Attack on Titan Day became official on September 9, 2026, when Japan’s Anniversary Association certified the date and the franchise marked it with a livestream, a new Isayama illustration, and a MAPPA-animated opening reveal for the Attack on Titan 3 video game.
The date broke on September 9, 2026, reported first by Anime Corner and confirmed on Attack on Titan’s official portal (aot-portal.com). It marks the first time in the franchise’s 17-year history that it has held an officially recognized anniversary date, tied to the day Hajime Isayama’s manga began serialization in Bessatsu Shonen Magazine back in 2009.
The Livestream and the 99 Announcements
The centerpiece was a live broadcast at 21:30 JST on September 9, hosted by three of the anime’s lead voice actors: Yuki Kaji (Eren Yeager), Yui Ishikawa (Mikasa Ackerman), and Hiro Shimono (Connie Springer). Kodansha branded the rollout as “99 announcements,” pairing it with a 99-hour free read of the manga’s first 99 chapters on the Magazine Pocket app, running from midnight September 9 to roughly 3:00 a.m. September 13 JST.
What Was Genuinely New
Three things came out of Attack on Titan Day that did not exist before September 9: a new Hajime Isayama illustration featuring Eren and Levi, a commemorative “Nine Titans” key visual with a logo inspired by the Doomsday Titan, and the franchise’s first official YouTube channel, which will carry limited-time anime streams and exclusive video. On the theatrical side, Attack on Titan Part 1 -Guren no Yumiya- returns to Japanese theaters October 23, 2026 in ScreenX, 4DX and ULTRA 4DX formats, with Attack on Titan THE LAST ATTACK getting the same treatment in 2027 — its first-ever ScreenX release.
What Was Actually a Repeat
The biggest-looking headline of the day — Koei Tecmo’s Attack on Titan 3 video game — is not new information. The game’s December 10, 2026 release date for PS5, Nintendo Switch 2, Xbox Series X|S and PC was locked in and announced by Koei Tecmo America back on August 3, 2026, over a month before Attack on Titan Day existed. What Attack on Titan Day actually added was narrower: a new opening animation key visual for the game, animated by MAPPA. Treating the game’s release date itself as “Attack on Titan Day news,” as some recap coverage implied, overstates what changed on September 9.
| Item | Status on Attack on Titan Day | Originally announced |
|---|---|---|
| Sept. 9 as official “Attack on Titan Day” | New — certified this week | Sept. 2-3, 2026 |
| Isayama illustration (Eren, Levi) | New artwork | September 9, 2026 |
| Nine Titans key visual + logo | New artwork | September 9, 2026 |
| Official YouTube channel | New launch | September 9, 2026 |
| AoT3 MAPPA opening visual | New visual only | September 9, 2026 |
| AoT3 release date (Dec. 10, 2026) | Repeated, not new | August 3, 2026 |
| Theatrical Part 1 rerelease (Oct. 23) | New date | September 9, 2026 |
Frequently Asked Questions
What is Attack on Titan Day?
September 9 is now an officially certified anniversary date for the Attack on Titan franchise, registered by Japan’s Anniversary Association to mark the day the manga began serialization in 2009.
When does Attack on Titan 3 release?
Koei Tecmo’s Attack on Titan 3 launches December 10, 2026 on PS5, Nintendo Switch 2, Xbox Series X|S and PC — a date confirmed back in August 2026, not new to Attack on Titan Day.
Can I read Attack on Titan for free right now?
Kodansha’s Magazine Pocket app is offering the manga’s first 99 chapters free for 99 hours, from midnight September 9 through roughly 3:00 a.m. September 13 Japan time.
Is a new Attack on Titan anime coming?
No new television anime was announced on Attack on Titan Day. The announcements were a game visual, theatrical rereleases, new artwork, and a new YouTube channel.
Who hosted the Attack on Titan Day livestream?
Voice actors Yuki Kaji (Eren Yeager), Yui Ishikawa (Mikasa Ackerman) and Hiro Shimono (Connie Springer) hosted the September 9 broadcast at 21:30 JST.
Read next: our earlier report on the Attack on Titan Day certification · how the Nine Titans powers work · Attack on Titan’s strongest villains, ranked
Sources: Attack on Titan’s official Day portal · Koei Tecmo America’s original release-date announcement · Anime Corner’s full announcement recap
