diff --git a/tools/migration/node.2018-03-28.username.js b/tools/migration/nighthike/1.js
similarity index 86%
rename from tools/migration/node.2018-03-28.username.js
rename to tools/migration/nighthike/1.js
index 222215210..d7e011c5b 100644
--- a/tools/migration/node.2018-03-28.username.js
+++ b/tools/migration/nighthike/1.js
@@ -1,7 +1,6 @@
 // for Node.js interpret
 
-const { default: User } = require('../../built/api/models/user');
-const { generate } = require('../../built/crypto_key');
+const { default: User } = require('../../../built/api/models/user');
 const { default: zip } = require('@prezzemolo/zip')
 
 const migrate = async (user) => {
diff --git a/tools/migration/node.2018-03-28.appname.js b/tools/migration/nighthike/2.js
similarity index 86%
rename from tools/migration/node.2018-03-28.appname.js
rename to tools/migration/nighthike/2.js
index 9f16e4720..8fb5bbb08 100644
--- a/tools/migration/node.2018-03-28.appname.js
+++ b/tools/migration/nighthike/2.js
@@ -1,7 +1,6 @@
 // for Node.js interpret
 
-const { default: App } = require('../../built/api/models/app');
-const { generate } = require('../../built/crypto_key');
+const { default: App } = require('../../../built/api/models/app');
 const { default: zip } = require('@prezzemolo/zip')
 
 const migrate = async (app) => {
diff --git a/tools/migration/nighthike/3.js b/tools/migration/nighthike/3.js
new file mode 100644
index 000000000..cc0603d9e
--- /dev/null
+++ b/tools/migration/nighthike/3.js
@@ -0,0 +1,73 @@
+// for Node.js interpret
+
+const { default: User } = require('../../../built/api/models/user');
+const { generate } = require('../../../built/crypto_key');
+const { default: zip } = require('@prezzemolo/zip')
+
+const migrate = async (user) => {
+	const result = await User.update(user._id, {
+		$unset: {
+			email: '',
+			links: '',
+			password: '',
+			token: '',
+			twitter: '',
+			line: '',
+			profile: '',
+			last_used_at: '',
+			is_bot: '',
+			is_pro: '',
+			two_factor_secret: '',
+			two_factor_enabled: '',
+			client_settings: '',
+			settings: ''
+		},
+		$set: {
+			host: null,
+			host_lower: null,
+			account: {
+				email: user.email,
+				links: user.links,
+				password: user.password,
+				token: user.token,
+				twitter: user.twitter,
+				line: user.line,
+				profile: user.profile,
+				last_used_at: user.last_used_at,
+				is_bot: user.is_bot,
+				is_pro: user.is_pro,
+				two_factor_secret: user.two_factor_secret,
+				two_factor_enabled: user.two_factor_enabled,
+				client_settings: user.client_settings,
+				settings: user.settings,
+				keypair: generate()
+			}
+		}
+	});
+	return result.ok === 1;
+}
+
+async function main() {
+	const count = await User.count({});
+
+	const dop = Number.parseInt(process.argv[2]) || 5
+	const idop = ((count - (count % dop)) / dop) + 1
+
+	return zip(
+		1,
+		async (time) => {
+			console.log(`${time} / ${idop}`)
+			const doc = await User.find({}, {
+				limit: dop, skip: time * dop
+			})
+			return Promise.all(doc.map(migrate))
+		},
+		idop
+	).then(a => {
+		const rv = []
+		a.forEach(e => rv.push(...e))
+		return rv
+	})
+}
+
+main().then(console.dir).catch(console.error)
diff --git a/tools/migration/shell.camel-case.js b/tools/migration/nighthike/4.js
similarity index 100%
rename from tools/migration/shell.camel-case.js
rename to tools/migration/nighthike/4.js
diff --git a/tools/migration/node.1522066477.user-account-keypair.js b/tools/migration/node.1522066477.user-account-keypair.js
deleted file mode 100644
index c413e3db1..000000000
--- a/tools/migration/node.1522066477.user-account-keypair.js
+++ /dev/null
@@ -1,39 +0,0 @@
-// for Node.js interpret
-
-const { default: User } = require('../../built/api/models/user');
-const { generate } = require('../../built/crypto_key');
-const { default: zip } = require('@prezzemolo/zip')
-
-const migrate = async (user) => {
-	const result = await User.update(user._id, {
-		$set: {
-			'account.keypair': generate()
-		}
-	});
-	return result.ok === 1;
-}
-
-async function main() {
-	const count = await User.count({});
-
-	const dop = Number.parseInt(process.argv[2]) || 5
-	const idop = ((count - (count % dop)) / dop) + 1
-
-	return zip(
-		1,
-		async (time) => {
-			console.log(`${time} / ${idop}`)
-			const doc = await User.find({}, {
-				limit: dop, skip: time * dop
-			})
-			return Promise.all(doc.map(migrate))
-		},
-		idop
-	).then(a => {
-		const rv = []
-		a.forEach(e => rv.push(...e))
-		return rv
-	})
-}
-
-main().then(console.dir).catch(console.error)
diff --git a/tools/migration/shell.1522038492.user-account.js b/tools/migration/shell.1522038492.user-account.js
deleted file mode 100644
index 056c29e8e..000000000
--- a/tools/migration/shell.1522038492.user-account.js
+++ /dev/null
@@ -1,41 +0,0 @@
-db.users.dropIndex({ token: 1 });
-
-db.users.find({}).forEach(function(user) {
-	print(user._id);
-	db.users.update({ _id: user._id }, {
-		$unset: {
-			email: '',
-			links: '',
-			password: '',
-			token: '',
-			twitter: '',
-			line: '',
-			profile: '',
-			last_used_at: '',
-			is_bot: '',
-			is_pro: '',
-			two_factor_secret: '',
-			two_factor_enabled: '',
-			client_settings: '',
-			settings: ''
-		},
-		$set: {
-			account: {
-				email: user.email,
-				links: user.links,
-				password: user.password,
-				token: user.token,
-				twitter: user.twitter,
-				line: user.line,
-				profile: user.profile,
-				last_used_at: user.last_used_at,
-				is_bot: user.is_bot,
-				is_pro: user.is_pro,
-				two_factor_secret: user.two_factor_secret,
-				two_factor_enabled: user.two_factor_enabled,
-				client_settings: user.client_settings,
-				settings: user.settings
-			}
-		}
-	}, false, false);
-});
diff --git a/tools/migration/shell.1522116709.user-host.js b/tools/migration/shell.1522116709.user-host.js
deleted file mode 100644
index b354709a6..000000000
--- a/tools/migration/shell.1522116709.user-host.js
+++ /dev/null
@@ -1 +0,0 @@
-db.users.update({ }, { $set: { host: null } }, { multi: true });
diff --git a/tools/migration/shell.1522116710.user-host_lower.js b/tools/migration/shell.1522116710.user-host_lower.js
deleted file mode 100644
index 31ec6c468..000000000
--- a/tools/migration/shell.1522116710.user-host_lower.js
+++ /dev/null
@@ -1 +0,0 @@
-db.users.update({ }, { $set: { host_lower: null } }, { multi: true });