I actually didn't really enjoy this T_T The humor landed in the beginning for me that I liked, but the ones after the intro didn't really. I also had this issue with the characters being so speedy and even the menu selection quite slippery and I'm not sure if this is just me, but the speediness even in menu selection affected things negatively for me. The battles didn't grab my attention much and I find myself kind of randomly pressing whatever, and then at times making sure I attack and heal when HP is low. Though I do gotta say I appreciated the class change idea a bit; that was the interesting part for me. But there's kind of not really any revival item, and I started to get frustrated when I'm left with one character and around floor 10, and started to realize perhaps this could be endless and maybe I'll never beat the game. Don't have much fuel to retry or battle when there's only one character left in the party. Maybe if I skipped encounters and only fought the bosses it might have been easier. Maybe this is a rogue-like game, but I think without at least some revive items here and there, it didn't feel balanced at all. It feels like I have so many skills and characters at once, and even healing items, but no revive items (only ever revived a character once at the beginning and never since then was there a revive item for me).
The idea itself is interesting, but perhaps the frustrating parts above could be tweaked a bit.