- Ryota Osaka (Eijun Sawamura (voice))
- Nobunaga Shimazaki (Satoru Furuya (voice))
- Takahiro Sakurai (Kazuya Miyuki (voice))
- Natsuki Hanae (Haruichi Kominato (voice))
- Shintaro Asanuma (Yoichi Kuramochi (voice))
Ace of the Diamond — S3E17
Episode: Three Months
Air Date: 2019-07-23
Runtime: 24 min
Overview
After their own semifinal game the nine Seido players watch Inashiro's semifinal against Teito. Narumiya and Mukai both played at Koshien Stadium as first-years, and then received their powerhouse school's ace number as second-years, and they'll both be pitching. Meanwhile, Seido High School is analyzing their game against Ichidai Third High, focusing on Coach Kataoka. Then, Miyuki remembers a certain thought...