Yes, That Time I Got Reincarnated as a Slime Season 4 is officially confirmed and currently on the air. The project was first announced on September 27, 2024, immediately following the broadcast of Season 3’s finale, before Bandai Namco Filmworks expanded the project into a historic five-cour commitment spanning roughly 60 episodes. The rollout kicked off its first phase on April 3, 2026, with consecutive Cours 1 and 2, landing right alongside the franchise’s second feature film, Tears of the Azure Sea. This is not an ambiguous teaser or a standard 12-episode renewal; it is one of the largest single-order production commitments in modern late-night anime.
This multi-cour rollout is structurally bigger than any previous season, and casual viewers often miss the detail that reshapes the entire production. Original author Fuse officially concluded the main light novel series with Volume 23 on November 29, 2025, meaning Studio 8bit is now adapting toward a fully completed narrative roadmap for the first time in franchise history. That completely eliminates filler bloat, solves pacing ambiguities, and gives the studio full freedom to pace Rimuru’s geopolitical conflicts without fear of overtaking the source. Here is everything confirmed and what the massive release structure actually means.
That Time I Got Reincarnated as a Slime Season 4 Release Date: When Is It Airing?
That Time I Got Reincarnated as a Slime Season 4 officially premiered on April 3, 2026. The series broadcasts weekly in Japan on NTV’s “Friday Anime Night” programming block at 11:00 p.m. JST, streaming globally on Crunchyroll. The first two cours cover 24 continuous episodes running through late September 2026, followed by a planned production breather before Cours 3 through 5 roll out between late 2026 and 2027. Any rumor suggesting all 60 episodes would air in a single uninterrupted block is false; Studio 8bit specifically planned split broadcast windows to safeguard animation quality.
Which Studio Is Making That Time I Got Reincarnated as a Slime Season 4?
Studio 8bit is officially producing That Time I Got Reincarnated as a Slime Season 4. The studio has served as the creative backbone of the anime adaptation since its 2018 premiere, keeping key personnel intact, including director Atsushi Nakayama and series composition writer Toshizo Nemoto. With Bandai Namco Filmworks acquiring 8bit as a wholly owned subsidiary, the studio now benefits from dedicated corporate funding and permanent in-house staff allocation, shielding this multi-year production from the scheduling crunches that plague many seasonal sequels.
What Light Novel Arcs Does That Time I Got Reincarnated as a Slime Season 4 Cover?
Season 4 adapts from Light Novel Volume 10 onward, setting the stage for the massive Great War. Picking up directly from the aftermath of the Tempest Founder’s Festival, the opening cours tackle the Majin Behind the Scenes Arc, highlighting Rimuru’s struggle against the financial manipulation of the Rozzo Family and the Five Elders. The narrative then dives through Volumes 11 and 12 to resolve the mysteries surrounding Chronoa and the Western Holy Church, serving as the geopolitical springboard straight into the catastrophic Eastern Empire Arc.
Will the Original Cast Return for That Time I Got Reincarnated as a Slime Season 4?
The entire core voice cast returned for Season 4 across both Japanese and English broadcasts. Protagonist Rimuru Tempest is once again voiced by Miho Okasaki, alongside Megumi Toyoguchi as Raphael, Tomoaki Maeno as Veldora, Makoto Furukawa as Benimaru, and Takahiro Sakurai as Diablo. On the English simuldub side, Brittney Karbowski returns as Rimuru, with Chris Rager as Veldora and Tyson Rinehart as Ranga. Given the franchise’s sustained global success, the production committee preserved complete cast continuity across all recurring roles.
Why Is That Time I Got Reincarnated as a Slime Season 4 Running for Five Cours?
The five-cour greenlight stems from the immense depth of the remaining narrative and the completion of the novels. Previous seasons generally adapted three light novel volumes across two cours, but the upcoming story involves multi-front continental warfare, dense political summits, and labyrinthine schemes that simply cannot be condensed into 24 episodes without gutting vital character motivations. By locking down approximately 60 episodes across five split cours, the production committee gave the team the exact narrative space required to deliver a comprehensive adaptation without severe cuts.
Where to Watch That Time I Got Reincarnated as a Slime Season 4 and Previous Seasons
All episodes of Season 4 stream exclusively on Crunchyroll across North America, Europe, and Latin America. Crunchyroll remains the international home for the entire franchise catalog, offering all 72 episodes across Seasons 1 to 3, the 12-episode spin-off The Slime Diaries, and the five original OADs. Meanwhile, the second canon film, Tears of the Azure Sea, is transitioning from its Japanese theatrical run to international digital streaming, and Muse Asia retains licensing and streaming distribution for Southeast Asia.
How Much Source Material Has That Time I Got Reincarnated as a Slime Adapted So Far?
The television anime has covered nine light novel volumes, leaving 14 complete books to adapt. With Fuse publishing the definitive conclusion in Volume 23 on November 29, 2025, the source text is officially locked. Because Taiki Kawakami’s monthly manga adaptation in Kodansha’s Monthly Shonen Sirius moves at a measured rate, the anime has outpaced the manga chapters, pulling its storyboards, lore intricacies, and pacing outlines directly from the primary light novel canon to sustain the five-cour pipeline.
How Was That Time I Got Reincarnated as a Slime Season 4 Officially Announced?
The sequel was confirmed immediately following Season 3 before getting an unprecedented expansion. Bandai Namco Filmworks dropped the initial teaser key visual on September 27, 2024, simultaneously confirming Season 4 alongside a second movie as soon as Episode 72 finished airing. The true scale of the project became clear during a special franchise broadcast on December 19, 2025, where producers revealed the astonishing five-cour broadcast plan, officially securing the franchise’s television dominance through 2027.
What Makes That Time I Got Reincarnated as a Slime Season 4 Unique?
A confirmed five-cour production run is almost unheard of in the modern late-night anime landscape. While the broader anime industry has pivoted toward brief 12-episode productions to hedge financial bets, Tensura possesses the commercial leverage to claim over an entire year of national television broadcasting. With over 56 million copies in print circulation worldwide and multi-billion streaming figures, the property operates with the financial security of legacy shonen franchises, giving Studio 8bit rare multi-year production stability.
Why the That Time I Got Reincarnated as a Slime Season 4 Renewal Matters
This expanded commitment proves the production committee values narrative completeness over cheap seasonal traffic. Rather than condensing Fuse’s intricate socio-political systems and massive military campaigns into frantic highlight reels, the team committed to the exact episode real estate needed to adapt the story properly. That Time I Got Reincarnated as a Slime established itself as modern isekai’s preeminent nation-building epic, and Season 4’s massive 5-cour investment guarantees Rimuru’s overarching saga will receive the grand finale it earned.
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