It's a really interesting RPG (or whatever the genre is supposed to be, I'm not sure on this) but there are things to fix.
After playing the Jam version (that had a couple annoying bugs), I tried the latest one (v1.02) and I still can't get really far because this time I tried switching the equipment for the loot and wasn't allowed to proceed to Level 1.
As for the Jam version, the bugs I've noticed are: equipment and party formation resets when you go to battle regardless of your modifications; and if your captured main characters come to fight you, the game freezes (at least it froze when Youmu came to the front to fight my Tewi)
Bugs aside, it would be most beneficial if you could actually see the character's stats in the barracks, as well as having an actual inventory for the characters' equips.
The battle system however is very well thought. It's got a lot of details so it's daunting at first, but again it's pretty well put together! I'd really like to see this game improved and bug-free.
I made a video showcasing the entries of this Touhou Fan Game Jam, and this game is right here:
https://youtu.be/PoWrHcmGjbU?t=9264