In the current Flare, it is difficult to read Japanese letter because of the font size, so it is necessary to update Flare.

I see Japanese letter when I look at the title screen on the screen shot screen. So  I guess that you want Japanese people  playing.

There is also a problem with Japanese input by keyborad.
In the current Flare, Japanese can be input, but the character being converted(from kana to kanji etc.) can not be displayed. Also, when using Japanese IME, the arrow key, "Delete" key and "BackSpace" key do not work properly. Even if you press the arrow key, another meaningless character is inserted.