That Time I Got Reincarnated as a Slime
Season 4
Overview
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. New Days
Tempest is thriving after the success of its festival, but unexpected trouble has arisen with the new dungeon.
2. The Dungeon Evolves
Rimuru and his trusted companions discuss ideas for improving the dungeon.
3. The Avatar Team Is Formed
Rimuru, Ramiris, Veldora, and Milim work on perfecting their avatars before facing Team Green Fury.
4. Invitation
The Council of the West deliberates on whether to grant membership to Tempest.
5. The First Step
Rimuru attends the meeting that will determine Tempest's membership in the Council of the West.
6. The Council of the West
A list of unreasonable demands from the Council makes Rimuru realize that a deeper plot is in motion.
7. The Mastermind's Identity
An interrogation of Prince Elric's would-be shooter reveals who's pulling the strings behind the Council.
8. The Groundwork of Greed
Glenda reveals all she knows about the Council and the Rozzos, and Rimuru prepares to inspect ancient ruins.
9. Investigating the Ruins
The investigation of the ancient ruins of Amrita begins.
10. The Master of Greed
Rimuru and Mirabel come face-to-face at last in the ancient ruins.
11. Milim's Friend
Rimuru helps Milim confront the Chaos Dragon, a corrupted form of the baby dragon that was once her friend.
12. Tempest Evolves
Rimuru shares his plans for Tempest's future, including a new system of government and Council representation.
13. New Companions
Ramiris and Veldora are feeling overworked, so they ask Rimuru to find assistants for them.
14. The Black Numbers
Diablo returns with new demon subordinates to add to Tempest's ranks.
15. An Unsettling Feeling
As Tempest continues to grow and evolve, the Moderate Harlequin Alliance approaches Demon Lord Leon.
