Hasegawa Subaru enters a basketball club of Nanashiba High School, but the activity of the club gets suspended because the club leader falls in love with an 11 year old daughter of the coaching teacher. Subaru's aunt asks him to coach a basketball club of elementary school girls. At first, he is reluctant to teach small girls, but he devotes himself to the club as he knows the complex circumstances of them.
Tomoka asks Subaru to help her with her homework on a Sunday at his house, to which he agrees. But she forgets her cellphone and the other girls, after failing to reach her, decide to create a dish specially for her. Meanwhile, Subaru asks Tomoka to have lunch with him and his mother and they find that Tomoka's mother, Kaori, has also dropped there for a visit. While shopping for ingredients for lunch with their mothers, Subaru and Tomoka meet Maho and the others, and the gang joins together for the meal at his house as well.