Z and X is the standard for RPG Maker, and you can use Numpad as well if you have that. Still, I'll see if I can add configurable keybinding in the option menu in a later update (the upcoming one today is mainly for JP and French language support, as well as fixing that crash bug). Thanks for playing by the way!
Viewing post in Reimu and the Fantasy Mirror jam comments
yeah, because RPG Maker is japanese software. and japanese games often have Z and X without configurable keybinding as well. really frustrating when i wanna play japanese games... especially plattformers... i suffered a lot from that... had to set an additional keyboard layout (QWERTY) in my system (language settings u can add additional keyboard languages) to switch to for those games... but always annoying when i accidentally switch (default shortkey for switching layouts is ALT + SHIFT easy to accidentally trigger when doing another shortkey with those 2) or forget to switch back and then try to write something and z and y r always wrong and all special characters too... so whenever possible i change the keybind ingame instead. and if its possible to send feedback to the dev(s) i always ask for keybind configuration.