As it is right now, it is an okay working game. It has potential, but alot of work needs to be put into this. Alot of adjustments for starters,

 Fawn's voice lines get stale real fast, especially her sexy remarks and kill enemy lines. So I highly recommend adding either long intervals or use it for something very specific that wont be used all the time. Her Pixel outfit needs adjusting, the glasses gleam is too repetitive, there is too much emphasis on her Heart design, it stands out way too much in comparison to her Portrait in the Menu. The Knight poses/animations need to be redone, I get the idea that was going on here with the knight running, but it just looks silly. When you look at the thief she looks sexy, her movements make sense, she is done right, but then you look at the knight, first impression is she looks strong and sexy, but as soon as you see her run, I was disappointed. Transforming should be faster due to how often you end up using it.

Other remarks I have to say are, Im surprised  you cant seduce enemies, not even to just stun/charm them, and yet your a Succubus. Im assuming the assets of the current side characters are place holders, because the art style was clashing really bad when comparing between the MC and the rest of the characters. The last thing so far is considering the nature of the character and type of gameplay are you going to have sex animations between Fawn and her fallen enemy?

The story plot is interesting and I would like to see where her story goes. I am going to continue to watch and see how this game proceeds.