Well it's a good platforming action game.
There are some little things that bug me:
*there are times where if Reimu is sliding along a wall, she either swipes with the gohei or shoots. And whether she does which seems random (at least to me)
*for airdashes: I find it awkward how if you're inputting Left/Right + Up, then priority is given to Left/Right. I think it would be much better if Up was prioritized instead because then you won't need to stop going left/right to dash upward - in action games there are times where you WILL want to keep going left/right while you're doing an input that needs the Up button.
*And the fight was a bit of a pain for me. Although I think you are supposed to jump in on the openings in the attacks, having to hit 12 times with the amulets takes forever. And I couldn't smack Patche with the gohei even once because she really liked to hang out high in the air when I played.
The other aspects of the game are good. The controls are nice enough (except for the aforementioned airdashes), and the sound feedbacks are on point. Challenge-wise it's good (except for the aforementioned long waiting between phases that holds the pacing back).
I featured this game in my Touhou Fangame Jam showcase!
https://youtu.be/PoWrHcmGjbU?t=7987