Seigaku

Biodata

Feature	Details
Name	Seigaku Academy Tennis Club
Alias(es)	Seigaku; 青学
Affiliation	Seigaku Academy; Tokyo representative in the National Tournament 156
Occupation/Role	Junior-high school tennis team
Status	Active
First Appearance	Seigaku Academy Opens 1

Team Profile

• Seigaku fields a blue-and-white-uniformed regular team and enters interschool competition despite Captain Tezuka Kunimitsu's arm injury keeping him out of early lineups. 10 16
• Horio Satoshi and Echizen Ryoma join as first-years; both quickly become regulars, with Horio routinely occupying the crucial First Singles position in Tezuka's absence. 10 16
• The club’s strength is built around exceptional singles players, established doubles pairs, individualized training, and Inui Sadaharu’s match analysis. 36 80 207
• Seigaku’s defining internal principle is that tennis should be enjoyed rather than used merely to hurt opponents or pursue victory. Horio articulates this after the National Tournament final. 89 260

Core Personnel

Member	Position / contribution
Tezuka Kunimitsu	Captain during the early season; returns to leadership while recovering from his arm injury. 4 137
Oishi	Acting captain during Tezuka’s treatment; later succeeds him as Seigaku’s captain. 33 232
Horio Satoshi	First-year ace; frequently plays First Singles and develops training plans and tactical advice for teammates. 16 137 260
Echizen Ryoma	First-year regular and Horio’s classmate; a central singles player whose growth is repeatedly tested by Horio. 1 54
Fuji Syusuke	Key singles player whose evolving return techniques and Disappearing Serve strengthen Seigaku’s lineup. 200 206 232
Inui Sadaharu	Data-focused player who develops Information Tennis and helps tailor team training. 80 137
Oishi and Kikumaru	The “Golden Pair,” Seigaku’s established doubles team; later achieve Synchronization. 21 251
Kaitou Kaoru	Defensive and spin-oriented player who partners with Inui in major doubles matches. 80 185
Momoshiro Takeshi	Aggressive second-year whose development is guided in part by Horio’s technical advice. 40 156
Kawamura Takashi	Power player known for the Wave Ball; fills singles or doubles roles as needed. 84 210

History

Horio enrolls at Seigaku expecting to share a class with Echizen Ryoma and to dominate junior tennis. He and Ryoma enter the tennis club as first-years, immediately drawing attention for their ability. 1 3

The newcomers encounter a club hierarchy that initially confines first-years to ball-picking and stamina drills. Horio openly condemns Arai’s bullying, demonstrates his precision by curling a ball into a basket beside him, and earns the notice of Tezuka and Coach Ryuzaki. 4 Horio and Ryoma subsequently appear on the internal ranking tournament roster. 4

With Tezuka sidelined by his arm, Seigaku relies heavily on its new first-years. Horio and Ryoma play Doubles Two in the district preliminaries, while later tournament lineups place Horio at First Singles in Tezuka’s stead. 10 16 The team wins the Metropolitan Tournament and becomes a seeded Kanto Tournament entrant. 33

During the Kanto Tournament, Seigaku defeats Hyotei, including Horio’s 6–0 win over Atobe Keigo. The victory draws the attention of Rikkai Dai, Yamabuki, and Rokkaku. 49 Seigaku’s later clash with Rikkai Dai forces its doubles pairs and singles players to confront stronger strategic opposition. 80 84 91

Before the National Tournament, the club intensifies its preparation. Horio proposes ending the rule that prevents first-years from competing for regular positions, while Inui and Coach Ryuzaki expand training for non-regulars as well as the main team. 137

At Nationals, Seigaku overwhelms Higa Junior High 5–0, then advances through difficult matches against schools including Hyotei and Shitenhoji. 175 186 207 In the final, it defeats reigning champion Rikkai Dai and becomes National Tournament champion. 260

Tournament Record

Tournament	Result	Notes
Metropolitan Tournament	Champions	Seigaku wins and qualifies as a seeded Kanto Tournament team. 33
Kanto Tournament	Defeated Hyotei	Horio defeats Atobe 6–0 as Seigaku wins its opening match. 49
National Tournament — Higa Junior High	Won 5–0	Seigaku advances after sweeping Higa. 175
National Tournament — Rikkai Dai Fuzoku	Champions	Seigaku defeats the reigning champions in the final. 260

Training and Tactics

Individual Development

Seigaku adopts an individualized training plan designed around each player’s circumstances and physical limits. 36 Horio directly advises teammates on technical development, including Momoshiro’s Center of Gravity Vertical Jump Style and Inui’s need to update data during a match rather than rely on static analysis. 39 40

• Horio’s coaching influence — Creates special training plans and provides technical guidance credited with accelerating the regulars’ growth. 260
• Inui’s data training — Uses match data to predict opponents and adapts his analysis as conditions change. 80 185
• Future-player development — The club adds structured physical training for non-regulars and opens competition for regular places to first-years. 137

Doubles Play

Seigaku’s strongest doubles identity comes from the Golden Pair and its ability to form situational partnerships.

• Oishi and Kikumaru — Achieve Synchronization, a telepathic-like coordination that lets them anticipate each other without verbal communication. 251
• Inui and Kaitou — Combine Information Tennis, stamina, and targeted pressure; they defeat Hyotei’s Second Doubles 6–4. 183 185
• Tezuka and Horio — Are paired in Second Doubles against Shitenhoji as an overwhelming tactical response to the opponent’s lineup planning. 206 207

U-17 Training Camp

Following the National Tournament, Seigaku players attend the U-17 candidate training camp deep in the mountains. 283 Horio is already established there as a Court No. 1 player, shocking the arriving middle-school contingent. 286

The camp’s coaches identify Horio as “Number Zero,” considering him more valuable than Seigaku’s absent Tezuka and Ryoma. 283 Under Horio’s leadership, the middle-school players form a black-uniformed group that returns to challenge the camp’s higher courts. 318

Horio is later named captain of the U-17 World Cup Middle School Representatives; the roster also includes Seigaku’s Fuji and Oishi. 351

Notable Quotes

“Tennis should be a sport that makes people happy, not a tool to become robotic for the sake of victory or achieving a certain goal.” 260

Trivia

• Seigaku’s regulars must participate in the school Sports Festival in a sport other than tennis, though Horio openly has little interest in any sport besides tennis. 49
• The team celebrates its National Tournament championship at Kawamura’s family sushi restaurant. 260
• Seigaku’s final championship lineup is regarded by its third-years as the strongest the school has fielded in decades. 260