I had an absolute blast reading through this, it really scratches that mystery/suspense VN itch in a way I've not experienced in a long time! The characters are fantastically unique and well written, especially Hedwig who is an extremely interesting protagonist to be in the head of. On top of that the soundtrack has some real bangers.
Really can't recommend this enough if you're into mystery stories, especially if you like stuff like Umineko (there's When They Cry vibes but it's enough of its own thing to distinguish itself also!)
My only complaint is that I'm going to be all impatient in waiting for Volume Two to come out!