That Time I Got Reincarnated as a Slime Season 4

That Time I Got Reincarnated as a Slime Season 4

Episodes

7 Aired

New Days

EP 01

2026.04.03 (金)·24分

New Days

新しい日々

The Founders Festival has ended in great success, and the Jura Tempest Federation takes a new step toward realizing the Human-Monster Prosperity Zone. While Rimuru Tempest is inspecting the town, he encounters adventurers arguing with Benimaru and the security team over conquering the Underground Labyrinth. After receiving complaints about the dungeon's difficulty, Rimuru Tempest gathers Veldora Tempest and others for an operational meeting. As Rimuru Tempest frets over the low level of the challengers, Masayuki proposes a game-like solution.

The Evolving Labyrinth

EP 02

2026.04.10 (金)·24分

The Evolving Labyrinth

進化する迷宮

Thanks to Masayuki's idea of opening rest areas and the publicity from the high prize money, the dungeon overhaul is a huge success! While Rimuru is relieved that management is on track, a party named "Team Green Rebellion," consisting of 100 members, arrives to conquer the dungeon. Furthermore, Hinata's training in the dungeon has caused the Floor Guardians from the 60th floor onwards to become non-functional. In response to this emergency, Rimuru sets out to strengthen the dungeon.

EP 03

2026.04.17 (金)·24分

Formation of the Avatar Team

仮魔体チーム結成

Rimuru and his friends have obtained avatars for the underground dungeon. However, with low-level avatars and uncoordinated combat styles, they are no match for Team Green Fury. Consequently, Rimuru begins special training with his companions.

Invitation

EP 04

2026.04.24 (金)·24分

Invitation

招待状

Even after repelling Team Gekiran, Rimuru and the others continued their special training in the underground labyrinth. Meanwhile, at the Council of the West in the Kingdom of Ingrassia, a certain discussion regarding the Jura Tempest Federation was being held.

The First Step

EP 05

2026.05.08 (金)·24分

The First Step

最初の一歩

Rimuru and his companions arrive in the Kingdom of Ingrassia following a summons from the Council of the West. When the Jura Tempest Federation requests to join the Council, the councilors present conditions driven by greed.

Council of the West

EP 06

2026.05.15 (金)·24分

Council of the West

西方諸国評議会

Rimuru is infuriated by the unreasonable demands from the Council. Furthermore, Prince Elrick of the Kingdom of Ingrassia appears, seeking to subjugate Demon Lord Rimuru, throwing the council into a volatile situation.

The Mastermind's True Identity

EP 07

2026.05.22 (金)·24分

The Mastermind's True Identity

黒幕の正体

Having successfully prevented the assassination of Elrick amidst the chaos, the council concludes safely with the Jura Tempest Federation joining. Upon returning to the Jura Tempest Federation, Rimuru and the others begin interrogating Glenda, the perpetrator of the assassination attempt.