diff --git a/src/drive/add-file.ts b/src/api/drive/add-file.ts
similarity index 100%
rename from src/drive/add-file.ts
rename to src/api/drive/add-file.ts
diff --git a/src/drive/upload-from-url.ts b/src/api/drive/upload-from-url.ts
similarity index 100%
rename from src/drive/upload-from-url.ts
rename to src/api/drive/upload-from-url.ts
diff --git a/src/api/following/create.ts b/src/api/following/create.ts
new file mode 100644
index 0000000000..353a6c8920
--- /dev/null
+++ b/src/api/following/create.ts
@@ -0,0 +1,82 @@
+import User, { isLocalUser, isRemoteUser, pack as packUser, IUser } from '../../models/user';
+import Following from '../../models/following';
+import FollowingLog from '../../models/following-log';
+import FollowedLog from '../../models/followed-log';
+import event from '../../publishers/stream';
+import notify from '../../publishers/notify';
+import context from '../../remote/activitypub/renderer/context';
+import renderFollow from '../../remote/activitypub/renderer/follow';
+import renderAccept from '../../remote/activitypub/renderer/accept';
+import { createHttp } from '../../queue';
+
+export default async function(follower: IUser, followee: IUser, activity?) {
+	const following = await Following.insert({
+		createdAt: new Date(),
+		followerId: follower._id,
+		followeeId: followee._id
+	});
+
+	//#region Increment following count
+	User.update({ _id: follower._id }, {
+		$inc: {
+			followingCount: 1
+		}
+	});
+
+	FollowingLog.insert({
+		createdAt: following.createdAt,
+		userId: follower._id,
+		count: follower.followingCount + 1
+	});
+	//#endregion
+
+	//#region Increment followers count
+	User.update({ _id: followee._id }, {
+		$inc: {
+			followersCount: 1
+		}
+	});
+	FollowedLog.insert({
+		createdAt: following.createdAt,
+		userId: followee._id,
+		count: followee.followersCount + 1
+	});
+	//#endregion
+
+	// Publish follow event
+	if (isLocalUser(follower)) {
+		packUser(followee, follower).then(packed => event(follower._id, 'follow', packed));
+	}
+
+	// Publish followed event
+	if (isLocalUser(followee)) {
+		packUser(follower, followee).then(packed => event(followee._id, 'followed', packed)),
+
+		// 通知を作成
+		notify(followee._id, follower._id, 'follow');
+	}
+
+	if (isLocalUser(follower) && isRemoteUser(followee)) {
+		const content = renderFollow(follower, followee);
+		content['@context'] = context;
+
+		createHttp({
+			type: 'deliver',
+			user: follower,
+			content,
+			to: followee.account.inbox
+		}).save();
+	}
+
+	if (isRemoteUser(follower) && isLocalUser(followee)) {
+		const content = renderAccept(activity);
+		content['@context'] = context;
+
+		createHttp({
+			type: 'deliver',
+			user: followee,
+			content,
+			to: follower.account.inbox
+		}).save();
+	}
+}
diff --git a/src/post/create.ts b/src/api/post/create.ts
similarity index 100%
rename from src/post/create.ts
rename to src/api/post/create.ts
diff --git a/src/post/distribute.ts b/src/api/post/distribute.ts
similarity index 100%
rename from src/post/distribute.ts
rename to src/api/post/distribute.ts
diff --git a/src/post/watch.ts b/src/api/post/watch.ts
similarity index 100%
rename from src/post/watch.ts
rename to src/api/post/watch.ts
diff --git a/src/queue/processors/http/unfollow.ts b/src/queue/processors/http/unfollow.ts
index d3d5f2246f..801a3612a7 100644
--- a/src/queue/processors/http/unfollow.ts
+++ b/src/queue/processors/http/unfollow.ts
@@ -1,56 +1,63 @@
-import FollowedLog from '../../models/followed-log';
-import Following from '../../models/following';
-import FollowingLog from '../../models/following-log';
-import User, { isRemoteUser, pack as packUser } from '../../models/user';
-import stream from '../../publishers/stream';
-import renderFollow from '../../remote/activitypub/renderer/follow';
-import renderUndo from '../../remote/activitypub/renderer/undo';
-import context from '../../remote/activitypub/renderer/context';
-import request from '../../remote/request';
+import FollowedLog from '../../../models/followed-log';
+import Following from '../../../models/following';
+import FollowingLog from '../../../models/following-log';
+import User, { isLocalUser, isRemoteUser, pack as packUser } from '../../../models/user';
+import stream from '../../../publishers/stream';
+import renderFollow from '../../../remote/activitypub/renderer/follow';
+import renderUndo from '../../../remote/activitypub/renderer/undo';
+import context from '../../../remote/activitypub/renderer/context';
+import request from '../../../remote/request';
+import Logger from '../../../utils/logger';
 
 export default async ({ data }) => {
-	// Delete following
-	const following = await Following.findOneAndDelete({ _id: data.id });
+	const following = await Following.findOne({ _id: data.id });
 	if (following === null) {
 		return;
 	}
 
-	const promisedFollower = User.findOne({ _id: following.followerId });
-	const promisedFollowee = User.findOne({ _id: following.followeeId });
+	const [follower, followee] = await Promise.all([
+		User.findOne({ _id: following.followerId }),
+		User.findOne({ _id: following.followeeId })
+	]);
 
-	await Promise.all([
-		// Decrement following count
-		User.update({ _id: following.followerId }, { $inc: { followingCount: -1 } }),
-		promisedFollower.then(({ followingCount }) => FollowingLog.insert({
-			createdAt: new Date(),
-			userId: following.followerId,
-			count: followingCount - 1
-		})),
+	if (isLocalUser(follower) && isRemoteUser(followee)) {
+		const undo = renderUndo(renderFollow(follower, followee));
+		undo['@context'] = context;
 
