Well, the MC gets his confidence from his "evil twin", so the phonecall at the start where he can tell he's hearing voices will be the trigger to enable NTR content, because that way, he'll stay a little wuss. Also, LostRaven has already said that Darnell won't be the only one doing the NTR. Sure, he'll be a large part, but others will also steal your girls. As for Danny, without the MC controlling "Viviane", "Viviane" will be more assertive and will be the one who does the cucking (which is why I'll also be playing the NTR path, there's just something about Danny).