNote.reactionAcceptance === 'likeOnly'" class="ti ti-heart"></i>
-				<i v-else class="ti ti-plus"></i>
+			<button v-if="appearNote.reactionAcceptance === 'likeOnly' && appearNote.myReaction != null" ref="reactButton" :class="$style.noteFooterButton" class="_button" @click="undoReact(appearNote)">
+				<i class="ti ti-heart-minus"></i>
 			</button>
-			<button v-if="appearNote.myReaction != null" ref="reactButton" class="_button" :class="[$style.noteFooterButton, $style.reacted]" @click="undoReact(appearNote)">
-				<i class="ti ti-minus"></i>
+			<button v-else ref="reactButton" :class="$style.noteFooterButton" class="_button" @mousedown="react()">
+				<i v-if="appearNote.reactionAcceptance === 'likeOnly'" class="ti ti-heart-plus"></i>
+				<i v-else class="ti ti-mood-plus"></i>
 			</button>
 			<button v-if="defaultStore.state.showClipButtonInNoteFooter" ref="clipButton" class="_button" :class="$style.noteFooterButton" @mousedown="clip()">
 				<i class="ti ti-paperclip"></i>
@@ -344,19 +344,43 @@ function react(viaKeyboard = false): void {
 	} else {
 		blur();
 		reactionPicker.show(reactButton.value, reaction => {
-			os.api('notes/reactions/create', {
-				noteId: appearNote.id,
-				reaction: reaction,
-			});
-			if (appearNote.text && appearNote.text.length > 100 && (Date.now() - new Date(appearNote.createdAt).getTime() < 1000 * 3)) {
-				claimAchievement('reactWithoutRead');
-			}
+			toggleReaction(reaction);
 		}, () => {
 			focus();
 		});
 	}
 }
 
+async function toggleReaction(reaction) {
+	const oldReaction = note.myReaction;
+	if (oldReaction) {
+		const confirm = await os.confirm({
+			type: 'warning',
+			text: oldReaction !== reaction ? i18n.ts.changeReactionConfirm : i18n.ts.cancelReactionConfirm,
+		});
+		if (confirm.canceled) return;
+
+		os.api('notes/reactions/delete', {
+			noteId: note.id,
+		}).then(() => {
+			if (oldReaction !== reaction) {
+				os.api('notes/reactions/create', {
+					noteId: note.id,
+					reaction: reaction,
+				});
+			}
+		});
+	} else {
+		os.api('notes/reactions/create', {
+			noteId: appearNote.id,
+			reaction: reaction,
+		});
+	}
+	if (appearNote.text && appearNote.text.length > 100 && (Date.now() - new Date(appearNote.createdAt).getTime() < 1000 * 3)) {
+		claimAchievement('reactWithoutRead');
+	}
+}
+
 function undoReact(note): void {
 	const oldReaction = note.myReaction;
 	if (!oldReaction) return;