This is good game!
But a little mistake has been found.
False:ぢ(ji) ,ヂ(ji), ぢゃ(ja),ヂャ(ja),ぢゅ(ju),ヂュ(ju),ぢょ(jo),ヂョ(jo),づ(zu)
True :ぢ(di),ヂ(di),ぢゃ(dya),ヂャ(dya),ぢゅ(dyu),ヂュ(dyu)ぢょ(dyo)ヂョ(dyo),づ(du)
It's not "false", the ローマ字 as you type in this game is according to the Hepburn romanization system (look it up in Wikipedia). If you prefer to type them as di, dya, dyu, dyo, du..., you can simply change the input mode to "All" from "Hepburn" in the main menu (look at the top right corner). Enjoy!
 "Kana Warrior / かなウォリアー"){kind=icon}
 "Voice from the Sea"){kind=icon}
 "Strike Force Heroes 2"){kind=icon}
It's not "false", the ローマ字 as you type in this game is according to the Hepburn romanization system (look it up in Wikipedia). If you prefer to type them as di, dya, dyu, dyo, du..., you can simply change the input mode to "All" from "Hepburn" in the main menu (look at the top right corner). Enjoy!