As someone whom isn't a fan of NTR myself, I really don't get why everyone gets so furious about the female characters. For starters, they are mostly family so they shouldn't be fucking MC anyway, (going by regular society standards), so it's not like them fucking other NPC characters makes them more or less whorish than fucking the MC would. To be honest, at least for Nichole, fucking Davide is less whorish than fucking MC because A, not family & B, there is at least the logic of maintaining the "cover" for the "investigation", (though make no mistake, Davide is still a scum fuck whom needs to die screaming. Not because of his sexual exploits, but because he's a scumbag criminal). Also, the female characters aren't dating the MC, (with the potential exception for Irena), so it's not like he's actually getting cucked. But even ALL of that aside, MOST important to keep in mind is that there really isn't any "official cannon" sequence of events. How you play dictates what happens. In my playthrough, Davide has been totally cockblocked because I kept relationship points high with all the girls. Which means in the iteration of my playthrough, the NTR shit just plain DID NOT HAPPEN. I didn't miss it or just wasn't exposed to it, It flat out didn't happen.
So instead of getting butthurt about the female characters fucking Davide & other male characters in the game, take action & keep the relationship points high so it doesn't happen to begin with. PRetty simple. Your decisions in the game decide what events do & do not take place.
Now that being said, Saddog really does need to make the game MUCH more balanced. There should be content evenly divided between the purity, corruption & NTR paths. IF he keeps putting the bulk of the content into the NTR route instead of spreading it more evenly, not only is the game itself & him as a dev going to wind up pigeonholed as an NTR dev whom makes NTR games, but it's going to severely affect the audience for his games too, as those whom aren't NTR fans will lose interest. The game has a lot of potential & pigeonholing it in just that one niche I think is a bad business move globally, (& I'd say that even if I was into NTR. Being a 1 trick pony is never a good business strategy). MAtter of fact, to be honest, it would actually be wiser to dump a shit ton more content in the corruption path as that would have the broadest range of appeal, with NTR & purity coming in second & third, ( & yes I am saying there should be more NTR content than purity content even though the purity path is actually my preferred path because I'm in the smallest minority, NTR being a larger minority & corruption making up the majority. Thats just being objective & practical about it from a business perspective).