Really fun! I love how bouncy everything is. The music is also really good and definitely had me in the zone. I also liked the story and character choices used here!
One thing that I would add is an option to change the speed that the notes come at you. I'm a rhythm game player and I generally prefer having notes approach quickly, it helps me differentiate between the different notes better and gives me more accurate timing. The way the game is, it's hard to tell notes apart and when to hit them when they are all clustered together, especially on hard mode. That said, this was really good!