(Mana and Yuri attend the same school. Mana is in the combined junior/senior high program, while Yuri joined from high school. Yesterday, Mana said something she shouldn't have to Yuri, and now Yuri has turned cold toward her. It's lunch break. In the cafeteria, Mana is eating with her usual group of five friends—six including Mana. Yuri is a second-year university student and is also there with her own friends.)