That Time I Got Reincarnated as a Slime Season 4 cover art

That Time I Got Reincarnated as a Slime Season 4

Tensei Shitara Slime Datta Ken 4th Season Part 1 & 2転生したらスライムだった件 第4期 第1&2クールTensura 4Aquella vez que me convertí en slime - Temporada 4

2026 · TV · 24 eps Finished

AniList average score
83%
On AniList users' lists
145,099

What is That Time I Got Reincarnated as a Slime Season 4 about?

That Time I Got Reincarnated as a Slime Season 4 is a TV anime series of 24 episodes animated by 8-bit, adapted from a light novel. It aired from April 3, 2026 to September 25, 2026. AniList classifies it as action, adventure, comedy and fantasy. It continues from That Time I Got Reincarnated as a Slime Season 3, which is worth watching first.

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!

Synopsis from AniList, which credits Crunchyroll News. The summary above it is written by FreeAnime.xyz from AniList's data.

Themes AniList users associate with it: Kingdom Management, Isekai, Ensemble Cast, Magic, Politics, Demons, Henshin, Male Protagonist, Swordplay, Medieval.

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Streaming rights differ by country and change over time. A listed title page means AniList records it for this entry; it does not confirm the title is available in your region today.

Other official links listed on AniList

Official trailer on YouTube

Main characters

Characters AniList lists in a main role, with spoiler-free notes.

  • Rimuru Tempest リムル・テンペスト

    Main character

    Rimuru Tempest, formerly known as Satoru Mikami, is the main protagonist of Tensei Shitara Slime Datta Ken. They are the founder and King of the monster country Tempest, situated in the Great Jura Forest, and the partner and sworn friend of Storm Dragon, Veldora Tempest.

    Japanese voice: Miho Okasaki

Supporting characters

  • Shion シオン

    Supporting character

    "War Lord" Shion is Rimuru’s first servant to be in charge of his care as his personal secretary. She is also the leader of the Yomigaeri and also one of Rimuru's strongest fighters and is coveted by many of the Demon Lords who have met her.

    Japanese voice: Mao Ichimichi

  • Veldora Tempest ヴェルドラ＝テンペスト

    Supporting character

    Veldora Tempest is the youngest of the four strongest dragons (True Dragons). He is connected with Rimuru by an agreement and was known to rampage here and there.

    Japanese voice: Tomoaki Maeno

  • Ranga ランガ

    Supporting character

    "Star Lord" Ranga is a Wind Spirit Wolf and a loyal follower of Rimuru. The leader of the Star Wolf Clan, and the son of the previous boss of the Direwolves. He is also one of Rimuru's Twelve Patrons who has been given the title of a "Lord".

    Japanese voice: Chikahiro Kobayashi

  • Milim Nava ミリム・ナーヴァ

    Supporting character

    "Destroyer" Milim Nava is one of the oldest and strongest Demon Lords. She is a Dragonoid. Her nickname, Destroyer, is not just for show. She is a demon lord one should never fight against.

    Japanese voice: Rina Hidaka

  • Benimaru ベニマル

    Supporting character

    Benimaru is one of the third group of subordinate Monsters to be named by Rimuru Tempest. Originally an Ogre, he was uncertain of his servitude and intended for it to be temporary, but after being named, he evolved into a Kijin, immediately becoming Rimuru's most powerful subordinate for a time, and decided to serve…

    Japanese voice: Makoto Furukawa

  • Souei ソウエイ

    Supporting character

    Souei is an Ogre that was among the third group of subordinates to be named by Rimuru Tempest. He is Rimuru's faithful shadow and the leader of the Shadow Squad of the Jura Tempest Federation.

    Japanese voice: Takuya Eguchi

  • Shuna シュナ

    Supporting character

    Shuna is one of the third group of subordinate Monsters to be named by Rimuru, evolving her from an Ogre to a Kijin. She was originally the princess of the Ogre tribe and even though she had the talent for using Magic, she was a sheltered girl, but quickly got along with the Goblinas Shuna is the daughter of the late…

    Japanese voice: Sayaka Senbongi

  • Daikenja 大賢者

    Supporting character

    Unique Skill Great Sage is one of the first two Unique Skills (the other being Predator) that Rimuru Tempest had upon being born into his new world.

    Japanese voice: Megumi Toyoguchi

  • Rigurd リグルド

    Supporting character

    Formerly the chief of the goblin village Rimuru comes across. He's now the acting prime minister of the Jura Tempest Federation. He evolved into a hobgoblin when Rimuru named him.

    Japanese voice: Kanehira Yamamoto

  • Rigur リグル

    Supporting character

    Rigur was named after his late elder brother. Rigur, after making Gobta the garrison squad leader, has been supporting his father Rigurd.

    Japanese voice: Haruki Ishiya

  • Gobta ゴブタ

    Supporting character

    Gobta is a hobgoblin and is one of Rimuru Tempest's followers. Though he seems to be air-headed he tends to be a hard-worker and dependable when the time calls for it.

    Japanese voice: Asuna Tomari

  • Kaijin カイジン

    Supporting character

    Kaijin was a blacksmith of the Dwarven Kingdom, and the brother of Kaidou. After he was exiled from his own country, he became Rimuru Tempest's subordinate, and helped build the Monster City "Tempest", he acted as a builder, blacksmith, and craftsmen. He also was the former commander of the Dwargon Engineering Corps.

    Japanese voice: Atsushi Ono

Full cast list

Related works

Prequels, sequels, side stories and source material, as linked on AniList.

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