It is annoying that a RPG game cannot be windowized and provide barely any settings for users to change. Once you launch the game, it just fullscreens and the options for you are just play the game/exit the game. That is oversimplified to anti user experience.

And the developer won't tell you, you can press ALT+Enter to windowize, press F1 to open setting to change key mapping, press Shift to fast pace.

I figured out that for quite a while, and that apparently thanks to RPGMaker assembling the settings into the game by default, not the developer who provides.