Seidou

Biodata

Feature	Information
Name	Seidou (青道)
Affiliation	Seidou High School
Occupation/Role	High school baseball team
Status	Active 1239
First Appearance	Chapter 14

History

Recruitment and first-year summer

Seidou recruited Sendou Akira and Sawamura Eijun from Akashi Middle School, with both ultimately choosing the school after a visit arranged by Takashima Rei. Their recruitment immediately drew attention at their middle school. 173

Sendou entered the starting lineup as a first-year center fielder wearing jersey number 8. He initially batted seventh in the Kanto Tournament, then moved into the fifth spot for Seidou's summer campaign. 192 217

The team reached the West Tokyo final for the first time in three years after defeating Sensen. Its offense was built around a core lineup that included Kominato Ryosuke, Isashiki Jun, captain Yuuki Tetsu, Sendou, Masuko Toru, and Miyuki Kazuya. 229 251

Competition	Result	Key outcome
Kanto Tournament	Lost to Yokohama Kohoku Academy	The defeat later became a major point of motivation for Seidou's Koshien rematch. 334
West Tokyo Summer Tournament	Champions	Seidou defeated Inajitsu to qualify for Koshien; Sendou's home run broke Narumiya Mei's resolve and reignited the batting lineup. 320 321
Summer Koshien	Champions	Seidou won its first Koshien championship, completing the revival of the program under Coach Kataoka. 433 435

National championship run

At Koshien, Seidou entered as the West Tokyo representative with a lineup promoted as “the best Batting Lineup in the nation.” The team faced Yokohama Kohoku Academy in its opening match, avenging its earlier Kanto Tournament loss. 334 338

Seidou's offense and defense were both viewed as markedly stronger than during the spring. Sendou's center-field range became a defining part of the defense, including a catch outside his normal coverage area that drew widespread praise. 338 356 358

Against Kiryu, Sendou reversed a two-run deficit with a seventh-inning home run off ace Hirobi Tate, turning the game into a 7–5 Seidou lead. 378

Following the championship, Seidou received the Victory Flag and held a school celebration. 435

Rebuilding after the championship

After the third-years' departure, Coach Ochiai joined Seidou's staff as a technical coach. Coach Kataoka also began using Sendou as a consultant, seeking his input on team plans and player development. 436

The team continued to develop its depth through practice matches, internal competition, and expanded batting facilities. Sendou contributed by offering advice on batting, base stealing, and the refinement of teammates' existing strengths. 551

Team Identity

“King Seidou”

Seidou identifies itself as the “King Seidou,” a title repeated in its pre-game rally. The team’s stated objective is to honor the school and dominate the Nationals. 217

“Who are we?!”
“King Seidou!!!” 217

Support and atmosphere

• Seidou travels with a brass band, cheerleaders, and dozens of non-regular players, creating a highly visible presence even before games begin. 217
• Its supporters adopted Sendou as a major attraction; opposing benches and fans have been known to sing his cheer song during games. 636
• After Seidou's victory over Inajitsu, the entire stadium chanted the school’s name alongside the team’s traditional cheer. 320
• The program’s popularity increased substantially after its Koshien title, drawing reporters, national fans, and professional scouts to training sessions. 446

Competitive Profile

Batting lineup

Seidou’s principal strength is its deep, aggressive batting order. Opponents have described nearly every non-pitcher in the lineup as capable of filling an upper-order role for another prestigious school. 229

• Sendou and Yuuki form a particularly dangerous sequence: Sendou pressures pitchers with extra-base power, while Yuuki is noted for converting key opportunities into timely hits. 360 364
• Sendou’s presence changes opposing strategy even when he is avoided; intentional walks and cautious pitching create opportunities for the hitters behind him. 627 648
• The lineup has repeatedly produced dominant tournament performances, including a 16–0 mercy-rule victory over Shichimori Academy. 555

Pitching staff

Seidou’s summer championship team relied on a flexible four-pitcher structure rather than a single pitcher carrying every game. Inajitsu prepared specifically for the different rhythms of Seidou’s pitching staff before their final. 262

• Tanba Koichiro — The ace whose recovery from injury and mental instability strengthened Seidou’s postseason prospects. 183 338
• Furuya Satoru — A power pitcher whose fastball exceeded 150 km/h and who also contributed in the outfield. 338 639
• Sawamura Eijun — A left-handed pitcher whose control, resilience, and changing pitches developed into a major weapon for the team. 616 873
• Kawakami Norifumi — A sidearm pitcher used as part of Seidou’s varied relay strategy. 247 262

Defense and baserunning

• Sendou serves as the centerpiece of the outfield defense; his speed, judgment, and range allow him to cover balls beyond a normal center fielder’s area. 356 358
• The infield is supported by the Kuramochi–Kominato combination, which has produced decisive double plays under pressure. 251
• Seidou trains base stealing and pick-off recognition as deliberate skills, with Sendou teaching teammates how to distinguish a real pitch from a pick-off attempt. 551

Key Personnel

Person	Position / Role	Notes
Coach Kataoka Tesshin	Head coach	Emphasizes individual responsibility, team psychology, and comprehensive player development. 14 626
Takashima Rei	Scout and team staff	Recruited Sendou and Sawamura; regularly supports player development and team planning. 173 436
Yuuki Tetsu	Captain; cleanup hitter	Led Seidou’s first-year summer team and formed a powerful offensive pairing with Sendou. 217 360
Miyuki Kazuya	Catcher; central lineup leader	Works closely with Seidou’s pitchers and is recognized as an elite catcher with improving offensive production. 909 1090
Sendou Akira	Center fielder; core batter and pitcher	A versatile all-rounder used as a central offensive threat, elite defender, occasional pitcher, and tactical adviser. 192 330 436
Sawamura Eijun	Left-handed pitcher	Developed from a relief option into a pitcher trusted with major starts and ace-level responsibility. 873 1139
Furuya Satoru	Right-handed pitcher; outfielder	A high-velocity pitcher whose performance and rivalry with Sawamura drive Seidou’s pitching competition. 338 639
Coach Ochiai	Technical coach	Joined after Seidou’s championship and focused on mechanics, rebuilding, and preparation for the Autumn Tournament. 436

Story Role / Major Arcs

• Return to Koshien — Seidou’s first-year summer team rebuilt the school’s reputation by reaching the West Tokyo final and defeating Inajitsu. 251 320
• Summer Koshien championship — The team overcame Yokohama Kohoku, Kiryu, and other national opponents to claim Seidou’s first championship. 338 378 433
• Post-championship rebuilding — The program adjusted to the loss of its third-years, incorporated Coach Ochiai, and developed younger players through fierce internal competition. 436 449
• Defense of its status — As reigning champions, Seidou faced heightened scouting, media scrutiny, and increasingly deliberate countermeasures from opponents. 555 636
• Second-year competition — Seidou continued pursuing Kanto and national titles while managing competition for roster places, the ace number, and positions in the outfield. 840 873