Momoni is a new girl, but her reputation--both as a volleyball player and a total brat--precedes her! After causing a scene at the Hokuei summer festival, Momoni is forced to join Sota's team. Sota's a lucky dog, as usual, but the other girls in his harem cannot stand Momoni, especially after she sticks her nose into Sanae's weight, and relationship, problems! Can Sota smooth everything over with his classic bedside manner, or will the team explode?