During the tournament combination drawings, Seigaku learns of their next opponent, Hyotei Academy. Meanwhile, in preparation for Seigaku's next match, Kaido trains especially hard in order to perfect his Boomerang Snake, in which Inui decides to help him with for a price: to become his doubles' partner. Also, Hyotei's rigorous regular selection process is revealed.

Seigaku arrives at the tennis court for their upcoming match, but Shuichiro Oishi, who bumps into a pregnant lady on his way to the match, ends up going to the hospital to take care of her. Takeshi Momoshiro runs over to take Oishi's place at the hospital, only to find out that Oishi himself is also injured, so the latter encourages Momoshiro to take his place.

Due Oishi's absence, Momoshiro ends up playing doubles with Eiji Kikumaru, but the latter is unable to play to his fullest. However, once Eiji gets used to Momoshiro's presence, he begins to play in his normal play style. Oishi later shows up to cheer for them on the sidelines, encouraging the two to play to their fullest.

After Momoshiro and Eiji beat their opponents, Sadaharu Inui and Kaoru Kaido play against Ryou Shishido and Choutarou Ohtori pair. To start off the match, Ohtori shows them his Scud Serve, a super fast serve verging on 200 km/h. Since the serve was not in Inui's data, the pair has difficulty in trying to return it.

Neither Inui nor Kaido can react fast enough to Ohtori's Scud Serve, even after Kaido removes his weighted wrist bands; which grants him more speed, but still not enough to return the Scud Serve. As the Seigaku pair struggle, Keigo Atobe, Hyotei's captain, reflects back on how hard Shishido and Ohtori trained for this.

As Inui reveals that he only needs data on Shishido and Ohtori because he has completed all the others, his past of how he took interest in Data Tennis is revealed. After Inui gathers the required data, Inui and Kaido finally make a comeback. However, even after Kaido reveals he has mastered his Boomerang Snake technique, the other team still proves formidable as they are able to return it.

Munehiro Kabaji and Takashi Kawamura battle it out with a power duel.

Kawamura uses the one and two-handed Hadokyu, but Kabaji copies it. It then becomes a duel of whose arm will last longest.

Shusuke Fuji wants to pay Jirou Akutagawa back for defeating Yuta, and he also wants to win for Kawamura, who was injured along with Kabaji. Fuji thus reveals a very special serve.

Fuji shows the last of his Triple Counter, Hakugei, and defeats Jirou.

Short stories involving super deformed versions of the characters; includes "Super Soldier", "Beware of Snow White?!", and "Jump out! Seigaku".

Kunimitsu Tezuka, Seigaku's captain, faces off against Atobe, while Oishi reminisces about his promise to Tezuka: they would take Seigaku to the Nationals; and how Tezuka's arm was injured when they were first years.

Atobe shows his special two-part smash, the Rondo Towards Destruction.

Tezuka continues to use his left hand, even though he is aware of the injuries he may further sustain.

Atobe and Tezuka continue the match, and enters a long tie-break, until Atobe finally wins. Ryoma then plays the last match against Wakashi Hiyoshi, and wins with his Drive B.

Kachiro Kato, a Seigaku freshman, gets upset with Masashi Arai and his friends for being insensitive to the regulars who have injuries. They battle it out on the courts, and whoever loses has to quit the tennis club.

During Seigaku's club day, Ryoma participates in ping pong, while other members of the team participate in various sports as well.

n Tachibana asks Momoshiro and Ryoma for a tennis date, but the others see it differently.

Kaido is forced to impersonate Ryoma due to a mistake in a tennis magazine by Shiba, a reporter, and ends up playing a match with Momoshiro.

Oishi tells everyone to come at midnight for a surprise trip to the mountains. Tezuka later reveals his decision to leave for Germany.

Tezuka challenges Ryoma to another match using his right hand, and successfully uses the right-handed Tezuka Zone against him.

Ryoma finally breaks the Tezuka Zone, but still loses in the end. Tezuka leaves for Germany.