More NTR stuff? What NTR stuff? This game doesn't contain any NTR at all, yet. Well, since NTR is generally wrongly explained here as well, as if it were generally NTR when a woman has sex with men other than her own husband, I'll explain it again here.
So that NTR is really NTR, as it is defined by the manga, where the term actually comes from, there are the following requirements:
There needs to be a relationship (a simple stabile relationsship, being engaged or married)
At least one of them needs to cheat on his/her partner
The cheater needs to be "taken away" from his/her partner.
The last requirement makes the difference between cheating and NTR. "Taken away" means the relationship to break up and the cheater has to be permanently with his lover. It is so and not otherwise. It also doesn't matter whether the cheating is straight, gay or lesbian. Also not whether the protagonist does it or someone else in the game. It can also be a couple that has nothing to do with the MC at all.
In fact, Grind is too big in this game, it was enough to reduce Grind by half or implement a journal of tasks to be done on a given day