diff --git a/config/i18nProperties.ts b/config/i18nProperties.ts
index 467887b1..57d7f5a6 100644
--- a/config/i18nProperties.ts
+++ b/config/i18nProperties.ts
@@ -1 +1 @@
-export const availableLanguages = ["en"] as const;
+export const availableLanguages = ["en", "ja"] as const;
diff --git a/messages/ja.json b/messages/ja.json
new file mode 100644
index 00000000..0967ef42
--- /dev/null
+++ b/messages/ja.json
@@ -0,0 +1 @@
+{}