Dunno, I'm okay with light-hearted NTR, but this game I couldn't play long. It's too cuckish. They don't 'both cheat', it's just the wife pushes him to fuck other girls because she already doesn't care about sex with him and just doesn't want to be guilty for cheating on him. This moment, where it doesn't feel like the wife loves the husband anymore or respects him - was a big turn off for me. So yeah, it's a cuck game and the wife is mean to the husband. Also the corruption happens momentarily. Overall, it's just a badly written cuck game, really.
I mean this is another cuck trope and part of humiliation - she doesn't care about him and about what he does and with whom. He is so pathetic that he can't possibly make her jealous. There a strong vibe that the wife doesn't want her husband sexually anymore - she needs other men to be satisfied. It has nothing to do with swinging, more like an open relationship phase before divorce.