A lovely little RPG game! Finally the fabled Paper Touhou game exists. Very nice art style and the gameplay is fairly accurate to the Paper Mario gamefeel I think. Only grip I have about the art is that Youmu's skin color is really off. I get it's accurate to who she is but still...
I do have a few complaints about gameplay. Firstly, the battle progression was pretty slow. I don't mind the QTEs being slow since it gives the player more reaction time, but attack animations (Youmu moving to slash the enemy, Reisen shooting, etc) could have afforded to be much faster to really nail in that excitement of a RPG battle. Furthermore, there's no QTE indication for the blocking and parrying sections, which is just a little bit annoying. It's probably intentional, who knows. Finally, I didn't see much of a reason to switch character positions? It seems as if you can use it to protect whoever has low HP so they have time to heal up, but enemies attack characters no matter where they are so it seems pretty redundatnt - unless the rate of attack is decreased, but I couldn't feel that either.
The final point I have about gameplay is the resource management, which I'll classify as "frustrating but kinda makes sense". 4000 yen is a tall order considering how most battles give you only around 250-400 yen at max. Combined with a limited inventory and no way to purchase more items, this means not only do you really have to be careful with how you use resources, but you actually really have to make use of blocking and parrying as much as you can to reduce damage dealt and, thus, reduce the need to use resources. It's cool, but do take note of the difficulty if you ever make this a full-fledged game I think.
Overall one of the more solid games I've played, good job to the team!