I'm very excited to see a game with Kyouko that actually features her day job. The visuals and audio are great, too.
The game itself is nice and easy to pick-up. However, when the fun doesn't come from mastering the controls, it needs to come from somewhere else. Unfortunately, the enemy spirits don't do much and they also take an unsatisfying amount of hits to kill (although once you've figured the game out, it doesn't give you much reason to actually kill them). Suika's fight is similarly polished but not very interesting. Both regular enemies and Suika could use less health and some projectile attacks. The broom should probably travel longer when knocked out of Kyouko's hands to make it non-trivial to just pick it up again.
I guess I'm just listing things the developers are probably already aware of. More interesting feedback might be that I never got lost or felt like I didn't know what to do. I'd guess my experience with the game was almost exactly as the developers would have predicted.
Also, here is a screenshot showing a minor bug with the z-index for rocks and trees:
