There's no NTR in this game, it's just cheating. Like another user said: "Where the protagonist is the perpetrator, it's technically cheating rather than netorare. If it involved someone elses love interest, then it could be netori, but that doesn't apply in this instance. Netorare is cheating, but it's from the perspective of the victim, which would mean husband would have to be the protagonist. Because netorare is essentially the feelings of jealousy, humiliation and angst aroused by the cheating or perceived cheating of a love interest of the protagonist, that then (sometimes) arouses sexual pleasure in them. In this instance that doesn't happen, so it can't be netorare. The player has to view it all through husband's eyes, but instead we see it through FMCs eyes. Therefore it's simply cheating and not netorare".