diff --git a/packages/backend/src/services/push-notification.ts b/packages/backend/src/services/push-notification.ts
index 56a8c83bf..5f1e30982 100644
--- a/packages/backend/src/services/push-notification.ts
+++ b/packages/backend/src/services/push-notification.ts
@@ -15,20 +15,21 @@ type pushNotificationsTypes = {
 	'readAllMessagingMessagesOfARoom': { userId: string } | { groupId: string };
 };
 
-// プッシュメッセージサーバーには文字数制限があるため、内容を削減します
+// Reduce the content of the push message because of the character limit
 function truncateNotification(notification: Packed<'Notification'>): any {
 	if (notification.note) {
 		return {
 			...notification,
 			note: {
 				...notification.note,
-				// textをgetNoteSummaryしたものに置き換える
+				// replace text with getNoteSummary
 				text: getNoteSummary(notification.type === 'renote' ? notification.note.renote as Packed<'Note'> : notification.note),
 
 				cw: undefined,
 				reply: undefined,
 				renote: undefined,
-				user: undefined as any, // 通知を受け取ったユーザーである場合が多いのでこれも捨てる
+				// unnecessary, since usually the user who is receiving the notification knows who they are
+				user: undefined as any,
 			},
 		};
 	}
@@ -41,7 +42,7 @@ export async function pushNotification<T extends keyof pushNotificationsTypes>(u
 
 	if (!meta.enableServiceWorker || meta.swPublicKey == null || meta.swPrivateKey == null) return;
 
-	// アプリケーションの連絡先と、サーバーサイドの鍵ペアの情報を登録
+	// Register key pair information
 	push.setVapidDetails(config.url,
 		meta.swPublicKey,
 		meta.swPrivateKey);
@@ -65,10 +66,6 @@ export async function pushNotification<T extends keyof pushNotificationsTypes>(u
 		}), {
 			proxy: config.proxy,
 		}).catch((err: any) => {
-			//swLogger.info(err.statusCode);
-			//swLogger.info(err.headers);
-			//swLogger.info(err.body);
-
 			if (err.statusCode === 410) {
 				SwSubscriptions.delete({
 					userId,