Grand Blue Dreaming Season 4 Release Date and What's Next

Grand Blue Dreaming (Guran Buru) fans have gotten really good at one thing this year, and that is waiting. Season 3 is almost done, and the group chats are already flooded with theories about a possible Grand Blue Dreaming Season 4, when it might show up, and how much manga content is left to cover.

What Has Season 3 Been About So Far

If you jumped in late, here is the quick version. Season 3 kicked off with Iori and the gang heading to Palau, then eventually looped back to more familiar chaos at home. The real heart of the season though has been Iori and Chisa slowly, almost accidentally, becoming a real couple in everything but name. It has been a fun ride watching two people who spent two seasons pretending finally act like they actually like each other. As senior club member Ryūjirō Kotobuki once put it in Season 1,

"If you only stick with what you already know, you'll never get anywhere. What's important is whether you're interested or not" - Ryūjirō Kotobuki

Along the way we got the usual nonsense too, drunken cooking disasters, a naked chestnut fight that somehow escalated into a volleyball match, and Kohei's lookalike showing up again just to mess with everyone's heads. Then came the Okinawa trip, which honestly felt like a different show for a bit. Genuinely sweet, low on chaos, high on chemistry. You can binge the whole run on Crunchyroll if you want to catch up before the finale drops.

Episode 12 Release Details

Episode 12 lands September 21, 2026 same Monday 8:30 a.m. PT slot as always with English subs, and it looks like this one will flip the Okinawa trip around to show it from Aina and Kohei's side, since the preview already teased Kohei walking out of that love hotel looking absolutely wrecked.

What Season 4 Could Adapt from the Manga

The pacing so far suggests each season covers through roughly five or six volumes, so if that holds, Season 4 has plenty to chew on. Here is a rough idea of what could be on the table, based on where the manga currently stands.

1. The fallout from Okinawa, since Iori and Chisa cannot exactly go back to pretending nothing happened
2. Sakurako's storyline getting more screen time, especially her own feelings toward Iori finally being addressed
3. The usual scumbro antics, because a Grand Blue season without them would feel wrong
4. A bit more focus on side characters like Otoya, who has been quietly building a bigger role since he joined the club
5. Possibly the start of a shift where the seniors begin handing things off to the younger PaB members
6. Some heavier emotional beats mixed in, since the manga starts balancing comedy with real relationship stakes around this point.

And honestly, Kohei remains one of the most entertaining parts of any season. The guy summed up his entire college philosophy back in Season 1 with one line:

"If I don't get someone else drunk and make them join the club, I'll never get away" - Kohei Imamura

Nobody knows the exact cutoff point yet, but if the studio wants a clean stopping spot, wrapping somewhere before the big Sakurako development would make sense narratively. Check out the official trailer for Season 3 down below if you want a reminder of how this whole arc got started, it is honestly a good watch even after finishing the season.

When Could Season 4 Actually Release

Nobody has announced anything officially, so this is all speculation, but the gaps between seasons give a decent hint. Season 2 took years to show up after Season 1, which was rough for fans, but Season 3 came out much faster, only about a year after Season 2 wrapped. If that faster pace sticks, a 2027 release for Season 4 feels like a fair guess, maybe with an announcement dropping not too long after Season 3 ends.

A lot depends on how the studio wants to handle production though. Several viewers this season pointed out the animation felt a bit stiffer than usual, so there is a chance the studio takes extra time before Season 4 to fix that rather than rushing another season out.

How Fans Are Feeling About Season 4

The mood right now is mostly excitement mixed with a little anxiety. People want to see where Iori and Chisa go from here, especially after how natural they looked together on their trip, but there is also a real soft spot for Sakurako among longtime fans who want her arc treated with care instead of being rushed. Kohei somehow remains a fan favorite no matter what nonsense he gets dragged into, and that is unlikely to change.

If sequel speculation like this is your thing, we have also covered predictions for That Time I Got Reincarnated as a Slime Season 4 Cour 3 and Tomb Raider King Season 2, both worth a look if you enjoy digging into what is coming next.

For now, everyone is just counting down to that finale, and once it airs, expect the Season 4 talk to get a whole lot louder.