because as soon as that crap apears in anygame i play where its not avoidable and didn't claim there would be at the very start.
then thats the game fucked in my opion, it will be spoiled for me and I will be pissed off but I won't complain I will just go play something else.
And yet, here you are complaining. Nah, but seriously . . .
There is no NTR is this game. Martin, as currently configured, goes after Maria (with whom you have no sexual interaction with until after Martin departs) and RESUMES A PREVIOUS RELATIONSHIP he had with Mimi (again, out of the MCs reach until after Martin). Hell, based on this you should be thanking Martin, making available 2 of the three hottest characters heretofore unattainable(I am partial to Mayo, though Vicky is so very close).
Martin is being built as a way for the MC to progress, and is easily disposed of once he outlives his usefulness. I hope he is developed to be able to nail Alice, Ako and Emily (if you are his wingman or otherwise let him alone). He is competition, so you must deal with him as you see fit. Besides that, it is just more (different) sex to view.
Hell, I hope Ako becomes a predator and takes a run at the ladies in your house. That would be hot!