With the arrival of summer vacation, the girls go over to Haruka's house for a sleepover, which is a first for both Minami and Towa. During their stay, the girls participate in various activities, such as helping out at Haruka's restaurant, catching nagashi somen, and spitting watermelon seeds. Later, as Towa is troubled by bad dreams about Dyspear, Minami stays with her to alleviate some of her fears. Just then, Shut appears with a Fireman Zetsuborg, spreading dark fog to heighten Towa's fears, but Minami stands by her and helps to defeat the Zetsuborg.