Finally got to play the demo today! It's good but very confusing in a lot of ways and I've got some criticisms.
I wish the characters and the motives were introduced more clearly. Rooms' design is weird to the point it's hard to find where to go sometimes. In battles I kind of wish you could at least check the enemy or something. Weapons and armors would be nice because it's annoying to be dealing 0 hp sometimes or getting damaged for half the hp at a time.
Aside from that, lovely artstyle! Music is also really nice. I'm rating it a 6/10 for the overall feel. It'd be higher if it was clearer and more understandable frankly.
I see potential in this. Good luck with the development! :)