Even the "vanilla" route isn't that, since there are several unavoidable scenes where she gets fucked by other guys whether you want it or not. I also wouldn't say nothing is mean-spirited, considering a lot of the guys in this game know she's married to you but attempt to fuck her regardless; oftentimes trying to do it sneakily right in front of your face. Most of the guys are definitely mean-spirited and only care about satisfying themselves and anyone else be damned, or stealing her away from you.
Either way, the game is definitely a combination of straight cheating and ntr, given that while you control the female mc, you can cheat, and while you control the male mc, she can (and in some cases, unavoidably will) get fucked by others.