diff --git a/src/i18n/ja.json b/src/i18n/ja.json
new file mode 100644
index 00000000..4f994a22
--- /dev/null
+++ b/src/i18n/ja.json
@@ -0,0 +1,11 @@
+{
+    "about": {
+        "mrf": {
+            "keyword": {
+                "is_replaced_by": "→",
+                "replace": "置き換える"
+            },
+            "mrf_policies": "有効なMRFポリシー"
+        }
+    }
+}