Mamizou sure got a nice makeover - would love to see a full design sheet for her, actually??? And the music is pretty groove.
The gameplay is fun, but there's still a lot of room for improvement. I like the shot-switching, but the mechanic seems kind of underutilised. For instance, the homing shot doesn't precisely home onto enemies, instead only its initial angle is affected which can cause it to miss if the enemy is about to leave the screen/moves too fast. The ice physics movement is also quite wonky and doesn't give you room for precise movement, though I guess the sparseness of the danmaku makes precise dodging not a necessity. I do like how generous the game is with items.
All in all a solid jam game! My high score was around 535, I think.