Arc 14Kōshū’s Spring Challenge
Kōshū led Seido to the Spring Koshien championship, then returned to school and began training with the new freshmen while refining his pitching. As Seido entered the Spring Tournament, he developed a sharp new pitch and looked ahead to facing Inashiro again.
- Kōshū pitched through exhaustion to defeat Hongo and Kyoma University, then shook hands with Hongo and promised to meet again in summer.
- Seido beat Seisho Company and won the Spring Koshien championship, with Furuya, Eijun, and Kawakami sharing the mound.
- Back at Seido, Kōshū helped welcome Yui Kaoru and the new freshmen, including Shimizu Osamu, while the coaches planned the team’s next roster.
- Kōshū trained Yui in the Bullpen and urged him to learn to catch Seido’s powerful pitchers, while Takashima asked Kōshū to guide Yui, Okumura, and Seto.
- Seido opened the Spring Tournament by mercy-ruling Eigen High School in five innings, with Eijun and Kawakami pitching.
- Kōshū and Miyuki worked on strategies for power hitters as Kōshū traded taunts with Narumiya Mei and anticipated facing Inashiro again.
- Kōshū tested a new Cutter in the Analysis Room and produced a fast, sharply breaking pitch that Ochiai judged beyond the high school level, though Kōshū could not reproduce it.