To get the Japanese you have to put your system into Japanese
I downloaded this app thinking I could practice my Japanese typing. Instead of giving the user a choice of which language to type, you actually have to set your entire system into Japanese to have the app give you the Japanese option. There is a 3rd party app that will force this app into Japanese so you wont have to set your entire system into the language.
untmdsprt_jpn about
タイピスト, v2.1.0