diff --git a/src/misskey/user.ts b/src/misskey/user.ts
index 21c6be8..9338ef2 100644
--- a/src/misskey/user.ts
+++ b/src/misskey/user.ts
@@ -2,4 +2,6 @@ export type User = {
 	id: string;
 	name: string;
 	username: string;
+	isFollowing: boolean;
+	isFollowed: boolean;
 };
diff --git a/src/modules/follow/index.ts b/src/modules/follow/index.ts
new file mode 100644
index 0000000..2c4b061
--- /dev/null
+++ b/src/modules/follow/index.ts
@@ -0,0 +1,31 @@
+import 藍 from '../../ai';
+import IModule from '../../module';
+import MessageLike from '../../message-like';
+import serifs from '../../serifs';
+
+export default class FollowModule implements IModule {
+	public readonly name = 'follow';
+	private ai: 藍;
+
+	public install = (ai: 藍) => { 
+		this.ai = ai;
+	}
+
+	public onMention = (msg: MessageLike) => {
+		if (msg.text && msg.text.includes('フォロー')) {
+				if (msg.user.isFollowing) {
+					msg.reply(serifs.follow.alreadyFollowed);
+				} else if (msg.friend.love < -5) {
+					msg.reply(serifs.follow.ng);
+				} else {
+					this.ai.api("following/create", {
+						userId: msg.userId,
+					});
+					msg.reply(serifs.follow.ok);
+				}
+			return true;
+		} else {
+			return false;
+		}
+	}
+}
diff --git a/src/serifs.ts b/src/serifs.ts
index 55a52ba..9dc5665 100644
--- a/src/serifs.ts
+++ b/src/serifs.ts
@@ -260,6 +260,14 @@ export default {
 
 	server: {
 		cpu: 'サーバーの負荷が高そうです。大丈夫でしょうか...？'
+	},
+
+	follow: {
+		ok: 'フォローしました！',
+		
+		alreadyFollowed: 'えっ？既にあなたのことはフォローしていますよ！',
+		
+		ng: '嫌です...',
 	}
 };