Ro-Kyu-Bu! SS

With summer vacation nearing its end, Tomoka is dismayed as her father doesn't approve of her focusing everything on basketball and doesn't want her going to a summer festival on the weekend. As Subaru contemplates going to Tomoka's house to talk with her father, he receives a call from Nayu asking him to accompany Tomoka to the festival. After winning a basketball stand with the promise Subaru would do anything for her, she requests that he watch the fireworks with her. Whilst taking Tomoka to the restrooms, Subaru briefly meets her father, helping him find his glasses. When he shows up again to take Tomoka home, Subaru and the others manage to stand up for her, convincing him that basketball has helped her make some fine friends. The next day, a mysterious French girl appears before Tomoka, challenging her to a game.

After Tomoka has a fun match against the girl, Mimi Balguerie, Subaru's father, Ginga, appears, who reveals Mimi is his basketball pupil who will be staying with them for a while. The next day, after Mimi transfers into Kagetsu's class at Tomoka's school, she appears before Takenaka, saying she wants to form her own team so she can have a rematch with Tomoka. Meanwhile, Subaru shows some concern when Saki informs him that her childhood friend, Masami Fujii, took a picture of them together at the festival. The two go to talk to Masumi, who had started disliking her due to a family business rivalry, persuading her to delete the photo after pointing out it won't help her business. Takenaka eventually manages to form a team of fifth years, consisting of Mimi, Kagetsu, Masumi and his two sisters, Tsubaki and Hiiragi, challenging Tomoka's team for gym usage. As the match gets underway, Mimi's team struggles as they are too focused on individual rivalries as opposed to working as a team. Half-way through the match, Ginga shows up, announcing he will act as the fifth years' manager for the day.

Under Ginga's tuition, Mimi's team manages to lead up to Tomoka's team, but the others manage hold their ground and win the game. Later Ginga compliments Mimi's team for their efforts, much to Natsuhi's surprise, even after Aoi becomes the fifth years' coach after seeng her talent in basketball. On next day Tomoka invites Subaru to her birthday party on weekend, so after school he asks Aoi to help him pick up a gift for Tomoka, to which Aoi unhappily agreed. During the party, the girls insisted to let the birthday girl (Tomoka) to sit on Subaru's lap, much to the later's embarrassment. Later Tomoka receives gifts from everyone: from Maho, Saki, Hinata and Airi - a basketball ball; from Aoi - a head ribbon; and from Subaru - a towel, which Tomoka accepts. Also on next day, Subura gives Tomoka another gift - a chance for both of them to master the "scoop shot" (or "floater") technique, and they happily have a training session like always.

Using their friend Uehara's contacts (given by hin in episode 3), Subaru and Aoi meet a candidate for their teem - Airi's older brother, Banri. However the meeting doesn't go well after Banri finds out that Subaru is Airi's rumored "perverted" coach and punches him without thinking. On next day, as the team prepares to practice on one basketball court, they are confronted by 2 middle school girls, who are coached by Subaru's old rival - Ryūichi Suga (to whom Subaru lost in a match in middle school, seen in the beginning), and challenges Subaru's team (with him, Tomoka and Airi) to a match, which the later lost, much to Subaru's anger. In the next few days, everyone agreeded to give their best before the upcoming rematch with Ryuuichi and Subaru manages to convice Banri to help out. One evening Tomoka comes to stay at Subaru's house for a sleepover to practice, much to his shock.

Under Maho's advice to help her with her shyness in front of Subaru, Tomoka is having a sleepover in Subaru's house. While there, at night, Subaru and Tomoka make a promice to do their best for the rematch. On the next day, Subaru and Tomoka show better results of their trainig, however, it doesn't go well for Airi and Banri as she can't get over her nervousness in front of him. While Hina is conserned about Airi, Banri gives Subaru the tape of Ryūichi so that can make the countermeasures against the other. While time passes, Hina tries to help Airi to get used to Banri's nature, while Tomoka and Natsuhi (since his pesonality an playing style are similar to Ryūichi's) help him to come up with a fake in the game. On the day of the rematch, while the others (Maho, Saki, Hina and Aoi who wear cheerleader outfits) cheer for Subaru, Tomoka and Airi, the trio manage to beat Ryūichi's team, even after a one-on-one, and claim the court for themselves.

After Aoi wins in the street lotery a free trip to Kyoto with Subaru, who was going to join the sixth graders' fieldtrip to Kyoto, this increases her neviousness of being with him, even when she's been having misunderstandings and wild imaginations of Subaru being surrounded by kids. It even doesn't go well for Subaru who had a bad day with underwear the whole day: 1) he and Natsuhi had to return Maho's panties while girls were in the bath, and having a pillow fight on the second occasion, which was succesfull; 2) when he accidentally catches Aoi in erotic underwear, given to her by her friends before the trip, which ruins her mood and makes her "feel to die". On their way home, Subaru manages to brighten Aoi's spirit up by giving a hairpin for being the fifth graders' coach.

After a series of training for the fifth graders under Aoi, Maho's father preposes a rematch with sixth graders' team.

Eventually, Tomoka's team won. In the evening, an unknown figure proposes a deal with the fifth graders.