That Time I Got Reincarnated as a Slime

That Time I Got Reincarnated as a Slime (2018 – ...)

2018 • 4 seasons • Action & Adventure, Animation • TV-PG

On August 10, 2026

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photo from the episode

Episode 21 — Shizu-san's Students

Season 1 • That Time I Got Reincarnated as a Slime

Released: 2019-02-26 • Action & Adventure/Animation/Sci-Fi & Fantasy/Comedy

82%

User score

Rimuru becomes the new teacher for Shizu's students. However, having been summoned into this world against their will and facing shortened lifespans as a result, the children's feelings are complicated, and they're reluctant to accept Rimuru. So Rimuru proposes a series of mock battles with each of them to ascertain their abilities and allow them to let off steam.

Where to Stream Episode 21

Season 1 · Episode 21 · Streaming in USA

JustWatch

Cinemax Amazon Channel

Cinemax Apple TV Channel

Episodes

Episode 1
The Storm Dragon, Veldora
2018-10-02

Episode 2
Meeting the Goblins
2018-10-09

Episode 3
Battle at the Goblin Village
2018-10-16

Episode 4
In the Kingdom of the Dwarves
2018-10-23

Episode 5
Hero King, Gazel Dwargo
2018-10-30

Episode 6
Shizu
2018-11-06

Episode 7
Conqueror of Flames
2018-11-13

Episode 8
Inherited Will
2018-11-20

Episode 9
Attack of the Ogres
2018-11-27

Episode 10
The Orc Lord
2018-12-04

Episode 11
Gabiru is Here!
2018-12-11

Episode 12
The Gears Spin Out of Control
2018-12-18

Episode 13
The Great Clash
2018-12-25

Episode 14
The One Who Devours All
2019-01-08

Episode 15
The Jura Forest Alliance
2019-01-15

Episode 16
Demon Lord Milim Attacks
2019-01-22

Episode 17
The Gathering
2019-01-29

Episode 18
Evil Creeps Closer
2019-02-05

Episode 19
Charybdis
2019-02-12

Episode 20
Yuuki Kagurazaka
2019-02-19

Episode 21
Shizu-san's Students
2019-02-26

Episode 22
Conquering the Labyrinth
2019-03-05

Episode 23
Saved Souls
2019-03-12

Episode 24
Black and the Mask
2019-03-19

Information

Episode air date	26.02.2019
Episode runtime	24 min
Episode rating	8.17
Genres	Action & Adventure / Animation / Sci-Fi & Fantasy / Comedy
TMDB series rating	8.4
IMDb series rating	8.0
Series status	Returning series
Age rating	6+
Country	JP

Trailer of Season 1

Additional videos

Season 1 - Opening 2 | Meguru Mono

Season 1 - Opening 2 | Meguru Mono

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Season 1 - Opening 1 | Nameless story

Season 1 - Opening 1 | Nameless story

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Cast

Miho Okasaki
Rimuru (voice)

Tomoaki Maeno
Veldora (voice)

Takuya Eguchi
Souei (voice)

Hochu Otsuka
Hakurou (voice)

Asuna Tomari
Gobta (voice)

Chikahiro Kobayashi

Chikahiro Kobayashi
Ranga (voice)

Jun Fukushima
Gabiru (voice)

Rie Tanaka
Trainie (voice)

Rina Hidaka
Milim (voice)

Anzu Haruno
Rimiris (voice)

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