Ace of Diamond Act II Second Season's Second Cour Premieres October 2026

A second cour set for October 2026

The official account for Ace of Diamond Act II Second Season has announced that the series will return for its second cour in October 2026. According to the production's posts on June 28, the new cour will broadcast on TV Tokyo's six-station network and AT-X, picking up immediately after the first cour wrapped with its thirteenth episode the same day.

The reveal arrived right after that finale aired, and the staff paired it with a fresh teaser visual carrying the tagline "there is no giving in, not this summer."

What the new visual shows

The teaser visual centers on two pitchers squaring off: Kazuya Miyuki of Seido and Mei Narumiya of Inashiro Jitsugyo. The framing sets up the Western Tokyo tournament final between the two schools, the matchup the second cour is built around. The production describes the artwork as a design of Miyuki and Narumiya in direct confrontation, leaning into the rivalry that has run through the franchise's later arcs.

Opening and ending themes

Alongside the premiere window, the staff confirmed the music for the new cour. GLAY will perform the opening theme, while OxT handles the ending theme. The production framed both as adding flourish to a cour that dramatizes the decisive final game.

Where the story stands

Ace of Diamond is a sports franchise following Seido High's baseball team and its brash left-handed ace, Eijun Sawamura. The television series first aired in 2013 and ran for 75 episodes, and the Act II continuation followed in 2019 across 52 episodes before Act II Second Season began its run on April 5, 2026. That latest season's first cour ran thirteen episodes and closed on the brink of the Western Tokyo final, the stage the upcoming cour is set to dramatize in full. The cliffhanger placement explains why the production saved the second-cour reveal for the moment the thirteenth episode finished airing.