The game is fun but very very difficult. Managed to reach mamizou's boss fight but couldnt beat the second phase. The movement is somewhat janky, maybe adding a dash or some other movement option might help? And i would've appreciated a way to see what your actual hitbox is.
The camera should also be raised more above aya as i had trouble during hatate's fight knowing what bullets were actually being shot. (maybe have a fixed camera view for boss fights?). Mamizou's first phase is also really easily cheesable as she gets stuck below one of the ledges so you can just keep shooting burst shots at her and push her back under the ledge.
I like the concept of the burst shots also acting as a double jump, but the deflection upgrade to it is pretty hard to use. It would be nice if there some kind of graceperiod after getting hit by a bullet where you can burst and deflect the bullets (like death bombing in mainline touhou games). Also there should be a way to heal between phases of a boss fight because it was really hard to keep enough lives for the second phase.
Despite all these issues the game is still fun. Aya slightly flying by shooting bullets is fun to see and killing fairies with burst shots is fun to do. I like that each level gives you a slight upgrade to your kit. The art is also very cute.