It's mandatory sex class at the school, and the girls are bummed out because they're supposed to be teaching it. They're also bummed because they don't really know what's going on with Sakuragi, who's apparently working as a sex worker for the school. The girls decide to leave him alone with the adults, and he looks more mature than usual. He's also working with "real adults" , and they decide not to tell him about it, since he's so cute. They go off to get some tea or coffee, and then the girls head back to class.