diff --git a/strings/ja.json b/strings/ja.json
index 1457265a..593f6ef3 100644
--- a/strings/ja.json
+++ b/strings/ja.json
@@ -1,12 +1,28 @@
 {
   "ButtonAdd": "追加",
+  "ButtonAddNewServer": "サーバーを追加",
+  "ButtonAuthors": "作者",
+  "ButtonBack": "戻る",
   "ButtonCancel": "キャンセル",
-  "ButtonCancelTimer": "キャンセルタイマー",
+  "ButtonCancelTimer": "タイマーをキャンセル",
+  "ButtonClearFilter": "絞り込みを解除",
+  "ButtonClearLogs": "ログを削除",
+  "ButtonCollections": "コレクション",
+  "ButtonCreate": "作成",
+  "ButtonDelete": "削除",
+  "ButtonHome": "ホーム",
+  "ButtonLibrary": "ライブラリー",
   "ButtonOk": "はい",
   "ButtonPlay": "プレイ",
   "ButtonRead": "野村",
+  "ButtonReadLess": "閉じる",
+  "ButtonReadMore": "もっと見る",
+  "ButtonRemove": "削除",
+  "ButtonSave": "保存",
+  "ButtonSearch": "検索",
   "ButtonYes": "はい",
   "LabelBooks": "ほん",
+  "LabelContinueListening": "続きから聞く",
   "LabelLanguage": "言語",
   "LabelName": "名",
   "LabelPassword": "パスワード",