diff --git a/strings/ja.json b/strings/ja.json
index 593f6ef3..bfdfb595 100644
--- a/strings/ja.json
+++ b/strings/ja.json
@@ -7,20 +7,51 @@
   "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",
+  "ButtonCloseFeed": "フィードを閉じる",
   "ButtonCollections": "コレクション",
   "ButtonCreate": "作成",
+  "ButtonCreateBookmark": "ブックマークを作成",
+  "ButtonCreateNewPlaylist": "新しいプレイリストを作成",
   "ButtonDelete": "削除",
+  "ButtonHistory": "履歴",
   "ButtonHome": "ホーム",
+  "ButtonLatest": "最新",
   "ButtonLibrary": "ライブラリー",
+  "ButtonNewFolder": "新しいフォルダー",
+  "ButtonNextEpisode": "次のエピソード",
   "ButtonOk": "はい",
-  "ButtonPlay": "プレイ",
-  "ButtonRead": "野村",
+  "ButtonOpenFeed": "フィードを開く",
+  "ButtonOverride": "上書きする",
+  "ButtonPause": "一時停止",
+  "ButtonPlay": "再生",
+  "ButtonPlayEpisode": "エピソードを再生",
+  "ButtonPlaylists": "プレイリスト",
+  "ButtonRead": "読む",
   "ButtonReadLess": "閉じる",
   "ButtonReadMore": "もっと見る",
   "ButtonRemove": "削除",
   "ButtonSave": "保存",
   "ButtonSearch": "検索",
+  "ButtonSeries": "シリーズ",
+  "ButtonSetTimer": "タイマーを設定",
+  "ButtonUserStats": "ユーザーの記録",
   "ButtonYes": "はい",
+  "HeaderAccount": "アカウント",
+  "HeaderChapters": "チャプター",
+  "HeaderCollection": "コレクション",
+  "HeaderCollectionItems": "コレクションの項目",
+  "HeaderConnectionStatus": "接続状況",
+  "HeaderDataSettings": "データ設定",
+  "HeaderDetails": "詳細",
+  "HeaderDownloads": "ダウンロード",
+  "HeaderEbookFiles": "電子書籍ファイル",
+  "HeaderEpisodes": "エピソード",
+  "HeaderEreaderSettings": "電子書籍リーダーの設定",
+  "HeaderLatestEpisodes": "最新のエピソード",
+  "HeaderLibraries": "ライブラリー",
+  "HeaderLocalFolders": "ローカルフォルダー",
+  "HeaderLocalLibraryItems": "ローカルライブラリーの項目",
+  "HeaderNewPlaylist": "新しいプレイリスト",
   "LabelBooks": "ほん",
   "LabelContinueListening": "続きから聞く",
   "LabelLanguage": "言語",