I think it was posible to avoid Eric getting anything sexual from Kira in the original, but I might be wrong. And Kira is different than Ann, with Ann we got no choice to do anything with her before she gets with Eric, so even if I don't like it I can get behind the idea of "stealing" her later. But if Eric gets with Kira in any of the warpaths and you can't avoid it, it will be a dick move, since we are having something with Kira at that moment, if Eric gets his hands on Kira it will be NTR, so I'm not ok with forced NTR or kinks in general, so I will not chalk it up to inevitability.
I'm not saying that it will be the case here, just that if it happens and you can't avoid it being in the warpath, then I will stop playing. In the ally path they can get what they want and just watch Eric fucking around if that's their kink, I just don't want to see Eric getting with any girl in the warpath, I have suffered him enought in the original and I can't stand him.