diff --git a/astro-i18next.config.mjs b/astro-i18next.config.mjs
new file mode 100644
index 0000000..a89adb5
--- /dev/null
+++ b/astro-i18next.config.mjs
@@ -0,0 +1,5 @@
+/** @type {import('astro-i18next').AstroI18nextConfig} */
+export default {
+    defaultLocale: "en",
+    locales: ["en", "jp"],
+}
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diff --git a/public/locales/en/translation.json b/public/locales/en/translation.json
new file mode 100644
index 0000000..aab3fb3
--- /dev/null
+++ b/public/locales/en/translation.json
@@ -0,0 +1,11 @@
+{
+    "Header": {
+        "Flux": "Flux",
+        "Home": "Home",
+        "Products": "Products",
+        "Pricing": "Pricing",
+        "Support": "Support",
+        "Login": "Login",
+        "SignUp": "Sign Up"
+    }
+}
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diff --git a/public/locales/jp/translation.json b/public/locales/jp/translation.json
new file mode 100644
index 0000000..8e88562
--- /dev/null
+++ b/public/locales/jp/translation.json
@@ -0,0 +1,11 @@
+{
+    "Header": {
+        "Flux": "Flux",
+        "Home": "ホーム",
+        "Products": "製品",
+        "Pricing": "価格設定",
+        "Support": "サポート",
+        "Login": "ログイン",
+        "SignUp": "サインアップ"
+    }
+}
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