We fans already know how wild Rimuru’s journey has been. From a simple slime to a nation leader, every season gave something bigger than the last. The world-building, the fights, and the politics—everything kept growing with Rimuru’s power. That’s why, after Season 3 ended, we all had one big question in our heads.
Is Reincarnated as a Slime Season 4 happening? And if yes, when? Now that the official update is out, let’s break down every single detail from confirmation to expected plot and more.
That Time I Got Reincarnated as a Slime Season 4 Release Date
That Time I Got Reincarnated as a Slime Season 4 will officially premiere on April 3, 2026, in Japan. The announcement confirmed that the season will begin broadcasting in the late-night Friday slot on Nippon TV, with additional broadcasts on BS11.
The movie Tears of the Azure Sea is scheduled for February 27, 2026, and Season 4 will follow shortly after in April. So instead of a long multi-year wait, fans are getting the movie first and then the new season almost immediately. On September 27, 2024, the same day Season 3 ended, a special PV and new visual were released. In the video, Rimuru appeared inside Tempest Manor, holding a meeting. And then, the voice of Great Sage directly revealed that both Season 4 and a second movie were now in production.
The announcement was made through the anime’s official website and X (formerly Twitter). Studio 8bit also confirmed that they would continue the animation work for the new season.
Season 4 is planned as a split project. The first two continuous cours will begin from April 2026, with the remaining cours scheduled for a later time that has not yet been announced. This confirms that the production scale is larger than previous seasons and not limited to a standard single 24-episode run.
What Will Happen in Season 4? Expected Plot and Arcs
The next season will be full of political games, powerful enemies, and some major setup for future battles.
Majin Behind the Scenes:
Rimuru’s new nation Tempest, is finally getting noticed. His projects like the dungeon have made Tempest famous. Now, Rimuru wants to formally strengthen ties with the Western Nations. But not everyone is happy with that. In the official Season 4 synopsis, Granbell Rosso and Mariabell Rosso are confirmed to be moving from the shadows, working behind the scenes through the Kingdom of Rosso and Eldorado. Their political manipulation becomes a central conflict even before open war begins.
A New Demon Lord Appears:
The preview showed Rimuru in a serious council scene with his top people. The official synopsis also confirms activity from Demon Lord Leon Cromwell in Eldorado. Which connects directly to the larger political tension building across nations. Instead of a random new Demon Lord appearing, Season 4 focuses on already established high-level figures stepping into the spotlight.
Set up for the Empire War Arc:
The light novel structure makes it clear that the Rosso conflict and Western power struggle serve as groundwork for the larger Empire storyline. Season 4 is expected to escalate diplomatic tension and military positioning that later leads to the Eastern Empire conflict. It may not fully adapt to the Empire War yet, but the foundation will begin here.
Episode Count & Flow:
That Time I Got Reincarnated as a Slime Season 4 has been announced as a split 5-cour project, with the first two cours starting in April 2026 and the remaining cours scheduled later. This means the story pacing will be broader than a single standard season and not limited to just three short arcs.
What Light Novel Volumes Will Season 4 Cover?
Season 4 is expected to adapt Volume 10 and Volume 11 of the light novel. That will focus heavily on the Rosso family conflict, Mariabell’s schemes, and the Western political manoeuvring. These volumes directly lead into the larger Empire storyline.
Reincarnated as a Slime Season 3 covered Volumes 7 to 9, so naturally, 10 and 11 are next. Volume 12 marks the beginning of the Empire War Arc. If pacing follows the expanded cour format, the adaptation may start transitioning into early Volume 12 material toward the later cours, but the core focus remains on the Rosso and Western Council conflict.
Production and Studio Info: Who Is Making Season 4?
Studio 8bit is once again in charge of animation for Reincarnated as a Slime Season 4. They have handled the anime since the very beginning in 2018. In 2024, the studio officially became part of Bandai Namco Filmworks, which has now become the main production lead.
The team behind Season 3 is also coming back:
- Director: Atsushi Nakayama
- Series Composition: Toshizo Nemoto
- Character Design: Ryōma Ebata
- Music: Elements Garden
As of now, the full detailed staff list for Season 4 has not been completely re-announced. However, based on the official production reveal and continuity from Season 3, the core creative structure remains under Studio 8bit.
READ MORE: Who is Rimuru Tempest’s Wife?
Where You Can Watch That Time I Got Reincarnated as a Slime Season 4 When It Releases
When the season drops, you can watch it on Crunchyroll. It will be available in major countries like:
| Country/Region | Streaming Platform |
|---|---|
| USA | Crunchyroll |
| UK | Crunchyroll UK |
| Canada | Crunchyroll / Hulu |
| Australia | Crunchyroll ANZ |
| Most of Europe | Crunchyroll Europe |
Crunchyroll has handled all previous seasons and will likely simulcast Reincarnated as a Slime Season 4, too. In some countries like Canada, you might also get the show through local tie-ups with services like Hulu. But for fast and regular episodes, Crunchyroll is your best bet.
In the End
That Time I Got Reincarnated as a Slime has become a fan favorite because it gives something for everyone. A calm protagonist, strong world-building, power scaling, politics, and emotional moments. Every season added more value, and now the world of Tempest feels like home to many of us.
Now that Season 4 is confirmed and production is moving ahead, it is just a matter of time. Let us know in the comments—what do you want to see the most in Season 4? Are you excited for the political twists or waiting for the war to begin?