diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 0f4eb6e8c..a97f35a9f 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -888,19 +888,19 @@
     <string name="instance_logo">インスタンスのロゴ</string>
     <string name="toast_error_instance_reg">有効なインスタンスのチェック中に問題が発生しました！</string>
     <string name="join_mastodon">Mastodonに参加</string>
-    <string name="pickup_instance_category">Choose an instance by picking up a category, then click on a check button.</string>
-    <string name="users">%1$s users</string>
-    <string name="password_confirm">Confirm password</string>
-    <string name="agreement_check">I agree to %1$s and %2$s</string>
-    <string name="server_rules">server rules</string>
-    <string name="tos">terms of service</string>
-    <string name="sign_up">Sign up</string>
-    <string name="validation_needed">This instance works with invitations. Your account will need to be manually approved by an administrator before being usable.</string>
-    <string name="all_field_filled">Please, fill all the fields!</string>
-    <string name="password_error">Passwords don\'t match!</string>
-    <string name="email_error">The email doesn\'t seem to be valid!</string>
-    <string name="username_indicator">Your username will be unique on %1$s</string>
-    <string name="email_indicator">You will be sent a confirmation e-mail</string>
+    <string name="pickup_instance_category">カテゴリーを選択してインスタンスを選択し、チェックボタンをタップしてください。</string>
+    <string name="users">%1$s人のユーザー</string>
+    <string name="password_confirm">パスワードの確認</string>
+    <string name="agreement_check">%1$sと%2$sに同意する</string>
+    <string name="server_rules">サーバーのルール</string>
+    <string name="tos">利用規約</string>
+    <string name="sign_up">新規登録</string>
+    <string name="validation_needed">このインスタンスは招待制です。アカウントが利用可能になるには、管理者から手動で承認を受ける必要があります。</string>
+    <string name="all_field_filled">全ての欄を記入してください！</string>
+    <string name="password_error">パスワードが一致しません！</string>
+    <string name="email_error">このメールアドレスは無効です！</string>
+    <string name="username_indicator">あなたのユーザー名は%1$s上に固有です</string>
+    <string name="email_indicator">確認メールを送信しました</string>
     <string name="password_indicator">Use at least 8 characters</string>
     <string name="password_too_short">Password should contain at least 8 characters</string>
     <string name="username_error">Username should only contain letters, numbers and underscores</string>