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!
All episodes — Season 4
S4 E1New Days
Apr 3, 20269.124 min
Tempest is thriving after the success of its festival, but unexpected trouble has arisen with the new dungeon.
S4 E2The Dungeon Evolves
Apr 10, 20268.824 min
Rimuru and his trusted companions discuss ideas for improving the dungeon.
S4 E3The Avatar Team Is Formed
Apr 17, 20267.924 min
Rimuru, Ramiris, Veldora, and Milim work on perfecting their avatars before facing Team Green Fury.
S4 E4Invitation
Apr 24, 202624 min
The Council of the West deliberates on whether to grant membership to Tempest.
S4 E5The First Step
May 8, 202624 min
Rimuru attends the meeting that will determine Tempest's membership in the Council of the West.
S4 E6The Council of the West
May 15, 202624 min
A list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion.
S4 E7The Mastermind's Identity
May 22, 202624 min
An interrogation of Prince Elric's would-be shooter reveals who's pulling the strings behind the Council.
S4 E8The Groundwork of Greed
May 29, 20267.624 min
Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.
S4 E9Investigating the Ruins
Jun 5, 20268.424 min
The investigation of the ancient ruins of Amrita begins.
S4 E10The Master of Greed
Jun 12, 202624 min
Rimuru and Mirabel come face-to-face at last in the ancient ruins.
S4 E11Milim's Friend
Jun 19, 20269.224 min
Rimuru helps Milim confront the Chaos Dragon, a corrupted form of the baby dragon that was once her friend.
S4 E12Tempest Evolves
Jun 26, 20267.224 min
Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.
S4 E13New Companions
Jul 3, 20266.524 min
Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.
S4 E14The Black Numbers
Jul 10, 202624 min
Diablo returns with new demon subordinates to add to Tempest's ranks.
S4 E15An Unsettling Feeling
Jul 17, 202624 min
As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.
S4 E16Gran, the Hero of Dawn
Jul 24, 202624 min
Luminus meets with Rimuru to discuss Gran and future plans.
S4 E17Lubelius, the Point of Convergence
Aug 7, 202624 min
While Leon seeks Elmesia's help in finding Chloe, Granville's forces invade Lubelius.
S4 E18Turbulence in the West
Aug 14, 202624 min
An army of demons advances from the north, leaving the Western Nations in turmoil.
S4 E19Death and Loss
Aug 21, 202624 min
Granville's true plan is revealed, but it may already be too late to stop it.
- 20S4 E20In 3 days
Chronoa the Hero (1)
Aug 28, 202624 min
- 21S4 E21Upcoming
Episode 21
Sep 4, 2026
- 22S4 E22Upcoming
Episode 22
Sep 11, 2026
- 23S4 E23Upcoming
Episode 23
Sep 18, 2026
- 24S4 E24Upcoming
Episode 24
Sep 25, 2026