We fans know how Grand Blue became a comedy giant in anime. From absurd diving club jokes to the awkward but growing bond between Iori and Chisa, this anime has a lot of content for us fans. After Season 2 closed its run, naturally, all we want to know is when Grand Blue Season 3 will be released.
Season 2 officially aired in Japan from July 7, 2025, to September 22, 2025, with 12 episodes broadcast on Tokyo MX and BS11. About Grand Blue season 3, let’s discuss what the situation is now.
When Is Grand Blue Season 3 Release Date? Announced!!
Grand Blue Season 3 was officially announced right after the broadcast of Episode 12 on September 22, 2025. The update was first shared on the official X account (@gb_anime) along with a new key visual. Japanese outlets like Comic Natalie, Eiga.com, and Animate Times confirmed that the next season will take the story to Palau. This marks the first time the anime leaves Japan for an overseas diving setting, which lines up perfectly with the Palau arc in the manga.
At this stage, no broadcast date, cour count, or staff sheet for Grand Blue Season 3 is released. For comparison, Season 2 was announced on September 29, 2024, and it aired from July 7 to September 22, 2025.
That would put the likely release of Season 3 around mid to late 2027. Once production and marketing are complete, we will get further news. For now, the safest place to follow new updates is the Grand Blue official site and the verified X account, since both carried the Season 2 and Season 3 announcements first.
How Season 2 of Grand Blue Ended for Fans
Season 2 wrapped up with the uninhabited island camp arc, one of the funniest yet most revealing stretches of the manga. Episode 12 shifted from slapstick to a subtle change in Iori and Chisa’s dynamic. During the camp, Chisa gets drunk, ends up in the sea, and later changes clothes inside a tent. When Iori accidentally walks in, the diving club decides to punish him by tossing him down a cliff for a short survival challenge.
In the aftermath, Chisa starts avoiding Iori, not because of anger but because their relationship has begun to feel different. They no longer act only as cousins but start seeing each other as a boy and a girl.
What Story Will Grand Blue Season 3 Adapt From the Manga?
Grand Blue Season 3 will begin right after the island camp fallout, where Season 2 left us. In the manga, these events appear in the early 40s chapters.
The next material lined up includes:
- Post-island camp and home visit chapters (late 40s,)
- The Palau arc (roughly chapters 50–57)
- The Okinawa 2 trip (around chapters 61–69)
For context, Season 1 adapted the manga up through chapter 21, while Season 2 covered material up to the early 40s. That leaves Season 3’s natural runway starting in the high 40s, with enough content for at least one solid cour. The Palau arc and Okinawa 2 are widely recognized as standout parts of the manga, so fans can expect a perfect mix of bigger dives, new locations, and sharper comedy.
Wrapping It Up
Grand Blue has earned its place as one of the most beloved comedy anime in recent years. From outrageous humor to unexpected character growth, every season has kept fans loyal. Season 2 ended, leaving the fandom already dreaming about a Season 3. With the official confirmation, all signs point to a potential release window around 2027 if the production cycle follows the same pattern.
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