diff --git a/UI/Web/src/assets/langs/ja.json b/UI/Web/src/assets/langs/ja.json
index 3c165ed6d..03de657ad 100644
--- a/UI/Web/src/assets/langs/ja.json
+++ b/UI/Web/src/assets/langs/ja.json
@@ -4,7 +4,7 @@
         "username": "{{common.username}}",
         "password": "{{common.password}}",
         "password-validation": "{{validation.password-validation}}",
-        "forgot-password": "",
+        "forgot-password": "パスワードを忘れた方",
         "submit": "{{common.submit}}"
     },
     "dashboard": {
@@ -16,13 +16,13 @@
         "recently-added-title": "最近追加されたシリーズ"
     },
     "edit-user": {
-        "edit": "",
-        "close": "",
-        "username": "",
-        "required": "",
-        "email": "",
-        "not-valid-email": "",
-        "cancel": "",
+        "edit": "{{common.edit}}",
+        "close": "{{common.close}}",
+        "username": "{{common.username}}",
+        "required": "{{validation.required-field}}",
+        "email": "{{common.email}}",
+        "not-valid-email": "{{validation.valid-email}}",
+        "cancel": "{{common.cancel}}",
         "saving": "保存中。。。",
         "update": "更新"
     },
@@ -203,14 +203,14 @@
     },
     "change-password": {
         "password-label": "{{common.password}}",
-        "current-password-label": "",
-        "new-password-label": "",
-        "confirm-password-label": "",
-        "reset": "",
-        "edit": "",
-        "cancel": "",
-        "save": "",
-        "required-field": "",
+        "current-password-label": "現在のパスワード",
+        "new-password-label": "新しいパスワード",
+        "confirm-password-label": "新しいパスワード（確認）",
+        "reset": "{{common.reset}}",
+        "edit": "{{common.edit}}",
+        "cancel": "{{common.cancel}}",
+        "save": "{{common.save}}",
+        "required-field": "{{validation.required-field}}",
         "passwords-must-match": "",
         "permission-error": ""
     },
@@ -849,7 +849,7 @@
         "size-title": "",
         "id-title": "",
         "links-title": "",
-        "isbn-title": "",
+        "isbn-title": "ISBN",
         "last-read-title": "",
         "less-than-hour": "",
         "range-hours": "",
@@ -1650,22 +1650,22 @@
     },
     "common": {
         "reset-to-default": "",
-        "close": "",
-        "cancel": "",
+        "close": "閉じる",
+        "cancel": "キャンセル",
         "create": "",
         "save": "",
         "reset": "",
         "add": "",
         "apply": "",
-        "delete": "",
+        "delete": "削除",
         "edit": "",
         "help": "",
         "submit": "",
-        "email": "",
+        "email": "メールアドレス",
         "read": "",
         "loading": "読み込み中。。。",
-        "username": "",
-        "password": "",
+        "username": "ユーザーネーム",
+        "password": "パスワード",
         "promoted": "",
         "select-all": "",
         "deselect-all": "",