diff --git a/browser/main/Detail/FullscreenButton.js b/browser/main/Detail/FullscreenButton.js
index ee212603..bd76447c 100644
--- a/browser/main/Detail/FullscreenButton.js
+++ b/browser/main/Detail/FullscreenButton.js
@@ -5,15 +5,17 @@ import styles from './FullscreenButton.styl'
 import i18n from 'browser/lib/i18n'
 
 const OSX = global.process.platform === 'darwin'
-const hotkey = (OSX ? i18n.__('Command(⌘)') : i18n.__('Ctrl(^)')) + '+B'
 const FullscreenButton = ({
  onClick
-}) => (
-  <button styleName='control-fullScreenButton' title={i18n.__('Fullscreen')} onMouseDown={(e) => onClick(e)}>
-    <img styleName='iconInfo' src='../resources/icon/icon-full.svg' />
-    <span styleName='tooltip'>{i18n.__('Fullscreen')}({hotkey})</span>
-  </button>
-)
+}) => {
+  const hotkey = (OSX ? i18n.__('Command(⌘)') : i18n.__('Ctrl(^)')) + '+B'
+  return (
+    <button styleName='control-fullScreenButton' title={i18n.__('Fullscreen')} onMouseDown={(e) => onClick(e)}>
+      <img styleName='iconInfo' src='../resources/icon/icon-full.svg' />
+      <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Fullscreen')}({hotkey})</span>
+    </button>
+  )
+}
 
 FullscreenButton.propTypes = {
   onClick: PropTypes.func.isRequired
diff --git a/browser/main/Detail/FullscreenButton.styl b/browser/main/Detail/FullscreenButton.styl
index cc1a8dff..133577f3 100644
--- a/browser/main/Detail/FullscreenButton.styl
+++ b/browser/main/Detail/FullscreenButton.styl
@@ -17,6 +17,10 @@
   opacity 0
   transition 0.1s
 
+.tooltip:lang(ja)
+  @extend .tooltip
+  right 35px
+
 body[data-theme="dark"]
   .control-fullScreenButton
     topBarButtonDark()
\ No newline at end of file
diff --git a/browser/main/Detail/StarButton.js b/browser/main/Detail/StarButton.js
index d74809cd..8000970d 100644
--- a/browser/main/Detail/StarButton.js
+++ b/browser/main/Detail/StarButton.js
@@ -54,7 +54,7 @@ class StarButton extends React.Component {
             : '../resources/icon/icon-star.svg'
           }
         />
-        <span styleName='tooltip'>{i18n.__('Star')}</span>
+        <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Star')}</span>
       </button>
     )
   }
diff --git a/browser/main/Detail/StarButton.styl b/browser/main/Detail/StarButton.styl
index d5fd755b..e9c523e9 100644
--- a/browser/main/Detail/StarButton.styl
+++ b/browser/main/Detail/StarButton.styl
@@ -21,6 +21,11 @@
   opacity 0
   transition 0.1s
 
+.tooltip:lang(ja)
+  @extend .tooltip
+  right 103px
+  width 70px
+
 .root--active
   @extend .root
   transition 0.15s
diff --git a/browser/main/Detail/ToggleModeButton.js b/browser/main/Detail/ToggleModeButton.js
index 7c026429..fcbaab34 100644
--- a/browser/main/Detail/ToggleModeButton.js
+++ b/browser/main/Detail/ToggleModeButton.js
@@ -14,7 +14,7 @@ const ToggleModeButton = ({
     <div styleName={editorType === 'EDITOR_PREVIEW' ? 'active' : 'non-active'} onClick={() => onClick('EDITOR_PREVIEW')}>
       <img styleName='item-star' src={editorType === 'EDITOR_PREVIEW' ? '' : '../resources/icon/icon-mode-split-on-active.svg'} />
     </div>
-    <span styleName='tooltip'>{i18n.__('Toggle Mode')}</span>
+    <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Toggle Mode')}</span>
   </div>
 )
 
diff --git a/browser/main/Detail/ToggleModeButton.styl b/browser/main/Detail/ToggleModeButton.styl
index 73f5acbd..2b47b932 100644
--- a/browser/main/Detail/ToggleModeButton.styl
+++ b/browser/main/Detail/ToggleModeButton.styl
@@ -40,6 +40,11 @@
   opacity 0
   transition 0.1s
 
+.tooltip:lang(ja)
+  @extend .tooltip
+  left -8px
+  width 70px
+
 body[data-theme="dark"]
   .control-fullScreenButton
     topBarButtonDark()
diff --git a/browser/main/Detail/TrashButton.js b/browser/main/Detail/TrashButton.js
index 473c2d0b..d26be66e 100644
--- a/browser/main/Detail/TrashButton.js
+++ b/browser/main/Detail/TrashButton.js
@@ -11,7 +11,7 @@ const TrashButton = ({
     onClick={(e) => onClick(e)}
   >
     <img styleName='iconInfo' src='../resources/icon/icon-trash.svg' />
-    <span styleName='tooltip'>{i18n.__('Trash')}</span>
+    <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Trash')}</span>
   </button>
 )
 
diff --git a/browser/main/Detail/TrashButton.styl b/browser/main/Detail/TrashButton.styl
index 7c7af878..a82cfa6b 100644
--- a/browser/main/Detail/TrashButton.styl
+++ b/browser/main/Detail/TrashButton.styl
@@ -17,6 +17,10 @@
   opacity 0
   transition 0.1s
 
+.tooltip:lang(ja)
+  @extend .tooltip
+  right 46px
+
 .control-trashButton--in-trash
   top 60px
   topBarButtonRight()
diff --git a/locales/ja.json b/locales/ja.json
index 9cfc2986..832bc308 100644
--- a/locales/ja.json
+++ b/locales/ja.json
@@ -8,7 +8,10 @@
 	"to create a new note": "ノートを新規に作成",
 	"Toggle Mode": "モード切替",
 	"Add tag...": "タグを追加...",
+  "Star": "お気に入り",
+  "Fullscreen": "全画面",
 	"Trash": "ゴミ箱",
+  "Info": "情報",
 	"MODIFICATION DATE": "修正日",
 	"Words": "ワード",
 	"Letters": "文字",