I'm glad you enjoyed everything so much! We had a bit of an advantage with the battle system - the core system was completed for the main game before the jam started, but we got permission from Nai to use it in the jam. But the enemies are all new, and obviously the story, characters, battle dialogue, etc.
I should probably write a battle guide for the game, as it's a little complex especially since you're thrown into the game with two older witches who already know many spells (instead of unlocking a them slowly). Each enemy has multiple winning strategies, but only one strategy is hinted at by the battle dialogue in game. I did have the feedback that the game was too hard from testers back when only what is now called Hard mode existed, so I added Normal mode - but perhaps I need an easy mode too XD.