I think yourself and many others are taking thing to seriously. This game is overall light hearted fun where the plot so far, serves to move from one sex scene to another and this is where the game truly shines and quality is, in the sex scenes.vanilla content in this game is pointless. First of all there is no real connection between MC and girls - no romance/feelings/lovey-dovey stuff etc. Even he and his GF doesn't look like real couple, more like fuck buddies like rest of the girls and nothing more. It's even hard to call this game a proper NTR in that setup
I read an earlier post where someone complained that the gf was cheating to early and it assasinated her character, haha. As long as its not way out there its irrelavant, everyone wants to see her get fucked as much as possible and the scene was really hot. Its why the game became so popular to begin with. This is the 4th update and the game has 10+ women, equal males and at least double the amount of sex scenes and people are complaining about depth of character or plot holes ... Just enjoy it for what it is or move on.