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Last updated: 1 November 2026

Quick Answer

That Time I Got Reincarnated as a Slime is a fantasy isekai anime by Eight Bit, adapted from Fuse's light novels through Taiki Kawakami's manga version. It follows Rimuru Tempest, a reborn slime who builds a nation of monsters. Four seasons (96 episodes to September 2026) and two films have aired, and Season 4 continues with its third cour in July 2027.

About That Time I Got Reincarnated as a Slime

Office worker Satoru Mikami dies and wakes in a fantasy world as a small blue slime with the power to absorb and copy almost anything. Naming himself Rimuru, he befriends a sealed dragon, rescues goblins and slowly builds a town where monsters and humans can live together. That Time I Got Reincarnated as a Slime is a cosy, clever nation-building isekai with plenty of action when diplomacy fails. What makes it special is how Rimuru solves problems: he would rather trade, negotiate and throw a festival than fight, so his tiny monster village grows step by step into the Jura Tempest Federation, a real nation with roads, baths, schools and allies. The politics, economics and everyday life of that growing country sit beside big battles against demon lords, holy knights and human kingdoms that fear what Tempest represents. Animated by Eight Bit, the series has run since 2018 across four seasons and two films, and its light novel source finished in 2025, so the whole journey is now mapped out.

That Time I Got Reincarnated as a Slime is a TV anime from 2018, first released in Fall 2018. It belongs to the Fantasy and Comedy and Action genres and is listed as a completed series. The summary above is written by the AnimeYug team in our own words.

Official Trailer

Story & Plot

Satoru Mikami, a 37-year-old office worker in Tokyo, is stabbed while shielding a colleague and dies hearing a strange voice grant him skills for his next life. He wakes as a blind, limbless slime in a cave, armed with the Predator skill, which lets him absorb creatures and copy their powers. There he meets Veldora, a mighty Storm Dragon sealed away for 300 years. The two become friends, take the name Tempest, and Rimuru swallows the dragon whole to work on breaking his seal from the inside.

Outside the cave, Rimuru rescues a goblin village, then dwarves, ogres and lizardmen, slowly founding a monster town in the Great Forest of Jura. Every new ally makes Tempest stronger, and more visible. Human kingdoms, merchant guilds, the Holy Empire and the Demon Lords all have to decide whether this cheerful slime is a partner or a threat, and Rimuru keeps answering with trade, festivals and friendship first, and overwhelming force only when his people are attacked.

Story Arcs & Episode Guide

The That Time I Got Reincarnated as a Slime anime is split into story sagas. Here is every saga in order, with its episodes and years.

ArcEpisodesYearsAbout
Season 1: The Founding of Tempest1–242018–2019Rimuru meets Veldora, saves goblins and dwarves, defeats the Orc Lord and faces the sky monster Charybdis
Season 2, Part 1: Falmuth's Invasion25–362021A human kingdom attacks Tempest while Rimuru is away, forcing him into a terrible choice
Season 2, Part 2: Walpurgis37–482021Rimuru becomes a Demon Lord and faces Clayman at the Walpurgis banquet of Demon Lords
Season 3: Saints, Schemes and the Founding Festival49–722024Hinata and the Holy Empire test Tempest, then Rimuru opens his nation to the world with a grand festival
Season 4, Cours 1–2: The Dungeon and the Western Council73–962026Tempest's labyrinth draws adventurers while the Rozzo family's plot targets Rimuru in the western nations

Why Watch That Time I Got Reincarnated as a Slime

  • Nation-building done right: a slime founds a country, and trade and festivals matter as much as battles.
  • A huge, lovable monster cast: goblins, ogres, dragons and demons all get names, jobs and growth.
  • Rimuru wins with kindness first, which makes the moments he truly fights back hit much harder.
  • Four seasons, two films and a finished light novel series mean a complete, mapped-out story.
  • Light, funny everyday episodes balance the big wars and Demon Lord politics.

Who Is It For?

That Time I Got Reincarnated as a Slime is rated TV-PG in the US, so it suits families with older children, teens and adults. Expect fantasy battles with some blood, a few darker war episodes in Season 2, and mild fan service, but the overall tone stays warm, funny and hopeful.

Main Characters

View all characters →

Voice Actors

The Japanese voices behind the main characters of That Time I Got Reincarnated as a Slime.

  • Rimuru TempestRuler of Tempest and the story's hero
    Japanese voiceMiho Okasaki
  • Veldora TempestStorm Dragon sealed in a cave for 300 years
    Japanese voiceTomoaki Maeno
  • Shizue IzawaJapanese summon known as the Conqueror of Flames
    Japanese voiceYumiri Hanamori
  • Milim NavaChaotic Demon Lord who befriends Rimuru
    Japanese voiceRina Hidaka
  • BenimaruOgre prince who becomes Tempest's military commander
    Japanese voiceMakoto Furukawa
  • ShunaOgre princess in charge of Tempest's weaving and cooking
    Japanese voiceSayaka Senbongi
  • ShionRimuru's devoted ogre secretary and bodyguard
    Japanese voiceM.A.O
  • SoueiOgre spy master who leads Tempest's shadow corps
    Japanese voiceTakuya Eguchi
  • HakurouElderly ogre swordsman and sword instructor
    Japanese voiceHōchū Ōtsuka
  • RangaTempest Wolf who becomes Rimuru's loyal mount
    Japanese voiceChikahiro Kobayashi
  • DiabloPrimordial demon who serves Rimuru with fanatical loyalty
    Japanese voiceTakahiro Sakurai
  • Hinata SakaguchiCaptain of the Holy Knights and a powerful otherworlder
    Japanese voiceManami Numakura
  • GeldOrc king who leads Tempest's builders and engineers
    Japanese voiceKenji Nomura
  • GabiruProud lizardman warrior and researcher
    Japanese voiceJun Fukushima
  • RamirisTiny fairy queen who runs the Dungeon of Tempest
    Japanese voiceAnzu Haruno
  • Guy CrimsonThe oldest Demon Lord, the Primordial Red
    Japanese voiceAkira Ishida

