The game is really pretty and I love the art style, everything felt really cohesive!
I think the controls could use some work, I felt very limited with what I could do with my slash since it only aimed upwards and i ended up not using it at the end because of that. But I do like the bullet hell it became at the end of the game, the bosses were really cool!
Other than that I like how the spin theme was implemented with the petals! Though the tutorial was kinda bugged and I wasn't able to play through it. Because of that, it took me awhile to figure out I was supposed to do something during the spin state. It was also jarring to get used to going back to normal movement mechanics, maybe give a bit of time for the player to move after the spin state before throwing another attack..? And there were a couple of times I was holding down the arrow and it caused the spin state to get delayed. Its just a minor thing didn't affect the game too bad.
Overall its a really neat game and I kinda want to see more like this now!