When the wind gets cold, the two of them go for a walk together. They're still young, but they're siblings, so they don't care what happens to their parents. The narrator asks the two if they've ever had an affair, and they both admit that they did. When the narrator asks what happened to her father, the girl says that he was her first love, and that she ran into him after school and walked home to find him. She also says that she's been flirting with hina a lot lately, and she thinks that hina is flirting too much with boys. She asks the girl if she can copy her English notes, and the girl tells her that she likes to talk to boys, too. The girl then asks the boy if he's a second-year student, and he says yes. He also tells the girl that he teaches third- and fourth-year biology at his school, and one day he runs into her again in his fourth year. He says that they are the "worst kind of scum," and that he still thinks it's the right thing for the girl to do, but he doesn't know what else to do. He thinks they should start dating, since the girl is a "mod eled" after him.