Ok you can say anything about watamote, but AFAIK there is not a single other modern high school SOL manga with full female cast that has conversations about sex, dicks, jerking off and all kind of dirty jokes in it, let alone characters who actually had sex and don't try to hide it.
It's not often you see Futaki this shocked. So she has weak spot after all. And Minami...

Smoking after sex? Come on, who are you trying to fool, just say you ate hot dog and someone could believe you. I missed Fuuka and the gang and oh boy, remembering Fuuka's previous sexual themed antics it's gonna be good.