Fellow 2hu fan here! I feel like this game is at lunatic difficulty, as it took me 2 "continues" to complete it. Difficulty aside, it feels like a genuine Touhou game! The great zunpets in the BGM and pretty danmaku patterns are a spectacle to behold. It would be perfect if it could have a more polished UI and better tie itself to the unstable theme.
Edit: And also, consider indicating Wakasagihime's behind-your-back bullet spawns before they hit the screen.