
I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021)
Overview
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! I’ve never been on an adventure, but I’m the strongest in the world… What’s going to happen to my relaxing life?!
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At a glance
- Original title
- スライム倒して300年、知らないうちにレベルMAXになってました
- Release date
- April 10, 2021
- Seasons and episodes
- 2 seasons, 24 episodes
- Time to watch
- 10 hours
- Genres
- Comedy, Science Fiction, Fantasy
- Country
- Japan
- Creator
- Seiji Miyazaki, Hitoshi Yagi, Takahiro Yamanaka
- TMDB rating
- 7.8/10
How many episodes and hours
- Season 112 episodes · 5 h · 2021
- Season 212 episodes · 5 h · 2025
Cast

Aoi Yuki
Azusa (voice)

Kaede Hondo
Laika (voice)

Sayaka Senbongi
Falfa (voice)

Minami Tanaka
Shalsha (voice)

Sayaka Harada
Halkara (voice)

Manami Numakura
Beelzebub (voice)

Riho Sugiyama
Rosary (voice)

Azumi Waki
Fratorte (voice)

Yukari Tamura
Pecora (voice)

Sakura Nakamura
Announcement Voice / Effect Voice (voice) / Leila / Effect Voice (voice) / Voice Effect (voice) / Employee B / Effect Voice (voice) / Magician / Voice Effect (voice) / Villager D / Effect Voice (voice) / Effect Voice (voice) / Coffee Shop Customer (voice)

Shinya Takahashi
Blue Dragon B (voice) / Ernst (voice) / Referee (voice) / Villager A (voice) / Asmodian Executive B (voice) / Villager B (voice)

Ari Ozawa
Vania (voice)










