Hey! I’m actually a big fan of this concept. I like the simplistic art style approach. I’m thinking that there could already be a couple tweaks to the writing which will allow yourself to set up “plot points” or storylines. If you’re serious about this game I wouldn’t mind trying to contact you further about writing changes or how to progress the story. I might be overstepping if you already have an idea of how you’d like things to go.
One more point I’d like to add, I think that the comments are suggesting some good ideas. The sandbox VNs dominate this space due to them being more interactive and I definitely think that this VN would benefit from this if that’s something you’ve considered.
-M