The novel opens with a conversation between a girl named Momochan and her friend, a second-year student named Shina San. The two girls are discussing the novel they have been working on. The girl wants to write an erotica about a sex scene, but she is afraid to do so because the other students have already written about it in their notebooks. The girls discuss how they will have to wait outside for the party to begin, and the girl says that she will not be able to sleep because of the heat. She is worried that someone will find her and take her away from the party.