diff --git a/src/misc/nyaize.ts b/src/misc/nyaize.ts
index 6ee3b68477..500d1db2cb 100644
--- a/src/misc/nyaize.ts
+++ b/src/misc/nyaize.ts
@@ -3,7 +3,9 @@ export function nyaize(text: string): string {
 		// ja-JP
 		.replace(/な/g, 'にゃ').replace(/ナ/g, 'ニャ').replace(/ﾅ/g, 'ﾆｬ')
 		// en-US
-		.replace(/morning/gi, 'mornyan').replace(/everyone/gi, 'everynyan')
+		.replace(/(?<=n)a/gi, x => x === 'A' ? 'YA' : 'ya')
+		.replace(/(?<=morn)ing/gi, x => x === 'ING' ? 'YAN' : 'yan')
+		.replace(/(?<=every)one/gi, x => x === 'ONE' ? 'NYAN' : 'nyan')
 		// ko-KR
 		.replace(/[나-낳]/g, match => String.fromCharCode(
 			match.charCodeAt(0)! + '냐'.charCodeAt(0) - '나'.charCodeAt(0)
diff --git a/src/remote/activitypub/models/person.ts b/src/remote/activitypub/models/person.ts
index 4b8fa9a551..a3093786d0 100644
--- a/src/remote/activitypub/models/person.ts
+++ b/src/remote/activitypub/models/person.ts
@@ -138,6 +138,8 @@ export async function createPerson(uri: string, resolver?: Resolver): Promise<Us
 
 	const isBot = object.type === 'Service';
 
+	const bday = person['vcard:bday']?.match(/^\d{4}-\d{2}-\d{2}/);
+
 	// Create user
 	let user: IRemoteUser;
 	try {
@@ -168,6 +170,8 @@ export async function createPerson(uri: string, resolver?: Resolver): Promise<Us
 				description: person.summary ? htmlToMfm(person.summary, person.tag) : null,
 				url: getOneApHrefNullable(person.url),
 				fields,
+				birthday: bday ? bday[0] : null,
+				location: person['vcard:Address'] || null,
 				userHost: host
 			}));
 
@@ -319,6 +323,8 @@ export async function updatePerson(uri: string, resolver?: Resolver | null, hint
 
 	const tags = extractApHashtags(person.tag).map(tag => tag.toLowerCase()).splice(0, 32);
 
+	const bday = person['vcard:bday']?.match(/^\d{4}-\d{2}-\d{2}/);
+
 	const updates = {
 		lastFetchedAt: new Date(),
 		inbox: person.inbox,
@@ -356,6 +362,8 @@ export async function updatePerson(uri: string, resolver?: Resolver | null, hint
 		url: getOneApHrefNullable(person.url),
 		fields,
 		description: person.summary ? htmlToMfm(person.summary, person.tag) : null,
+		birthday: bday ? bday[0] : null,
+		location: person['vcard:Address'] || null,
 	});
 
 	// ハッシュタグ更新
diff --git a/src/remote/activitypub/renderer/index.ts b/src/remote/activitypub/renderer/index.ts
index e84a7d90ac..cf0fd8d85a 100644
--- a/src/remote/activitypub/renderer/index.ts
+++ b/src/remote/activitypub/renderer/index.ts
@@ -49,6 +49,9 @@ export const attachLdSignature = async (activity: any, user: ILocalUser): Promis
 		'_misskey_reaction': 'misskey:_misskey_reaction',
 		'_misskey_votes': 'misskey:_misskey_votes',
 		'_misskey_talk': 'misskey:_misskey_talk',
+		'isCat': 'misskey:isCat',
+		// vcard
+		vcard: 'http://www.w3.org/2006/vcard/ns#',
 	};
 
 	activity['@context'].push(obj);
diff --git a/src/remote/activitypub/renderer/person.ts b/src/remote/activitypub/renderer/person.ts
index bc8a462d2e..87dca19acd 100644
--- a/src/remote/activitypub/renderer/person.ts
+++ b/src/remote/activitypub/renderer/person.ts
@@ -52,7 +52,7 @@ export async function renderPerson(user: ILocalUser) {
 
 	const keypair = await UserKeypairs.findOne(user.id).then(ensure);
 
-	return {
+	const person = {
 		type: isSystem ? 'Application' : user.isBot ? 'Service' : 'Person',
 		id,
 		inbox: `${id}/inbox`,
@@ -73,5 +73,15 @@ export async function renderPerson(user: ILocalUser) {
 		publicKey: renderKey(user, keypair, `#main-key`),
 		isCat: user.isCat,
 		attachment: attachment.length ? attachment : undefined
-	};
+	} as any;
+
+	if (profile?.birthday) {
+		person['vcard:bday'] = profile.birthday;
+	}
+
+	if (profile?.location) {
+		person['vcard:Address'] = profile.location;
+	}
+
+	return person;
 }
diff --git a/src/remote/activitypub/type.ts b/src/remote/activitypub/type.ts
index d47a0967f9..0533506cdc 100644
--- a/src/remote/activitypub/type.ts
+++ b/src/remote/activitypub/type.ts
@@ -140,6 +140,8 @@ export interface IPerson extends IObject {
 	endpoints?: {
 		sharedInbox?: string;
 	};
+	'vcard:bday'?: string;
+	'vcard:Address'?: string;
 }
 
 export const isCollection = (object: IObject): object is ICollection =>