This is a great VN.
The only critique I have of it is that the dev made Alexis and Nikki both extremely attractive and extremely accessible. Why even bother with anyone else when the two most attractive characters are delivered to you on a silver platter so quickly? I don't have a personal issue with it, it's just something I can see making the emotional impact the dev would try to deliver in the future impossible if it doesn't affect either of their plot lines.
I also feel as if they tried to make Erynn a conventionally attractive character and missed the mark pretty drastically. She has the jaw of a heavyweight boxer. Her jaw is so masculine and powerful she could probably drink peanut butter with that thing. Looking at the polls her ranking doesn't surprise me at all as she has the cut and paste look of a post-op SoCal chick.
If I was the dev and wanted Erynn to be a hitter I would've aimed for a model that looked more like Kaylah from Hillside:
The level of attractiveness is incomparable IMO
Patreon in general doesn't allow incest content. I was surprised that this VN even somewhat teases it.
Putting myself in the dev's shoes it's something I wouldn't even flirt with.