That Time I Got Reincarnated as a Slime

Season 4

2026 · 24 episodes · 9h 36m in all · 8.3/10

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!

Episodes

1. 

   1. New Days

   3 Apr 2026 · 24 min · 8.9/10

   Tempest is thriving after the success of its festival, but unexpected trouble has arisen with the new dungeon.

2. 

   2. The Dungeon Evolves

   10 Apr 2026 · 24 min · 8.8/10

   Rimuru and his trusted companions discuss ideas for improving the dungeon.

3. 

   3. The Avatar Team Is Formed

   17 Apr 2026 · 24 min · 7.9/10

   Rimuru, Ramiris, Veldora, and Milim work on perfecting their avatars before facing Team Green Fury.

4. 

   4. Invitation

   24 Apr 2026 · 24 min · 8.0/10

   The Council of the West deliberates on whether to grant membership to Tempest.

5. 

   5. The First Step

   8 May 2026 · 24 min · 8.0/10

   Rimuru attends the meeting that will determine Tempest's membership in the Council of the West.

6. 

   6. The Council of the West

   15 May 2026 · 24 min · 8.3/10

   A list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion.

7. 

   7. The Mastermind's Identity

   22 May 2026 · 24 min · 8.2/10

   An interrogation of Prince Elric's would-be shooter reveals who's pulling the strings behind the Council.

8. 

   8. The Groundwork of Greed

   29 May 2026 · 24 min · 7.6/10

   Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.

9. 

   9. Investigating the Ruins

   5 Jun 2026 · 24 min · 8.4/10

   The investigation of the ancient ruins of Amrita begins.

10. 

    10. The Master of Greed

    12 Jun 2026 · 24 min · 8.2/10

    Rimuru and Mirabel come face-to-face at last in the ancient ruins.

11. 

    11. Milim's Friend

    19 Jun 2026 · 24 min · 9.2/10

    Rimuru helps Milim confront the Chaos Dragon, a corrupted form of the baby dragon that was once her friend.

12. 

    12. Tempest Evolves

    26 Jun 2026 · 24 min · 7.2/10

    Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.

13. 

    13. New Companions

    3 Jul 2026 · 24 min · 7.0/10

    Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.

14. 

    14. The Black Numbers

    10 Jul 2026 · 24 min · 7.5/10

    Diablo returns with new demon subordinates to add to Tempest's ranks.

15. 

    15. An Unsettling Feeling

    17 Jul 2026 · 24 min · 7.0/10

    As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.

16. 

    16. Gran, the Hero of Dawn

    24 Jul 2026 · 24 min · 8.0/10

    Luminus meets with Rimuru to discuss Gran and future plans.

17. 

    17. Lubelius, the Point of Convergence

    7 Aug 2026 · 24 min · 8.0/10

    While Leon seeks Elmesia's help in finding Chloe, Granville's forces invade Lubelius.

18. 

    18. Turbulence in the West

    14 Aug 2026 · 24 min · 8.0/10

    An army of demons advances from the north, leaving the Western Nations in turmoil.

19. 

    19. Death and Loss

    21 Aug 2026 · 24 min · 9.0/10

    Granville's true plan is revealed, but it may already be too late to stop it.

20. 

    20. Chronoa the Hero (1)

    28 Aug 2026 · 24 min · 9.8/10

    When Chloe's Time Traveler skill kicks in, Hinata's soul is sent to the past along with her.

21. 

    21. Chronoa the Hero (2)

    4 Sept 2026 · 24 min · 9.2/10

    Chloe and Hinata meet Luminus and begin their journey as Chronoa.

22. 

    22. Where the Soul Resides

    11 Sept 2026 · 24 min · 9.0/10

    Chronoa is freed from her seal—not as a Hero, but as an avatar of destruction.

23. 

    23. Granville's Hope

    18 Sept 2026 · 24 min · 8.2/10

    Shion and Ranga continue to battle Razul while Rimuru struggles to save Chloe and Hinata.

24. 

    24. The Hero Awakens

    25 Sept 2026 · 24 min · 9.3/10

    Rimuru has Raphael interfere in Chronoa's Unlimited Imprisonment skill to save Hinata and Chloe.