diff --git a/CHANGELOG.md b/CHANGELOG.md
index b449a1b91..d6861e51f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 ### Server
 - Fix: `admin/emoji/update`エンドポイントのidのみ指定した時不正なエラーが発生するバグを修正
+- Fix: RBT有効時、リノートのリアクションが反映されない問題を修正
 
 ## 2024.10.0
 
diff --git a/packages/backend/src/core/entities/NoteEntityService.ts b/packages/backend/src/core/entities/NoteEntityService.ts
index a1f07a1f4..71e783dc7 100644
--- a/packages/backend/src/core/entities/NoteEntityService.ts
+++ b/packages/backend/src/core/entities/NoteEntityService.ts
@@ -22,6 +22,29 @@ import type { ReactionService } from '../ReactionService.js';
 import type { UserEntityService } from './UserEntityService.js';
 import type { DriveFileEntityService } from './DriveFileEntityService.js';
 
+function isPureRenote(note: MiNote): note is MiNote & { renoteId: MiNote['id']; renote: MiNote } {
+	return (
+		note.renote != null &&
+		note.reply == null &&
+		note.text == null &&
+		note.cw == null &&
+		(note.fileIds == null || note.fileIds.length === 0) &&
+		!note.hasPoll
+	);
+}
+
+function getAppearNoteIds(notes: MiNote[]): Set<string> {
+	const appearNoteIds = new Set<string>();
+	for (const note of notes) {
+		if (isPureRenote(note)) {
+			appearNoteIds.add(note.renoteId);
+		} else {
+			appearNoteIds.add(note.id);
+		}
+	}
+	return appearNoteIds;
+}
+
 @Injectable()
 export class NoteEntityService implements OnModuleInit {
 	private userEntityService: UserEntityService;
@@ -423,7 +446,7 @@ export class NoteEntityService implements OnModuleInit {
 	) {
 		if (notes.length === 0) return [];
 
-		const bufferedReactions = this.meta.enableReactionsBuffering ? await this.reactionsBufferingService.getMany(notes.map(x => x.id)) : null;
+		const bufferedReactions = this.meta.enableReactionsBuffering ? await this.reactionsBufferingService.getMany([...getAppearNoteIds(notes)]) : null;
 
 		const meId = me ? me.id : null;
 		const myReactionsMap = new Map<MiNote['id'], string | null>();
@@ -434,7 +457,7 @@ export class NoteEntityService implements OnModuleInit {
 			const oldId = this.idService.gen(Date.now() - 2000);
 
 			for (const note of notes) {
-				if (note.renote && (note.text == null && note.fileIds.length === 0)) { // pure renote
+				if (isPureRenote(note)) {
 					const reactionsCount = Object.values(this.reactionsBufferingService.mergeReactions(note.renote.reactions, bufferedReactions?.get(note.renote.id)?.deltas ?? {})).reduce((a, b) => a + b, 0);
 					if (reactionsCount === 0) {
 						myReactionsMap.set(note.renote.id, null);