Hey there! Just finished the game and I have to say I was highly impressed by it! I really like how everything gels together for battles and I'm engrossed in where the story is going. A highlight that I really enjoyed was how each attack would be less effective which incentives you to constantly use skills rather then spam attack or just the one good skill you find. And I really like what you did with the Blind state, that was a genius move on your part and really had me in a panic when it first happened. The battle system really shines with the first boss and all the mechanics come together. It took me three tries, all failures on my part, but I was finally able to take her down.
There wasn't much to flesh out the characters and story, but of course it's a demo so I won't hold that against you and there was enough to get an grasp on the characters and enough mystery to get you asking what happens next. I hope you keep working on it and we get to see more! I'd give this two thumbs up!