I duno... the game kind of seemed like just voyeur from the beginning. They pretty much never captured the feel of real NTR imo. There were scenes early on where he was uncomfortable I think, but other times he is surprisingly cool about it. Maybe I just remember things wrong and the change just happened right when the writer changed.
To be fair, the NTR tag in F95zone is woefully non specific. Even worse, the people who complain about "NTR" pretty much lumps all manner of voyeur, cuckold, netorase, rape, groping, cheating, existance of male NPC as NTR. The game is more of a netorase where MC wants the females around him to bang other dudes. It's actually much much closer to just voyeur though. Not that there is anything wrong with that, but it certainly will be disappointing for the true NTR connoisseur.
I don't know about you, but when I want NTR, I want hard NTR where MC just feels miserable and gets all the girls stolen. When I want alpha dom stuff, I wan't balls to the walls male dom where you mind break all your family. This is why The Tyrant is awesome even with all the flaws it has. It indulges each of these fetishes without holding back.