There's a severe issue with Hina's hitbox, I don't get why the attack and Hina's ones are quite similar, it almost feels like mega man's topman power up and not in the good sense, plus, the fact that you cant walk diagonally makes this a lot harder.
It's not quite clear when you grow, it could make more sense to have 3 to 6 indicators instead of 5, since growing suddenly can deal damage to you and it feels quite unfair.
Other than that, I loved the music and visuals, puzzles might be a challenge but at least they're manageable.