just...how ntr is this game?
As I recall, there technically isn't any NTR. The closest thing to it would be towards the end when one of the male characters you had feelings for early on (and vice versa) ends up with another woman.
In spite of that, the game still manages to evoke NTR-ish feelings in the player. I'm not sure if there's a genre or name for what it does. It's corruption at it's core, but there's an extra layer of something else. Basically, as the MC, two of the decent non-rapey guys you try to pursue as love interests end up getting cucked. You never consummate your relationship with either of them despite getting very close. The plot always manages to place a barrier between you and them, so you end up settling for (and losing your virginity to) the scumbags and rapists. As an aside, one of the scummy dudes from the beginning that molests you several times ends up being a marginally decent human being as the story progresses. He becomes your secret lover of sorts.