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I've Been Killing Slimes for 300 Years and Maxed Out My Level
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I've Been Killing Slimes for 300 Years and Maxed Out My Level
TV ShowEndedAnimationComedySci-Fi & Fantasy

I've Been Killing Slimes for 300 Years and Maxed Out My Level

Rating7.9/10
First Air2021
Seasons2
Episodes24
Votes229

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?!

Watch NowTrailer

First Aired

April 10, 2021

Last Aired

June 21, 2025

Original Language

ja

Popularity

9

Type

Scripted

Official Website

Visit Website →

Production Companies

REVOROOT

REVOROOT

Nippon Columbia

Nippon Columbia

Hakuhodo DY Music & Pictures

Hakuhodo DY Music & Pictures

BS11

BS11

STUDIO MAUSU

STUDIO MAUSU

AT-X

AT-X

THE KLOCKWORX

THE KLOCKWORX

movic

movic

DMM GAMES

DMM GAMES

Bushiroad

Bushiroad

Medicos Entertainment

Medicos Entertainment

Square Enix

Square Enix

SB Creative

SB Creative

Seasons & Episodes

Episodes

After many years of being a corporate slave, Azusa Aizawa abruptly passes away due to severe exhaustion. Seemingly headed for the afterlife, she meets a goddess who bestows her with immortality alongside a peaceful life in another world. There, Azusa enjoys her days tending to her farm, protecting the nearby village, and killing about 25 slimes per day—a routine that continues for at least three centuries. However, this rather monotonous cycle begins to change when Azusa suddenly finds out that she has reached level 99—the maximum possible level—from slimes alone. Despite desperately trying to hide this fact in fear of ending her slow life, rumors of her strength spread nevertheless. Soon enough, various people throughout the continent, start to appear at her doorstep—some seeking a battle, others asking for her assistance. Meeting friends and acquaintances who soon become family, Azusa finds she can live a life far better with others than when she was alone.

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