diff --git a/locales/index.d.ts b/locales/index.d.ts
index c1aa163f98..7d827a5e9b 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -9733,6 +9733,10 @@ export interface Locale extends ILocale {
          * 盤面に行・列番号を表示
          */
         "showBoardLabels": string;
+        /**
+         * 相手のリアクションを表示
+         */
+        "showReaction": string;
         /**
          * 石をアイコンにする
          */
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 51380e49c5..03f05f5aef 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -2591,6 +2591,7 @@ _reversi:
   allowIrregularRules: "変則許可 (完全フリー)"
   disallowIrregularRules: "変則なし"
   showBoardLabels: "盤面に行・列番号を表示"
+  showReaction: "相手のリアクションを表示"
   useAvatarAsStone: "石をアイコンにする"
 
 _offlineScreen:
diff --git a/packages/frontend/src/pages/reversi/game.board.vue b/packages/frontend/src/pages/reversi/game.board.vue
index c1c8ee04a7..569e9148ef 100644
--- a/packages/frontend/src/pages/reversi/game.board.vue
+++ b/packages/frontend/src/pages/reversi/game.board.vue
@@ -142,7 +142,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<template #label>{{ i18n.ts.options }}</template>
 			<div class="_gaps_s" style="text-align: left;">
 				<MkSwitch v-model="showBoardLabels">{{ i18n.ts._reversi.showBoardLabels }}</MkSwitch>
-        <MkSwitch v-model="showReaction">Show reaction</MkSwitch>
+				<MkSwitch v-model="showReaction">{{ i18n.ts._reversi.showReaction }}</MkSwitch>
 				<MkSwitch v-model="useAvatarAsStone">{{ i18n.ts._reversi.useAvatarAsStone }}</MkSwitch>
 			</div>
 		</MkFolder>
@@ -163,12 +163,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, onActivated, onDeactivated, onMounted, onUnmounted, ref, shallowRef, triggerRef, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import * as Reversi from 'misskey-reversi';
+import XEmojiBalloon from './game.emoji-balloon.vue';
 import type { UnicodeEmojiDef } from '@/scripts/emojilist.js';
 import MkButton from '@/components/MkButton.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkSwitch from '@/components/MkSwitch.vue';
 import MkRippleEffect from '@/components/MkRippleEffect.vue';
-import XEmojiBalloon from './game.emoji-balloon.vue';
 import { deepClone } from '@/scripts/clone.js';
 import { useInterval } from '@/scripts/use-interval.js';
 import { signinRequired } from '@/account.js';