The official website for the anime That Time I Got Reincarnated as a Slime has announced that Season 4 will premiere on April 3, 2026. This highly anticipated continuation marks a significant expansion for the franchise, with the season structured as an unprecedented five-split cours, meaning it will span multiple broadcasting periods over an extended timeframe. The first two cours will air consecutively starting in April, providing fans with a substantial block of new episodes right from the outset.
That Time I Got Reincarnated as a Slime, often abbreviated as Tensura, has built a massive following since its debut as a web novel on the Shōsetsuka ni Narō platform. The story follows the journey of an ordinary corporate worker who, after a tragic encounter with a random killer, finds himself reincarnated in a fantasy world—not as a heroic figure, but as a humble slime. Adopting the name Rimuru Tempest, he leverages unique abilities and an evolving set of skills to forge alliances, build a nation, and promote harmony among diverse races. The anime adaptation, produced by studio 8-Bit, has faithfully brought this tale to life across three previous seasons, with Season 3 concluding its run in 2024 after adapting key arcs from the light novels.
Season 4 picks up following the events of the Jura-Tempest Federation's growing influence. After establishing diplomatic ties through grand festivals and international outreach, Rimuru's domain advances toward the ambitious goal of a "human-monster coexistence sphere." Yet, this progress draws scrutiny and potential threats from those wary of Rimuru's rising power as a Demon Lord. The narrative promises deeper exploration of political intrigue, escalating conflicts, and Rimuru's continued efforts to create an inclusive society where barriers between species dissolve.
The announcement highlights the scale of this project, with the five-cour format allowing for a more comprehensive adaptation of the source material's later developments. Returning voice actor Miho Okasaki will reprise her role as Rimuru Tempest, ensuring continuity in the character's endearing and strategic personality. Studio 8-Bit remains at the helm for animation, maintaining the high-quality visuals and dynamic action sequences that have defined the series.
This news arrives amid other exciting franchise developments. A second original anime film, That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea, is slated for theatrical release in Japan on February 27, 2026, introducing new characters and a standalone adventure that complements the main storyline. The light novel series by Fuse, illustrated by Mitz Vah, has concluded its main run while spawning side stories, with additional content planned for 2026. The manga adaptation continues serialization, further expanding the world of Tempest.
As the premiere approaches, anticipation builds for how Rimuru's vision will face new challenges and alliances in this expansive season. The extended format underscores the creators' commitment to delivering a thorough and engaging continuation of one of the most beloved isekai series in recent years.
Crunchyroll's description of Tensura reads:
Corporate worker Mikami Satoru is stabbed by a random killer, and is reborn to an alternate world. But he turns out to be reborn a slime! Thrown into this new world with the name Rimuru, he begins his quest to create a world that’s welcoming to all races.
Sources: the official website of the anime That Time I Got Reincarnated as a Slime and official X account of the anime