Staff & Production

Original Creator
Fuse
Animation Studio
Eight Bit
Series Director
Yasuhito Kikuchi (Seasons 1–2); Atsushi Nakayama (Season 3); Naokatsu Tsuda (Season 4)
Series Composition
Kazuyuki Fudeyasu (Seasons 1–3); Hitomi Ogawa (Season 4)
Music
Elements Garden (Seasons 1–3); R.O.N (Season 4)

Manga & Source Material

The series began as a web novel by Fuse, then became a light novel series with art by Mitz Vah. The anime follows Taiki Kawakami's manga adaptation of the novels, which is why the anime's credits name the manga as its base.

  • Written by Fuse; first serialised as a web novel on Shōsetsuka ni Narō from 2013 to 2016
  • Light novels published by Micro Magazine (GC Novels) with illustrations by Mitz Vah
  • The light novel series ended with volume 23 on 29 November 2025, completing the main story
  • Taiki Kawakami's manga adaptation runs in Monthly Shōnen Sirius and had 33 volumes by 2026
  • The franchise passed 40 million copies in circulation in 2023, across novels and manga
  • Kawakami's manga won the shōnen category of the 46th Kodansha Manga Award in 2022

Music

Each season refreshes its themes while keeping favourite artists in rotation: Takuma Terashima, TRUE and Azusa Tadokoro all return across seasons, and Season 4 hands its second cour themes to Daoko and Tadokoro.

Opening Themes

  • “Nameless Story”by Takuma TerashimaSeason 1, first opening (2018)
  • “Meguru Mono”by Takuma TerashimaSeason 1, second opening (2019)
  • “Storyteller”by TRUESeason 2, Part 1 (2021)
  • “Like Flames”by MindaRynSeason 2, Part 2 (2021)
  • “PEACEKEEPER”by STEREO DIVE FOUNDATIONSeason 3 (2024)
  • “Esoragoto”by Eir AoiSeason 4, cour 1 (2026)
  • “TACTIC”by DaokoCurrentSeason 4, cour 2 (2026)

Ending Themes

  • “Another colony”by TRUESeason 1, first ending (2018)
  • “Little Soldier”by Azusa TadokoroSeason 1, second ending (2019)
  • “STORYSEEKER”by STEREO DIVE FOUNDATIONSeason 2, Part 1 (2021)
  • “Reincarnate”by Takuma TerashimaSeason 2, Part 2 (2021)
  • “Believer”by Rin KurusuSeason 3 (2024)
  • “Katsubō”by CiONSeason 4, cour 1 (2026)
  • “Hymnal”by Azusa TadokoroCurrentSeason 4, cour 2 (2026)

Series Timeline

  1. 2013

    Fuse begins serialising the story as a web novel on Shōsetsuka ni Narō.

  2. 2014

    Micro Magazine publishes the first light novel volume, with art by Mitz Vah.

  3. 2015

    Taiki Kawakami's manga adaptation begins in Monthly Shōnen Sirius.

  4. 2018

    The TV anime by Eight Bit premieres in October; Season 1 runs for 24 episodes.

  5. 2021

    Season 2 airs in two parts, with the cosy spin-off The Slime Diaries between them.

  6. 2022

    The first film, Scarlet Bond, opens in Japanese cinemas in November.

  7. 2023

    The three-episode special Visions of Coleus is released in November.

  8. 2024

    Season 3 airs from April to September, covering the Founding Festival.

  9. 2025

    The light novel series ends with volume 23 in November.

  10. 2026

    The second film, Tears of the Azure Sea, opens in February, and Season 4 begins in April as a five-cour run.

Quick Answers

Is That Time I Got Reincarnated as a Slime finished?

Yes. That Time I Got Reincarnated as a Slime has finished airing, so you can watch the complete story from start to end without waiting for new episodes.

What genre is That Time I Got Reincarnated as a Slime?

That Time I Got Reincarnated as a Slime is a Fantasy and Comedy and Action anime. You can browse more titles like it on our Fantasy anime page.

When did That Time I Got Reincarnated as a Slime release?

That Time I Got Reincarnated as a Slime first released in Fall 2018. It is a TV series.

How many episodes does That Time I Got Reincarnated as a Slime have?

The four TV seasons total 96 episodes so far: 24 each in Seasons 1, 2 and 3, plus the first 24 episodes of Season 4, which aired from April to September 2026. There are also two films, a three-episode special called Visions of Coleus and the cosy spin-off The Slime Diaries.

Will there be more of the Slime anime after Season 4's first episodes?

Yes. Season 4 is an unusually long season planned across five cours. Its first two cours aired from April to September 2026, the third cour is scheduled for July 2027, and the remaining cours will follow, so the story is far from over.

Should I read the light novel or manga, or just watch the anime?

Any route works. The light novels by Fuse are the original, most detailed version and finished with volume 23 in November 2025. The anime closely follows Taiki Kawakami's manga adaptation, which keeps the novels' story in a slightly tighter form, so anime viewers miss very little.

Can I start watching from Season 4?

It is better to start at Season 1. Rimuru's nation, his skills and his friendships are built up season by season, and Season 4 assumes you know characters like Hinata, Diablo and the Demon Lords. The good news is the early seasons are easy, fast viewing.

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