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I've Been Killing Slimes for 300 Years and Maxed Out My Level is a 2021 anime based on the light novel series by Kisetsu Morita.

It premiered in Japan from April 10, 2021 to June 26, 2021, consisting of 12 episodes. The second season premiered on April 5, 2025.

Crunchyroll licensed the series, while Studiopolis produced an English dub of the series, which premiered on its streaming service on May 29, 2021. The second season of the anime premiered on April 5, 2025. The second season's English Dub premiered on April 19, 2025.[1]

Synopsis

An at-home comedy about a powerful girl who doesn’t work too hard!(⋈◍ ˃ᴗ˂ ◍)。✧♡

After dying of overwork in the real world, I’m reincarnated as an immortal witch, and I spend 300 years enjoying a relaxing life. At some point, though, I end up at level 99! All those years spent killing slimes to make the money to pay the bills gave me a ton of experience points… Rumors of the level 99 witch spread, and soon I’m up to my ears in curious adventurers, duelist dragons, and even a monster girl calling me her mom! “This isn’t a dojo, so don’t come here to fight me…!” I’ve never been on an adventure, but I’m the strongest in the world…

What’s going to happen to my relaxing life?!


Cast[]

Image Character Seiyū Dub Actor Season(s). Ep(s).
Main Characters
Azusa Aizawa Aoi Yūki Skyler Davenport 1-2 1-14
Kelly Greenshield 2 15-
Secondary Characters
Laika Kaede Hondo Rachelle Heger 1-2
Falfa Sayaka Senbongi Lizzie Freeman 1-2
Shalsha Minami Tanaka Suzie Yeung 1-2
Halkara Sayaka Harada Xanthe Huynh 1-2
Beelzebub Manami Numakura Erica Mendez 1-2
Rosalie Riho Sugiyama Anne Yatco 1-2
Flatorte Azumi Waki Amber Lee Connors 1-2
Vania Ari Ozawa Allegra Clark 1
Kelsey Maher 2
Fatla Miku Itō Veronica Taylor 1
Abigail Blythe 2
Fighsly /
Fighter Slime
Ayasa Itō Veronica Taylor 1
Abigail Blythe 2
Recurring Characters
Natalie Jr. Sayaka Kikuchi Ryan Bartley 1-2
Pecora /
Provat Pecora Allières
Yukari Tamura Corina Boettger 1-2
Goodly Godly Godness Kikuko Inoue Veronica Taylor 1
Abigail Blythe 2
Eno Hikaru Tono Anairis Quiñones 1-2
Kuku Kotori Koiwai Tara Sands 1
Wizly /
Wizard Slime
Miyuri Shimabukuro Cristina Vee 1
Sandra Yui Ogura TBA 2

Episodic Characters[]

Image Character Seiyū Dub Actor Ep(s).
Season One
Ernst Shinya Takahashi Chris Hackney 1
Natalie Sr. Eri Yukimura TBA
Adventurer Kōhei Yanagi TBA
Bruja Sakura Nakamura TBA
Leila TBA 4
Leila's husband Sōsuke Shimokawa TBA
Laika's father Ryō Sugisaki TBA
Laika's mother Saki Suzuki TBA
Season Two
Forahn
(Waterfall Spirit)
Kako Ikura Rebecca Danae 14
Misami
(Cloud Spirit)
Emiko Takeuchi Hannah Magers
Pondeli Yūko Ōno Nia Celeste 14-15
Yufufu Ai Kayano Kristin Sutton 14, 17

Additional Voices[]

Season One[]

Season Two[]

Notes[]

Transmission via Streaming[]

Company Date Category Format Classification Content Country
May 29, 2021 -
August 14, 2021
Anime Digital Season 1 12 Eps. United States United States
April 19, 2025 -
present
Season 2 1 Ep.

References[]

External Links[]