Ugghh gross, of course it had to be Rachel out of all the LI's that NTR's you -___-. I already hate NTR, but it's especially bad when it involves the childhood friend LI......Thank God I avoided that route. Idk, as a dev, sacrificing your characters just to add a fetish seems to be silly to me. Rachel knows the MC has been head over heels in love with her since childhood, her rejection caused serious trauma and almost destroyed their relationship. To have her intentionally cuck the MC completely ruins her character, and is simply cruel. At least it's optional, so I don't really mind. I just think choosing Rachel for that fetish is a very strange decision by the dev.
It's all based at the point where you get to choose the MC's character. Was like 3 choices Dominant, Submissive and a 3rd one I couldn't remember. I always just go Dominant MC so you don't get cucked/NTR'd in those scenes. MC ends up in that room having a gangbang instead lol or depending on choices at the party that scene can change. Like the roid chick cheating on her partner with some other chick lol.