Considering the existence of negative levels, amongst other advanced mechanics, it might be based more so on earlier editions. Hell, maybe even pathfinders
Oh shit, it's the type of NTR where the guy is just a loser who missed out on his chance to be with her because he's a creep and a loser. ALL GUILT FOR THIS IS GONE! LETS FUCKING GO NTR TRAIN! AND INCLUDE HER MOM IN IT TOO!