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That Time I Got Reincarnated as a Slime
2018 24 min Adventure · Fantasy · Comedy 転生したらスライムだった件
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That Time I Got Reincarnated as a Slime 4 of 4

Season 4

24 episodes 2026 8 h 48 min 1080p
That Time I Got Reincarnated as a Slime — Season 4

About this season

Demon Lord Rimuru's dream of creating an alliance between humans and monsters takes a step closer to being realized. As Tempest continues to prosper, Granville Rozzo and his granddaughter, Maribel Rozzo, clash with Demon Lord Rimuru over their plan to protect mankind by ruling over them. Meanwhile, in El Dorado, Demon Lord Leon works toward goals of his own. The awakening of a new Hero draws near!

Season premiere
April 3, 2026
Episodes in the season
24
Whole season
8 h 48 min
Next episode
September 25, 2026
April 3, 2026 23 of 24 released September 25, 2026

Episodes

24 episodes · 8 h 48 min

  1. 3 Apr 2026 That Time I Got Reincarnated as a Slime, season 4, episode 1 — a still from the episode E01

    New Days

    24 min

    Tempest is thriving after the success of its festival, but unexpected trouble has arisen with the new dungeon.
  2. 10 Apr 2026 That Time I Got Reincarnated as a Slime, season 4, episode 2 — a still from the episode E02

    The Dungeon Evolves

    24 min

    Rimuru and his trusted companions discuss ideas for improving the dungeon.
  3. 17 Apr 2026 That Time I Got Reincarnated as a Slime, season 4, episode 3 — a still from the episode E03

    The Avatar Team Is Formed

    24 min

    Rimuru, Ramiris, Veldora, and Milim work on perfecting their avatars before facing Team Green Fury.
  4. 24 Apr 2026 That Time I Got Reincarnated as a Slime, season 4, episode 4 — a still from the episode E04

    Invitation

    24 min

    The Council of the West deliberates on whether to grant membership to Tempest.
  5. 8 May 2026 That Time I Got Reincarnated as a Slime, season 4, episode 5 — a still from the episode E05

    The First Step

    24 min

    Rimuru attends the meeting that will determine Tempest's membership in the Council of the West.
  6. 15 May 2026 That Time I Got Reincarnated as a Slime, season 4, episode 6 — a still from the episode E06

    The Council of the West

    24 min

    A list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion.
  7. 22 May 2026 That Time I Got Reincarnated as a Slime, season 4, episode 7 — a still from the episode E07

    The Mastermind's Identity

    24 min

    An interrogation of Prince Elric's would-be shooter reveals who's pulling the strings behind the Council.
  8. 29 May 2026 That Time I Got Reincarnated as a Slime, season 4, episode 8 — a still from the episode E08

    The Groundwork of Greed

    24 min

    Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.
  9. 5 Jun 2026 That Time I Got Reincarnated as a Slime, season 4, episode 9 — a still from the episode E09

    Investigating the Ruins

    24 min

    The investigation of the ancient ruins of Amrita begins.
  10. 12 Jun 2026 That Time I Got Reincarnated as a Slime, season 4, episode 10 — a still from the episode E10

    The Master of Greed

    24 min

    Rimuru and Mirabel come face-to-face at last in the ancient ruins.
  11. 19 Jun 2026 That Time I Got Reincarnated as a Slime, season 4, episode 11 — a still from the episode E11

    Milim's Friend

    24 min

    Rimuru helps Milim confront the Chaos Dragon, a corrupted form of the baby dragon that was once her friend.
  12. 26 Jun 2026 That Time I Got Reincarnated as a Slime, season 4, episode 12 — a still from the episode E12

    Tempest Evolves

    24 min

    Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.
  13. 3 Jul 2026 That Time I Got Reincarnated as a Slime, season 4, episode 13 — a still from the episode E13

    New Companions

    24 min

    Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.
  14. 10 Jul 2026 That Time I Got Reincarnated as a Slime, season 4, episode 14 — a still from the episode E14

    The Black Numbers

    24 min

    Diablo returns with new demon subordinates to add to Tempest's ranks.
  15. 17 Jul 2026 That Time I Got Reincarnated as a Slime, season 4, episode 15 — a still from the episode E15

    An Unsettling Feeling

    24 min

    As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.
  16. 24 Jul 2026 That Time I Got Reincarnated as a Slime, season 4, episode 16 — a still from the episode E16

    Gran, the Hero of Dawn

    24 min

    Luminus meets with Rimuru to discuss Gran and future plans.
  17. 7 Aug 2026 That Time I Got Reincarnated as a Slime, season 4, episode 17 — a still from the episode E17

    Lubelius, the Point of Convergence

    24 min

    While Leon seeks Elmesia's help in finding Chloe, Granville's forces invade Lubelius.
  18. 14 Aug 2026 That Time I Got Reincarnated as a Slime, season 4, episode 18 — a still from the episode E18

    Turbulence in the West

    24 min

    An army of demons advances from the north, leaving the Western Nations in turmoil.
  19. 21 Aug 2026 That Time I Got Reincarnated as a Slime, season 4, episode 19 — a still from the episode E19

    Death and Loss

    24 min

    Granville's true plan is revealed, but it may already be too late to stop it.
  20. 28 Aug 2026 That Time I Got Reincarnated as a Slime, season 4, episode 20 — a still from the episode E20

    Chronoa the Hero (1)

    24 min

    When Chloe's Time Traveler skill kicks in, Hinata's soul is sent to the past along with her.
  21. 4 Sep 2026 That Time I Got Reincarnated as a Slime, season 4, episode 21 — a still from the episode E21

    Chronoa the Hero (2)

    24 min

    Chloe and Hinata meet Luminus and begin their journey as Chronoa.
  22. 11 Sep 2026 That Time I Got Reincarnated as a Slime, season 4, episode 22 — a still from the episode E22

    Where the Soul Resides

    24 min

    Chronoa is freed from her seal—not as a Hero, but as an avatar of destruction.
  23. 18 Sep 2026 E23

    Episode 23
  24. 25 Sep 2026 Coming soon E24

    Episode 24