Arc 12From Autumn Champions to Winter
Kōshū helped Seido win the Tokyo Autumn Tournament and then faced Hongo and Kyoma University at Meiji Jingu, where Seido lost 0–2. Back home for the offseason, Kōshū considered his stamina and met a reporter who wanted to document his baseball career.
- Kōshū hit a three-run homer off Amakuhisa to give Seido a 5–0 lead, and Seido went on to win the Tokyo Autumn Tournament.
- Kōshū faced the Retirement Match, watched Yuki Tetsuya get drafted by the Yakult Swallows, and continued developing his Slider and fastball with Miyuki and Eijun.
- Seido advanced to the Meiji Jingu final against Kyoma University, where Hongo struck out Seido’s batters and Kōshū held Kyoma scoreless through seven innings.
- Miyuki reached base against Hongo, but Kyoma’s pitchers kept Seido from scoring, and Seido lost 0–2.
- After the game, Hongo exchanged contact information with Kōshū, who then stayed at Seido for the offseason and considered his stamina and a bone-density check.
- Kōshū returned home with Lang Zhi and agreed to meet reporter Yuan Jing, who said he would fund the early stages of a documentary about Kōshū himself.