Love the art, the character art gives me big Celeste vibes, and the parallax scrolling is a great touch that makes the game just look that much more interesting.
The mechanic is interesting but I feel both the cool down and the transformation time could've been shortened a bit so I wasn't just waiting around before I can continue playing the game. An animation or an indicator to show that you are currently transforming as there were definitely a few times where I felt like I was for sure doing it correctly but must have pressed it just ever so slightly before I stopped moving.
Great looking game and concept overall though, good job!
-Scott