Shizuku wants to know more about Haru’s past, but it is a difficult subject for him. She learns more than expected when Haru’s brother meets her at school.

It’s the day of the festival and tension runs high between Haru and Shizuku. With Yamaken causing trouble, Natsume trying to help her friends, and Shizuku pushing everybody away, the group might be a verge of a breakdown.

It’s Christmas time and the mysterious Summer X has been planning a party for months. The party takes a turn when a group of delinquents invite themselves to the festivities.