That Time I Got Reincarnated as a Slime: Season 4
2026 · 24 episodes · ★ 8.3
What Season 4 of That Time I Got Reincarnated as a Slime
Rimuru, now a Demon Lord, sees how much Tempest has grown and devotes his efforts to a new dungeon. His dream of an alliance between humans and monsters is getting closer, but Granville Rozzo and his granddaughter Maribel clash with him, because they want to protect humanity by ruling over it. Meanwhile, Leon pursues his own goals in El Dorado. Rimuru and his companions debate how to improve the dungeon, create the Avatar team and receive an invitation from the Western Council, which makes demands of him. The ruins of Amrita open an investigation that leads the slime to Maribel.
Season 4 Episodes
4x01 New Days
Tempest is thriving after the success of its festival, but unexpected trouble has arisen with the new dungeon.
Starring: Inori Minase
4x02 The Dungeon Evolves
Rimuru and his trusted companions discuss ideas for improving the dungeon.
4x03 The Avatar Team Is Formed
Rimuru, Ramiris, Veldora, and Milim work on perfecting their avatars before facing Team Green Fury.
Starring: Inori Minase
4x04 Invitation
The Council of the West deliberates on whether to grant membership to Tempest.
4x05 The First Step
Rimuru attends the meeting that will determine Tempest's membership in the Council of the West.
4x06 The Council of the West
A list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion.
4x07 The Mastermind's Identity
An interrogation of Prince Elric's would-be shooter reveals who's pulling the strings behind the Council.
4x08 The Groundwork of Greed
Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.
4x09 Investigating the Ruins
The investigation of the ancient ruins of Amrita begins.
4x10 The Master of Greed
Rimuru and Mirabel come face-to-face at last in the ancient ruins.
Starring: Inori Minase
4x11 Milim's Friend
Rimuru helps Milim confront the Chaos Dragon, a corrupted form of the baby dragon that was once her friend.
4x12 Tempest Evolves
Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.
4x13 New Companions
Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.
4x14 The Black Numbers
Diablo returns with new demon subordinates to add to Tempest's ranks.
4x15 An Unsettling Feeling
As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.
4x16 Gran, the Hero of Dawn
Luminus meets with Rimuru to discuss Gran and future plans.
4x17 Lubelius, the Point of Convergence
While Leon seeks Elmesia's help in finding Chloe, Granville's forces invade Lubelius.
4x18 Turbulence in the West
An army of demons advances from the north, leaving the Western Nations in turmoil.
4x19 Death and Loss
Granville's true plan is revealed, but it may already be too late to stop it.
4x20 Chronoa the Hero (1)
When Chloe's Time Traveler skill kicks in, Hinata's soul is sent to the past along with her.
4x21 Chronoa the Hero (2)
Chloe and Hinata meet Luminus and begin their journey as Chronoa.
4x22 Where the Soul Resides
Chronoa is freed from her seal—not as a Hero, but as an avatar of destruction.
4x23 Granville's Hope
Shion and Ranga continue to battle Razul while Rimuru struggles to save Chloe and Hinata.
4x24 The Hero Awakens
Rimuru has Raphael interfere in Chronoa's Unlimited Imprisonment skill to save Hinata and Chloe.
Season 4 Cast
Miho OkasakiRimuru (voice)24 episodes
Tomoaki MaenoVeldora (voice)24 episodes
Hochu OtsukaHakurou (voice)24 episodes
Asuna TomariGobta (voice)24 episodes
Chikahiro KobayashiRanga (voice)24 episodes
Jun FukushimaGabiru (voice)24 episodes
Rie TanakaTrainie (voice)24 episodes
Anzu HarunoRimiris (voice)24 episodes
All Seasons
Season 12018 · 24 ep. · 
Season 22021 · 24 ep. · 
Season 32024 · 24 ep. · Where to Watch Season 4 of That Time I Got Reincarnated as a Slime
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Frequently Asked Questions
How many episodes does Season 4 of That Time I Got Reincarnated as a Slime have?
Season 4 of That Time I Got Reincarnated as a Slime has 24 episodes.
When did Season 4 of That Time I Got Reincarnated as a Slime premiere?
It premiered on April 3, 2026.
Where to watch Season 4 of That Time I Got Reincarnated as a Slime?
Available with a subscription on Crunchyroll and Crunchyroll Amazon Channel (availability may vary by country).