diff --git a/resources/lang/ja/auth.php b/resources/lang/ja/auth.php
new file mode 100644
index 0000000..9c15f47
--- /dev/null
+++ b/resources/lang/ja/auth.php
@@ -0,0 +1,19 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Authentication Language Lines
+    |--------------------------------------------------------------------------
+    |
+    | The following language lines are used during authentication for various
+    | messages that we need to display to the user. You are free to modify
+    | these language lines according to your application's requirements.
+    |
+    */
+
+    'failed' => 'ログイン情報が一致しません。',
+    'throttle' => 'ログイン試行が多すぎます。 :seconds 秒後にやりなおしてください。',
+
+];