Lovely art, fantastically done mechanics, nice idea, 9.69/10.
I feel like telegraphing exactly when the boss hits could've been better, like flickering the target sprite on and off.
and It felt like it could've had more interesting floors and walls than a solid color, but hey that is a good shade of purple. (like more things like the star in the middle).
the dodge felt perfect, with a nice animation.
the boss' wing flap animation kinda looks like its flapping inward, but every other animation looks truly stunning.
tldr: really good game, most likely a competitor for the crown in my eyes.