I really like your premise and art style and the fact you have a sort of magic system (the fireplace and window) but it still feels under baked.
The smugness of the MC is too much, and I was really put off from the game at the beginning until you get the chance to redeem yourself. I think the smugness in the prison scene is a good ratio but in Hogwartz he seems "dumb" and "too uncaring" to be a character you can resonate with, that is until he starts redeeming himself where he is a bit more toned down.
Also I really hope you can expand on the magic system where there will be more interactions with the environment or people using said spells (we are in a wizardry world after all).
I haven't managed to start Act 2 yet, because of spoiling for myself and finishing Act 1 drained me and I was some what put off by the writing but I really want to. I think you have a raw gem in your hands which would be SO AMAZING if you polish it some more.
I played the newer plot.