A new key visual and teaser trailer have been released for the second season of Ace of Diamond Act II, which is set to air in April 2026 according to the series’ social media account.
The video only shows scenes of the Seido High School’s baseball team in action and does not introduce any opening or closing theme songs, or specific date for the premiere. However, the social media post confirmed the new season will broadcast on TV Tokyo-affiliated stations and on AT-X in Japan.
Staff for the upcoming season include director Hideaki Ohba, series composition writer Takeshi Konota adapting Yuji Terajima’s work, character designer Yasukaszu Toji, and composer Gen Momoishi. Animation production is being handled by OLM.

Appearing in the illustration, from left-to-right, are Satoru Furuya, Eijun Sawamura and Kazuya Miyuki.
Kodansha provided a synopsis of the series on their website:
Eijun Sawamura had his heart set on the middle-school national baseball championships. But his team is eliminated thanks to a wild pitch thrown by Eijun himself. He’s planning to go to high school with his teammates and try again next year when he’s scouted by the famous Seido High School Baseball team. When he goes for a campus visit, he finds himself on the receiving end of a baptism by fire! His experience forming a battery with up-and-coming catcher Miyuki rekindles his passion for baseball!!
Written and illustrated by Yuji Terajima, Ace of Diamond was serialized in Kodansha’s Weekly Shonen Magazine between May 2006 and January 2015; a sequel, titled Ace of Diamond act II, was serialized between August 2015 and October 2022. Kodansha’s North American branch published the manga in digital and print formats.
The manga was adapted into a television anime by Madhouse, spanning 126 episodes between October 2013 and March 2016. Subsequently, the first season of Ace of Diamond act II aired from April 2019 to March 2020, comprising 52 episodes.
Source: @diaace_anime
©Yuji Terajima, Kodansha / “Ace of Diamond actII -SS-” Production Committee, TV Tokyo
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