The narrator tells us that he treats his ex-lover like a "little sister character" and that he wants to have sex with her. He also says that he's heard that Hiroyuki is already engaged, but he doesn't think it's likely that they'll fight over it. The narrator says that marriage is a good thing, but that she'd rather be alone right now. He says that even though he sees Hiroyuki at home, he isn't as different as he used to be. He's not sleeping in his own bed, he says, and that's why they're back together. He tells his sister that he can't leave her behind, even though she's like a sister to him. He wants to lock her up somewhere, so she won't have to listen to him anymore. He asks her to just do what she wants to do, which is kiss him, but she refuses to do it. She says that just kissing is not enough, and she'll have to do something else. She wants to cook dinner, but says that she needs to stop talking about sex. She tears up, she says, because she is the one who "chose this love," and she has to hide herself in it forever.