So enjo-kosai is more titillation with occasional “Oops!” Accidental sex, not even sugar baby stuff, and open fam is South American/Filipino style “The only virgins are the girls who can outrun their cousins” except with no pretense that the university educated aren’t engaging. Lots of people publishing under their real names about their experiences and how it’s good. Wait, this is just 70s France, isn’t it? Some people don’t approve but they don’t talk about it much.