First off, this is amazing! What you (and/or team) accomplished in 1 month is impressive!
You have cutscenes, a transformation sequence, and high quality gameplay! Overall, a very fun game!
I like the transformed magical girl design and the magical kitty on the skateboard. The steaming pink ribbons as she moves is a nice touch as well.
And the gameplay feels very well-tested. I did not notice any bugs, glitches or issues while playing through 4 - 5 levels. Also, it was pretty easy to pick-up and learn. Still learning the best way to navigate a map but this feels good to play!
Moreover on the gameplay, there is some clever level design in this game. The use of colors for various aspects (the green/ blue lines for the wireframes of the level, the red lines for the "enemies" and the pink colors for the player helped give direction to the game.
Great work on this, not much I can say in terms of feedback (maybe adjust some of the volume for the music and sound effects?) Maybe a bit more polish to the designs for a future version?
This is a great game and I am loving this direction. Anything remotely close to Jet Set Radio's gameplay is always going to peak my interest.
Good luck with the game jam and looking forward to seeing this being developed further! :D