The scene opens with a flashback to the day of a drinking party in which the narrator is introduced to his sister, Mochida, who has just returned from a trip to Europe. The two have been introduced to each other at the party, and the narrator confesses that he has fallen in love with her. When she asks him what he thinks of her, he replies that she has come to like her, and that she is attracted to her because she has sex with her lover, yanagi. When he asks her what she thinks of him, she replies that he is not interested in her, but that she wants to know more about him. When the narrator asks what she will do if she does not answer his questions, she responds that she will not answer him, but she will kiss him. The scene then shifts to the bedroom where the two are having sex. The narrator, blushing, asks if she is being touched by her lover. She replies that her lover is her partner, and they are doing the same thing in her room. She asks him if he is okay with her, to which he responds that he does not think she is lewd, and she can put her fingers in easily when he squeezes her.