diff --git a/packages/backend/src/core/ReactionService.ts b/packages/backend/src/core/ReactionService.ts
index 5c79ac6e05..5014156a5c 100644
--- a/packages/backend/src/core/ReactionService.ts
+++ b/packages/backend/src/core/ReactionService.ts
@@ -30,12 +30,12 @@ import { RoleService } from '@/core/RoleService.js';
 import { FeaturedService } from '@/core/FeaturedService.js';
 import { trackPromise } from '@/misc/promise-tracker.js';
 
-const FALLBACK = '❤';
+const FALLBACK = '\u2764';
 const PER_NOTE_REACTION_USER_PAIR_CACHE_MAX = 16;
 
 const legacies: Record<string, string> = {
 	'like': '👍',
-	'love': '❤', // ここに記述する場合は異体字セレクタを入れない
+	'love': '\u2764', // ハート、異体字セレクタを入れない
 	'laugh': '😆',
 	'hmm': '🤔',
 	'surprise': '😮',
@@ -120,7 +120,7 @@ export class ReactionService {
 		let reaction = _reaction ?? FALLBACK;
 
 		if (note.reactionAcceptance === 'likeOnly' || ((note.reactionAcceptance === 'likeOnlyForRemote' || note.reactionAcceptance === 'nonSensitiveOnlyForLocalLikeOnlyForRemote') && (user.host != null))) {
-			reaction = '❤️';
+			reaction = '\u2764';
 		} else if (_reaction) {
 			const custom = reaction.match(isCustomEmojiRegexp);
 			if (custom) {