Despite what others have said there is absolutely NTR in this one, I specifically remember an event where she gets gangbanged and the MMC does not like it at all and even secretly cries but pretends everything is all ok afterwards. There could be more, but I don't remember and haven't tried this in a while.
Thanks for this specific insight. I wish they'd talk about it instead. If the FMC is enjoying it and the MMC isn't, I don't care what the definitions say - makes him miserable BUT he bites the bullet, gives his approval, is that why it's not NTR? Fuck it, it is, I agree. The main thing is whether the scene is designed to cause negative emotions or not. What follows isn't criticism of this game, haven't even played the scene that you described. Just a rant loosely about why I think stating a game is NTR/NTS doesn't give you sufficient information.
A guy who secretly cries instead of facing people and facts is a simp. I mean, sure, characters can break down an humans do, but should get a grip on themselves and deal with it at the first opportunity. That's exactly the kind of scene/outcome I want to avoid, where the main character looks weak, or coping at best, if we're not given a chance to set things straight.
And that's why "NTS" is not sufficiently descriptive to me. A lot of "NTS" is still about submissive cuckoldry, humiliation, cruelty, simping. I like a broad sample of games where you can share your partner/LI, including ones where the FMC doesn't ask for "permission" before everything she does, as long as there's perfect understanding and the main characters remain mainly attracted to each other. It's a fantasy, for sure, where characters are adventurous and depraved but never get hurt. Don't care about the "realism ideology" that sustains that a majority of open relationships end in break-up, I prefer games that make me feel good. Pure escapism.
I actually think the scene you describe is BETTER than the MC having absolutely no reaction to the girls' doings, as with most "brothel sims" - just wish they'd gone all the way and made it a conversation between the main couple. If one of them is not ok with something, they shouldn't pretend to be, it makes them feel submissive and creates UNRESOLVED tension. They should talk about it and resolve the conflict. It also suggests that the FMC engaging in scenes like that doesn't spare a thought for her husband, which is strange (but normal in brothel sims) and feels like their relationship isn't all that tight.
I guess, ultimately, what I mean is that, for me to enjoy it fully, a game that has a roleplay element doesn't need to be "clean" of negative events, as long as the respective resolution is also presented and, at least as a roleplay option, the MMC can assert his displeasure and draw out a positive reaction from the FMC. Preferably, without blocking future content, but perhaps changing the characters' attitudes going into certain scenes (not sure how technically viable that is) Obviously, if the MMC is also sleeping around, the reciprocal is also true, the FMC could have her boundaries, too. As long as they communicate and show that their relationship matters.
Don't know how much this would be "complicating" the game, perhaps the gameplay is meant to be much more simple than that, but since there's also roleplay elements, and one of the main features is the ability to have the FMC (and other girls) offer sex to customers, tone and details do matter in how characters are perceived and how (at least, some) players experience events.