I LOVED THIS ENTRY! It's just oozing with potential. The game play is fun and unique (reminds me a bit of lethal league). The art is engaging and the music is catchy! I am in love with the character designs and general aesthetic!
A bit more in the polish and game feel department and I think you have a really solid game on your hands. Notably, even with the hit fx, the hitstop is too harsh/long imo, the game feels like it freezes. Louder sound effects and subtle screen shake/white flashes might help.
Regarding game play, spinning the moon left and right could be bound to the mouse keys. And maybe consider giving the moon a hitbox all the time? It won't be as effective as spinning it, but there are times where I wish it had one.