After playing this game for a solid 5-6 hours and being interested of the NTR path, I had to tap out. Other than a few scenes with Ann and Kira, I didn't find much more. There was the teasing with Eric and Alice and even after ending the friendship path, not much was happening.
I think I'm going to come back to it when it's at least version 10 because right now, the friendship path is not really worth it and while I appreciate the detailed walkthrough, it's confusing as hell as to what will cause the NTR events.
I have seen the screenshots of Eric with Ann, Kira and Alice but I guess one has to do a ton of grinding before getting to the good stuff.