So I'm not done with this, currently playing through. I died once already, but I have some things to say about it.
First of all, for context, VNs aren't my go-to genre. I've played and enjoyed some classics with VN elements (Snatcher, anyone?) but I have a hard time getting into them and have to be in the right mood.
Right off the bat, the atmosphere you keep here is perfect. The backgrounds combined with the music set up a perfect 80's slasher atmosphere that works very well. The writing isn't half bad either, if you're going for the 80's/90's slasher film style. It's pretty reminiscent of those.
I'm still going through as I'm enjoying it quite a bit. If you get around to add character portraits and maybe graphic representations of death scenes, I don't see why you couldn't monetize this.