diff --git a/CHANGELOG.md b/CHANGELOG.md
index 420bc87ca..9a0f9aee9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,7 @@
 - Fix: STLでフォローしていないチャンネルが取得される問題を修正
 - Fix: `hashtags/trend`にてRedisからトレンドの情報が取得できない際にInternal Server Errorになる問題を修正
 - Fix: HTLをリロードまたは遡行したとき、フォローしているチャンネルのノートが含まれない問題を修正 #11765
+- Fix: Misskey v2023.11.0以降同士の通信では、プロフィールの自己紹介欄のMFMが連合するようになりました（リモートユーザーの自己紹介欄が正しく表示されない問題を修正）
 
 ## 2023.10.2
 
diff --git a/packages/backend/src/core/activitypub/ApRendererService.ts b/packages/backend/src/core/activitypub/ApRendererService.ts
index e29bc1d09..49f9ebe3f 100644
--- a/packages/backend/src/core/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/activitypub/ApRendererService.ts
@@ -495,6 +495,7 @@ export class ApRendererService {
 			preferredUsername: user.username,
 			name: user.name,
 			summary: profile.description ? this.mfmService.toHtml(mfm.parse(profile.description)) : null,
+			_misskey_summary: profile.description,
 			icon: avatar ? this.renderImage(avatar) : null,
 			image: banner ? this.renderImage(banner) : null,
 			tag,
@@ -644,6 +645,7 @@ export class ApRendererService {
 					'_misskey_quote': 'misskey:_misskey_quote',
 					'_misskey_reaction': 'misskey:_misskey_reaction',
 					'_misskey_votes': 'misskey:_misskey_votes',
+					'_misskey_summary': 'misskey:_misskey_summary',
 					'isCat': 'misskey:isCat',
 					// vcard
 					vcard: 'http://www.w3.org/2006/vcard/ns#',
diff --git a/packages/backend/src/core/activitypub/models/ApPersonService.ts b/packages/backend/src/core/activitypub/models/ApPersonService.ts
index 47f8d7313..7164feec9 100644
--- a/packages/backend/src/core/activitypub/models/ApPersonService.ts
+++ b/packages/backend/src/core/activitypub/models/ApPersonService.ts
@@ -321,7 +321,7 @@ export class ApPersonService implements OnModuleInit {
 
 				await transactionalEntityManager.save(new MiUserProfile({
 					userId: user.id,
-					description: person.summary ? this.apMfmService.htmlToMfm(truncate(person.summary, summaryLength), person.tag) : null,
+					description: person._misskey_summary ? truncate(person._misskey_summary, summaryLength) : person.summary ? this.apMfmService.htmlToMfm(truncate(person.summary, summaryLength), person.tag) : null,
 					url,
 					fields,
 					birthday: bday?.[0] ?? null,
diff --git a/packages/backend/src/core/activitypub/type.ts b/packages/backend/src/core/activitypub/type.ts
index 16ff86e89..d9fcc9906 100644
--- a/packages/backend/src/core/activitypub/type.ts
+++ b/packages/backend/src/core/activitypub/type.ts
@@ -12,6 +12,7 @@ export interface IObject {
 	id?: string;
 	name?: string | null;
 	summary?: string;
+	_misskey_summary?: string;
 	published?: string;
 	cc?: ApObject;
 	to?: ApObject;