Seiya gets a summer cold but he can't afford to skip school due to his earlier absences. Sento, Macaron, Tiramie and Moffle wear a realistic suit of his body one person per day and attend school in his stead. On the first day, Isuzu finds a love letter in Kanie's shoe locker but the sender, Tsuchida Kanae, had only mixed up his locker with someone else. As Sento tells her inspiring words, Kanae ends up developing feelings for Kanie instead. The next two days end up with disgusting incidents due to the mascots' behavior, while the forth day ends peacefully due to Kanie wearing a suit of a boy to whom Kanae had tried to send the letter originally, Kimura, and lying that all the disgusting acts from 'Kanie' the days before were meant to drive Kanae back to Kimura by making her hate Kanie.