Is there even any NTR in this game, lol? The most you get is the scene on the train with Minami, which leads to a bad ending and a branch that will probably never be completed.
I think that on the path of bad karma, it will be possible not to have pure classic NTR when the main character is cheated on, but a kind of Netorase, when the main character will use girls for his own benefit or just for fun (there have been references to this in the game for a long time, and they are only increasing).
But again, all this seems so far in the future that I'm not sure we'll live to see it...
i just played through the part with Rachel giving us the vivid nightmare where she slashes MCs chest. in this section it was mentioned that there will be 3 girls that will be key to completing MCs revenge scheme and Motoko and Maki were there obviously, but Rachel transformed into the 3rd who was assumed that she was supposed to be Shirohime. but what if that was actually Kayane? Kayane being Shirohimes sister probably was born with white hair as well and the pink is just dye so she could differentiate herself from her sister and the family she hates so much! with her on the MCs side he would have the backing of 3 of the 4 families in his attempt to overthrow their plans! While Shirohime joining forces with the MC seems kinda unlikely, the chances of Kayane joining him as an ally are better and would still make Rachels prediction/vision true!
this is just my opinion and what i put together from whats been going on so far! i could be completely wrong!