You shouldn't need to go to that level, just
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on your computer? And make sure to play in Japanese Locale. I'm pretty sure I had both set before I ever picked up LonaRPG, so I don't know if either are strictly necessary. Other than that, I'm not sure what the issue could be... especially if it's limited to this game alone.
When you first start the game, it will prompt you to choose language and controls (KB for keyboard). If you accidentally set it wrong, you can change it in-game (see screenshot) or edit
LonaRPG\UserData\GameLona.ini and change
GamePadUImode = KB.
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