That Time I Got Reincarnated as a Slime Season 4

Season 4 of That Time I Got Reincarnated as a Slime continues the story of Rimuru Tempest, a former human reincarnated in another world as a slime. Now a Demon Lord and the leader of the monster nation Tempest, Rimuru works to strengthen ties between humans and monsters while managing the growing influence of his realm.

The season brings Granville Rozzo and his granddaughter Maribel Rozzo into conflict with Rimuru. Their vision for safeguarding humanity clashes with his approach, as they favor protection through control while he seeks coexistence and mutual benefit. This disagreement drives a political and ideological struggle that tests Tempest's diplomacy and the stability of its alliances.

At the same time, Demon Lord Leon pursues his own plans in El Dorado, and the emergence of a new Hero adds another major factor to the shifting balance of power. As these separate ambitions begin to intersect, Rimuru must navigate rising tensions and uncertain loyalties without losing sight of his goal.

This season adapts material from the light novel series written by Fuse and illustrated by Mitz Vah, and the anime production is handled by the studio Eight Bit. Season 4 continues the television adaptation of that source material rather than adapting an original story, with the record listing the light novel as its source and the format as a TV series.

The season was announced after the final episode of the third season aired, and the same announcement also confirmed a second film for the franchise. The fourth season premiered on April 3, 2026 in the spring season, and the production plan described it as spanning five cours, with the first two cours arriving in 2026 and the remaining three cours still without announced dates. The saved record lists 24 episodes for the current run, each about 24 minutes long, and the release status remains ongoing.

For viewers outside Japan, the season is available through simulcast streaming on Crunchyroll as well as iQ, YouTube, Bilibili TV, and Netflix, and an English dub is offered alongside the original Japanese audio.

This entry is the fourth television season of the anime adaptation of That Time I Got Reincarnated as a Slime, which is based on the light novel series written by Fuse and illustrated by Mitz Vah. Produced by Eight Bit, it continues the storyline established in the prior three seasons. It is a direct continuation, not a reboot or alternate version, and it follows the main anime continuity.

Within the larger franchise, which encompasses the original light novels, a main manga adaptation, several spin-off manga, theatrical films, and original animation DVDs, this season represents a mainline installment. It adapts further arcs from the source material. A second film was announced alongside this season, indicating the franchise's ongoing expansion across multiple media. This page focuses solely on Season 4, not the franchise as a whole.

As a sequel to Season 3, it is neither a beginning nor a spin-off. It assumes viewer familiarity with prior events. The season is scheduled for 24 episodes, with a planned premiere in 2026. It stands as a key part of the anime's chronological progression.