Just finished it in Lunatic, it's an amazing game, very cute and stylish graphics, the dialogues are fun and gay (as they are supposed to be), gameplay is the best part, I may be wrong on this, but was this inspired by Crosscode? Sanae attacks were very similar to Crosscode and Utush0 3-jump attack was very similar to The Designer attack from Crosscode as well.
The story was kind of confusing but in a Touhou way, you know smug Reimu and all that things and with some mysteries left to be solved.
Only thing that felt lacking was a reward for playing Lunatic but I can't complain that to a Jam game. 10/10 would pay for a bigger version of this game
Gameplay inspiration is 1 part Cross Code (though I've yet to play much of it) and 2 parts Lucah: Born of a Dream, from which I borrowed a bunch of ideas like the slow-motion dodges, enemy attack telegraphs, and the automatic lock-on system.
The extra dialog scene that takes place after your screenshot is only there if you're on Lunatic mode. So yeah, not a huge reward, but it's something.