diff --git a/packages/frontend/src/langs/en-US.json b/packages/frontend/src/langs/en-US.json
index 58a9748..d213e02 100644
--- a/packages/frontend/src/langs/en-US.json
+++ b/packages/frontend/src/langs/en-US.json
@@ -1,94 +1,91 @@
 {
+	"$languageName": "日本語",
 	"title": "Misskey Tools",
-	"description1": "Make Misskey more effective! All-in-one tools with various features.",
-	"description2": "Let's input your instance URL and use Misskey Tools now!",
+	"description": "Misskeyをもっと楽しく、もっと便利に。すべてのミスキストのためのオールインワンツール。",
+	"name": "Name",
 	"notes": "Notes",
 	"following": "Following",
 	"followers": "Followers",
-	"welcomeBack": "Welcome back, {{acct}}.",
 	"alertMode": "How to Send Alerts",
+	"sendAsNote": "ノート",
 	"visibility": "Visibility",
 	"appearance": "Appearance",
+	"accountSettings": "アカウント設定",
 	"template": "Template",
 	"sendAlert": "Test your alert",
 	"sendAlertDescription": "Send your alert with current settings to test.",
 	"sendAlertDisabled": "You cannot test sending alert because the \"How to Send Alerts\" setting is \"Do Nothing\".",
+	"login": "Login",
+	"loginWithMisskey": "Misskey でログイン",
 	"logout": "Log Out",
 	"logoutDescription": "If you log out, your alerts will be sent automatically.",
 	"deleteAccount": "Deactivate account integration",
 	"deleteAccountDescription": "Delete your Misskey Tools account. This will deactivate integration with Misskey.",
 	"instanceUrl": "Instance URL",
-	"login": "Login",
+	"instanceUrlPlaceholder": "e.g. misskey.io",
+	"instanceUrlValidationError": "正しいURL文字列を入力してください。",
 	"localOnly": "Local Only",
-	"remoteFollowersOnly": "Remote Followers and Local Only",
 	"help": "Help",
 	"save": "Save",
 	"theme": "Theme",
 	"language": "Language",
 	"fetching": "Fetching...",
 	"failedToFetch": "Failed to fetch",
-	"registeredUsersCount": "Users",
 	"isCalculating": "It is being calculated now. Please check back later!",
 	"ok": "OK",
 	"yes": "Yes",
 	"no": "No",
 	"termsOfService": "Terms of Service",
-	"name": "Name",
 	"resetToDefault": "Reset to default",
 	"error": "Error",
 	"retry": "Try again",
 	"saved": "Saved.",
-	"disclaimerForMisskeyHq": "Misskey Tools is <b>not</b> a official tool by Misskey Development Division.",
+	"accounts": "アカウント",
 	"translatedByTheCommunity": "Misskey Tools is translated by volunteers.",
 	"helpTranslation": "Submit translations",
+	"developedAsOpenSourceSoftware": "Misskey Toolsはオープンソースソフトウェアであり、誰でも開発にご協力いただけます。あなたも貢献してみませんか？",
 	"announcements": "Announcements",
 	"upload": "Upload",
 	"preview": "Preview",
-	"catAdjuster": "Cat Adjuster",
+	"dashboard": "ダッシュボード",
+	"missHaiAlert": "ミス廃アラート",
+	"avatarCropper": "アバタークロッパー",
+	"questionBox": "質問ボックス",
+	"followingManager": "フォローマネージャー",
+	"myPage": "マイページ",
 	"shouldUpdateToken": "Please update your authentication token, or some functions will not work properly.",
 	"update": "Update",
 	"shareMisskeyTools": "Share #MisskeyTools",
 	"shareMisskeyToolsNote": "Try #MisskeyTools !\n\nhttps://misskey.tools",
-	"instanceUrlPlaceholder": "e.g. misskey.io",
 	"settings": "Settings",
 	"accentColor": "Accent Color",
 	"changelog": "Changelog",
 	"otherSettings": "Other Settings",
-	"_sidebar": {
-		"dashboard": "Dashboard",
-		"tools": "Tools",
-		"manageTools": "Manage tools",
-		"missHaiAlert": "Miss-hai Alert",
-		"cropper": "Cat Adjuster",
-		"accounts": "Accounts",
-		"settings": "Settings",
-		"admin": "Admin Panel",
-		"about": "About Misskey Tools",
-		"return": "Return back"
-	},
-	"_welcomeMessage": {
-		"pattern1": "Are you overnoting?",
-		"pattern2": "Are you overusing Misskey?",
-		"pattern3": "How many notes did you write today?",
-		"pattern4": "Do you really think you're lite-misskist?",
-		"pattern5": "Misskey is my breathing!",
-		"pattern6": "I'm Misskey freak!"
