
Eijun Sawamura is a pitcher who joins an elite school with a brilliant catcher named Kazuya Miyuki. Together with the rest of the team, they strive for Japan's storied Koushien championships through hard work and determination.
StatusReturning Series
TypeScripted
Original LanguageJapanese
Network

Specials of Ace of the Diamond premiered on November 17, 2014

Season 1 of Ace of the Diamond premiered on October 6, 2013
With a stray pitch that completely missed the batter, Eijun Sawamura loses his final middle school baseball game. Frustrated by this defeat, Eijun and his teammates vow to reach the national tournament once they are in high school. But everything changes when a scout unexpectedly invites him to Tokyo's prestigious Seidou High School after seeing the potential in his unusual pitching style. Encouraged by his teammates, Eijun accepts the offer, ready to improve his skills and play at a much more competitive level of baseball. However, now surrounded by a large number of skilled players, Eijun struggles to find his place on the team. He declares that he will one day become the team's ace, but that's only if fellow first year Satoru Furuya doesn't take the title first, with his breakneck fastballs that earn him a coveted spot on the starting roster. With the addition of these talented new players to an already powerful lineup, the Seidou baseball team aims to become the best in Japan, facing off against a number of formidable foes that stand in their way.

Season 2 of Ace of the Diamond premiered on April 6, 2015
After the National Tournament, the Seidou High baseball team moves forward with uncertainty as the Fall season quickly approaches. In an attempt to build a stronger team centered around their new captain, fresh faces join the starting roster for the very first time. Previous losses weigh heavily on the minds of the veteran players as they continue their rigorous training, preparing for what will inevitably be their toughest season yet. Rivals both new and old stand in their path as Seidou once again climbs their way toward the top, one game at a time. Needed now more than ever before, Furuya and Eijun must be determined to pitch with all their skill and strength in order to lead their team to victory. And this time, one of these young pitchers may finally claim that coveted title: "The Ace of Seidou."

Act II of Ace of the Diamond premiered on April 2, 2019
Picking up the next year after the end of the fall tournament, Seidou High School baseball team battle it out with new and old faces as they begin their tournament run at Koshien.

Season 4 of Ace of the Diamond premiered on January 1, 1970

逢坂良太
Eijun Sawamura (voice)

島﨑信長
Satoru Furuya (voice)

櫻井孝宏
Kazuya Miyuki (voice)

花江夏樹
Haruichi Kominato (voice)

浅沼晋太郎
Yoichi Kuramochi (voice)

山下大輝
Takuma Seto (voice)

武内駿輔
Masashi Yuki (voice)

内田雄馬
Koshu Okumura (voice)

村瀬歩
Kaoru Yui (voice)

畠中祐
Hirofumi Asada (voice)

福島潤
Kazuto Kotari / Yuto Kotari (voice)

梅原裕一郎
Soichiro Mima (voice)

佐倉綾音
Haruno Yoshikawa (voice)

諏訪部順一
Renji Enjo (voice)

小野大輔
Masamune Hongo (voice)