Sorry if this come off as strong, but i also want to discuss this here to defend Mina actions.
kinda getting the vibe that everyone think cheating as like .
As a guy with open view, i think the idea itself is just as fucked up as any characters in this game, why she get karma? there will be consequences for her to try to be happy, because the target is her boyfriend's friend?? i've been cheated twice my life, first love and second love, so i can say Mina actions are way too meek, she's pretty much slap on the wrist of someone who stabs her back multiple times.
There are some important point, which i see while going through the game
1) Mina feel like she cannot trust ian, but he's her first, after an all girl school.
2) and she have never dated any other man, while ian fuck many other girls, which she knew, so it's not monogamy relationship in the first place.
3) Most IMPORTANT, Mina setting is that she's NOT the monogamy type either, she is a wild card and wouldn't mind an orgy itself if was comfortable enough, the only reason why she never done it is cuz she's doesn't feel safe enough with Ian.
4) to MC, friends are all important the same, old or new, proof is how he doesn't really remember bro's memories with Ian, mostly just Ian's affection toward MC from past event, so Mina is equally important to him, they're the only friend he have, seeing her unhappy with everything Ian did was hurting him too.
5) Ian is excited to watch Mina and MC kiss each other during the game, fine with MC being naked in front of her.
6) they're not married
twisted coupled, but not married, also only 10 months long
7) Attention, most important part here, MC is strong enough to resist the temptation at the club, and she have never really actively seduce him, kiss him during the game because he make her feel safe (which ian never do), ian okays with it and it's part of her personality, same with peeking, all the way to ian cheating part discovered. she didn't make an active approached, and MC make his choice "fuck it, i'm going along" (which is you actually)
After all things considered, i feel players should feel the action more deeply and not judge because you're used to having one guy who can have many girls but once a girl is with another guy it's unacceptable, close friend or not, why is that? Why blame Mina for consequences, if there is even any at all?
I mean, for me really, with these guys personality, what do you expect the result to be after MC try to mend Mina and Ian relationship? it just gonna be a threesome with both of them banging her down along the line in the end, or foursome, if others are involved,
none of these guys NEED a normal relationship. None
Thanks for reading this long ass essay.