The summer festival arrives, and it is the only day Keita has free from his prep school work. Ako and Riko compete for the opportunity to spend the festival night with him, although they all go to the festival together. A number of incidents involving paraders enables both Ako and Riko to spend some time with Keita alone. They also have to contend with Yūzuki, who is patrolling the fair and catches Riko and Keita in the forest; Mikazuki, who is Miss Mikoshi; and a naughty chick that Ako bought which leads to Keita seeing Miharu peeing in the bushes. When Keita returns to his sisters, they barely recognize him due to the beating he received from Miharu.