Such a wonderful visual novel! I'm having a blast and I haven't even gotten that far into it yet. It's such an incredible use of fairy tales. I think that's my favorite thing about it, the premise you've woven around it. There's a lot of setup for well-paced, robust character development here and the story hits all the marks to be expected without depending too much on overused tropes.
The artwork is great and everything gels together well in the world you're building instead of the locations and attire being eccentric and all over the place "just because". The writing reveals a lot about each character without being too heavy handed and I think you guys chose the right background music for each shift in tone.
I don't really have anything negative to say about it. Of all the serious visual novels I play, this is definitely one of the better ones. Also, kudos on the original theme and for taking the time to make it! Not a lot of people take the time to make an intro like that for their visual novels. I'm looking forward to finishing this out. Good luck with this and with your future projects!