Season 4
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
Tempest is thriving after the success of its festival, but unexpected trouble has arisen with the new dungeon.
Rimuru and his trusted companions discuss ideas for improving the dungeon.
Rimuru, Ramiris, Veldora, and Milim work on perfecting their avatars before facing Team Green Fury.
The Council of the West deliberates on whether to grant membership to Tempest.
Rimuru attends the meeting that will determine Tempest's membership in the Council of the West.
A list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion.
An interrogation of Prince Elric's would-be shooter reveals who's pulling the strings behind the Council.
Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.
The investigation of the ancient ruins of Amrita begins.
Rimuru and Mirabel come face-to-face at last in the ancient ruins.
Rimuru helps Milim confront the Chaos Dragon, a corrupted form of the baby dragon that was once her friend.
Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.
Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.
Diablo returns with new demon subordinates to add to Tempest's ranks.
As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.
Luminus meets with Rimuru to discuss Gran and future plans.
While Leon seeks Elmesia's help in finding Chloe, Granville's forces invade Lubelius.
An army of demons advances from the north, leaving the Western Nations in turmoil.
Granville's true plan is revealed, but it may already be too late to stop it.
When Chloe's Time Traveler skill kicks in, Hinata's soul is sent to the past along with her.
Chloe and Hinata meet Luminus and begin their journey as Chronoa.
Chronoa is freed from her seal—not as a Hero, but as an avatar of destruction.
Shion and Ranga continue to battle Razul while Rimuru struggles to save Chloe and Hinata.
Rimuru has Raphael interfere in Chronoa's Unlimited Imprisonment skill to save Hinata and Chloe.