I can't believe I didn't expect this ending. Somehow I didn't put two and two together, so I was more surprised than I should have been :P
The gameplay isn't something to write home about but overall it was very enjoyable all along. Liked the art and the writing!
I featured this epic adventure in my Touhou Game Jam showcase video!
https://youtu.be/PoWrHcmGjbU?t=5403