-	},
+	"admin": "管理画面",
+	"misskeyAccounts": "Misskey アカウント…",
+	"helpAndSupport": "ヘルプとサポート",
 	"_welcome": {
-		"title": "Toolkit for Professional.",
-		"description": "All tools are designed for Misskey, in order to make Misskey more enjoyable.",
 		"misshaiAlertTitle": "Miss-hai Alert",
 		"misshaiAlertDescription": "Are you worried about overusing Misskey? With Miss-hai Alert, you can automatically post your activities on Misskey as below.",
 		"misshaiRankingDescription": "Miss-hai Ranking shows your quantified activities on Misskey.",
-		"catAdjusterDescription": "Are you sad that your cat ears don't fit your icon? You can trim your cute icons along with a preview with cat ears.",
+		"avatarCropperDescription": "丸形、角丸形、そして猫耳のついた状態をプレビューしながら、アイコンを自在に切り抜けます。魅力的なアバターを、もっと魅力的に。",
+		"questionBoxDescription": "匿名で質問できるページを開設しよう。届いた質問には、お使いのMisskeyアカウントで回答できます。",
+		"followingManagerDescription": "増えすぎたフォロー・フォロワーを管理できる高機能なマネージャー。所属サーバーや、フォローバックされていないアカウントで絞り込むことができ、一括処理にも対応しています。",
 		"nextFeaturesTitle": "Will update in the future.",
-		"nextFeaturesDescription": "This is not all. We will add more tools by updates in the future."
+		"nextFeaturesDescription": "This is not all. We will add more tools by updates in the future.",
+		"myPageDescription": "お使いのMisskeyアカウントを含むリンク、自己紹介、開設した質問ボックスなどを設置し、自由にカスタマイズできるマイページを作ろう。作成したページはURL共有できます。"
 	},
-	"_nav": {
-		"misshai": "Miss-hai",
-		"accounts": "Accounts",
-		"settings": "Settings",
-		"catAdjuster": "CAT"
+	"_dashboard": {
+		"morning": "おはようございます、{{name}}さん。",
+		"afternoon": "こんにちは、{{name}}さん。",
+		"evening": "こんばんは、{{name}}さん。"
+	},
+	"_widgets": {
+		"misshaiData": "今日のミス廃データ",
+		"announcements": "お知らせ",
+		"questionBox": "質問ボックス",
+		"apps": "アプリ",
+		"unreadHints": "未読のヒント"
 	},
 	"_missHai": {
 		"ranking": "Miss-hai Ranking",
@@ -101,32 +98,18 @@
 		"rating": "Rating",
 		"order": "Order",
 		"showRanking": "Show Ranking",
-		"useRanking": "Join the Ranking"
+		"useRanking": "Join the Ranking",
+		"note": "自動的にノートとして投稿する",
+		"notification": "Misskeyに通知する",
+		"notificationWarning": "Misskeyのバージョンによっては動作しません。"
 	},
 	"_accounts": {
 		"switchAccount": "Switch your account",
 		"useAnother": "Register with another account"
 	},
-	"_developerInfo": {
-		"title": "Developer",
-		"description": "If you want supports, send messages to the below accounts."
-	},
-	"_timeline": {
-		"title": "Timeline",
-		"description": "Shows latest notes including {{hashtag}} tags."
-	},
-	"_alertMode": {
-		"note": "Automatic Note",
-		"notification": "Notify to your account (Default)",
-		"both": "Both",
-		"nothing": "Do Nothing",
-		"notificationWarning": "'Notify to your account' option will not be work on legacy versions of Misskey."
-	},
 	"_visibility": {
-		"public": "Public",
 		"home": "Home",
-		"followers": "Followers",
-		"users": "Logged-in Users"
+		"followers": "Followers"
 	},
 	"_themes": {
 		"light": "Light",
@@ -156,7 +139,6 @@
 	"_error": {
 		"sorry": "Something went wrong. Please retry again.",
 		"additionalInfo": "Additional Info: ",
-		"hitorisskeyIsDenied": "You cannot integrate with hitorisskey.",
 		"teapot": "I'm a teapot.",
 		"sessionRequired": "Session is required.",
 		"tokenRequired": "Token is required.",