It offers you can input Japan words without the physical keyboard. http://project.kimx.info/2016/11/jk-keyboard.html
提供電腦沒有日文鍵盤時,也可以輕鬆的輸入日文
When your computer doesn't have the keyboard, this extension might help you.
支援中文、英文
Language:Chinese、English
http://project.kimx.info/2016/11/jk-keyboard.html