-		// Decrement followers count
-		User.update({ _id: following.followeeId }, { $inc: { followersCount: -1 } }),
-		promisedFollowee.then(({ followersCount }) => FollowedLog.insert({
-			createdAt: new Date(),
-			userId: following.followeeId,
-			count: followersCount - 1
-		})),
+		await request(follower, followee.account.inbox, undo);
+	}
+
+	try {
+		await Promise.all([
+			// Delete following
+			Following.findOneAndDelete({ _id: data.id }),
+
+			// Decrement following count
+			User.update({ _id: follower._id }, { $inc: { followingCount: -1 } }),
+			FollowingLog.insert({
+				createdAt: new Date(),
+				userId: follower._id,
+				count: follower.followingCount - 1
+			}),
+
+			// Decrement followers count
+			User.update({ _id: followee._id }, { $inc: { followersCount: -1 } }),
+			FollowedLog.insert({
+				createdAt: new Date(),
+				userId: followee._id,
+				count: followee.followersCount - 1
+			})
+		]);
+
+		if (isLocalUser(follower)) {
+			return;
+		}
+
+		const promisedPackedUser = packUser(followee, follower);
 
 		// Publish follow event
-		Promise.all([promisedFollower, promisedFollowee]).then(async ([follower, followee]) => {
-			if (isRemoteUser(follower)) {
-				return;
-			}
-
-			const promisedPackedUser = packUser(followee, follower);
-
-			if (isRemoteUser(followee)) {
-				const undo = renderUndo(renderFollow(follower, followee));
-				undo['@context'] = context;
-
-				await request(follower, followee.account.inbox, undo);
-			}
-
-			stream(follower._id, 'unfollow', promisedPackedUser);
-		})
-	]);
+		stream(follower._id, 'unfollow', promisedPackedUser);
+	} catch (error) {
+		Logger.error(error.toString());
+	}
 };
diff --git a/src/remote/activitypub/act/create.ts b/src/remote/activitypub/act/create.ts
index c1a30ce7d0..7ee9f8dfb7 100644
--- a/src/remote/activitypub/act/create.ts
+++ b/src/remote/activitypub/act/create.ts
@@ -4,10 +4,10 @@ const createDOMPurify = require('dompurify');
 import Resolver from '../resolver';
 import DriveFile from '../../../models/drive-file';
 import Post from '../../../models/post';
-import uploadFromUrl from '../../../drive/upload-from-url';
-import createPost from '../../../post/create';
+import uploadFromUrl from '../../../api/drive/upload-from-url';
+import createPost from '../../../api/post/create';
 
-export default async (resolver: Resolver, actor, activity): Promise<void> => {
+export default async (actor, activity): Promise<void> => {
 	if ('actor' in activity && actor.account.uri !== activity.actor) {
 		throw new Error('invalid actor');
 	}
@@ -31,6 +31,8 @@ export default async (resolver: Resolver, actor, activity): Promise<void> => {
 		throw new Error(`already registered: ${uri}`);
 	}
 
+	const resolver = new Resolver();
+
 	const object = await resolver.resolve(activity);
 
 	switch (object.type) {
diff --git a/src/remote/activitypub/act/follow.ts b/src/remote/activitypub/act/follow.ts
index 23fa41df8e..dc173a0acb 100644
--- a/src/remote/activitypub/act/follow.ts
+++ b/src/remote/activitypub/act/follow.ts
@@ -1,15 +1,9 @@
-import { MongoError } from 'mongodb';
 import parseAcct from '../../../acct/parse';
-import Following, { IFollowing } from '../../../models/following';
 import User from '../../../models/user';
 import config from '../../../config';
-import queue from '../../../queue';
-import context from '../renderer/context';
-import renderAccept from '../renderer/accept';
-import request from '../../request';
-import Resolver from '../resolver';
+import follow from '../../../api/following/create';
 
-export default async (resolver: Resolver, actor, activity, distribute) => {
+export default async (actor, activity): Promise<void> => {
 	const prefix = config.url + '/@';
 	const id = activity.object.id || activity.object;
 
@@ -27,52 +21,5 @@ export default async (resolver: Resolver, actor, activity, distribute) => {
 		throw new Error();
 	}
 
-	if (!distribute) {
-		const { _id } = await Following.findOne({
-			followerId: actor._id,
-			followeeId: followee._id
-		});
-
-		return {
-			resolver,
-			object: { $ref: 'following', $id: _id }
-		};
-	}
-
-	const promisedFollowing = Following.insert({
-		createdAt: new Date(),
-		followerId: actor._id,
-		followeeId: followee._id
-	}).then(following => new Promise((resolve, reject) => {
-		queue.create('http', {
-			type: 'follow',
-			following: following._id
-		}).save(error => {
-			if (error) {
-				reject(error);
-			} else {
-				resolve(following);
-			}
-		});
-	}) as Promise<IFollowing>, async error => {
-		// duplicate key error
-		if (error instanceof MongoError && error.code === 11000) {
-			return Following.findOne({
-				followerId: actor._id,
-				followeeId: followee._id
-			});
-		}
-
-		throw error;
-	});
-
-	const accept = renderAccept(activity);
-	accept['@context'] = context;
-
-	await request(followee, actor.account.inbox, accept);
-
-	return promisedFollowing.then(({ _id }) => ({
-		resolver,
-		object: { $ref: 'following', $id: _id }
-	}));
+	await follow(actor, followee, activity);
 };