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Seido High's title chase is back on the calendar. The second part of Ace of Diamond Act II Second Season (Diamond no Ace) premieres in October 2026, picking up right where the April cour left off — and yes, it's heading to Netflix Japan alongside its TV run.
Quick answer According to SenpaiRanks, Ace of Diamond Act II Second Season Part 2 premieres in October 2026 on the TV Tokyo network (TXN) and AT-X, with streaming on Netflix Japan. It's animated by OLM with animation support from Madhouse, directed by Hideaki Oba with character designs by Yasukazu Shoji. GLAY performs the opening theme and OxT the ending. It adapts the final stretch of Yuji Terajima's manga (34 volumes, concluded October 2022). SenpaiRanks tracks the franchise's Act II entry at a 7.81 adjusted score on its baseball/sports board.
Where it picks up Part 1 debuted April 5, 2026, and Part 2 is the second cour of the same season — no new arc reset, just the back half of the run. The new key visual leans on the franchise logo and tournament framing, signalling the bracket pressure that Act II has been building toward.
The trailer The latest promo for the October cour:
The team behind it OLM handles production with Madhouse on animation, Oba in the director's chair (taking over from Mitsuyuki Masuhara), Shoji on character design, and Hajime Hyakkoku scoring. The returning main cast keeps the dugout intact.
Where it lands on the board Act II holds a 7.81 adjusted on SenpaiRanks — and for a long-running sports series, our two-axis split is doing real work: it separates "fans love it" (Consensus) from "the baseball actually holds up across hundreds of episodes" (Quality). MyAnimeList gives you one number; we show both. If you're stacking your sports-anime queue, Aoashi Season 2 is the other big one this cycle, and the broader October slate is on our what to watch this season hub. Mission: Yozakura Family shares the same October window.
The call If you've ridden 200-plus episodes of Seido baseball, October is non-negotiable. New here? Start with the Act II ranking, then follow Act II Second Season and log your own score as the season airs.
Frequently asked questions Q: When does Ace of Diamond Act II Second Season Part 2 release? A: October 2026, on the TV Tokyo network and AT-X.
Q: Where can I watch it?
A: It airs on TV Tokyo (TXN) and AT-X in Japan, with streaming on Netflix Japan.
Q: Who performs the theme songs?
A: GLAY performs the opening and OxT performs the ending.
Q: Which studio animates it?
A: OLM produces, with animation support from Madhouse; Hideaki Oba directs.
Q: How is Diamond no Ace ranked on SenpaiRanks?
A: The Act II entry holds a 7.81 adjusted score on the board.