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

I’ve Been Killing Slimes for 300 Years and Maxed Out My Level (2021 – 2025)

2021 • 2 seasons • Animation, Comedy • TV-14
6.2/10 2,228
79% 227
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On August 9, 2026
#7871 ▲ 99
7871st by attention TV show online
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7.7 Attention Score
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United States
Source JustWatch
14+•Apr 10, 2021 – Jun 21, 2025
2 Seasons•24 Episodes•Ended
Original I've Been Killing Slimes for 300 Years and Maxed Out My Level
Language Japanese
NMTW 71% Good
We Opened the Coffee Shop Again This Year
Last aired
We Opened the Coffee Shop Again This Year
Aired Jun 21, 2025
S2:E12

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I've Been Killing Slimes for 300 Years and Maxed Out My Level
I've Been Killing Slimes for 300 Years and Maxed Out My Level
7.7

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Seasons / Episodes

Trailer of Season 2

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Trailer [Subtitled]

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Episodes & Dates
Age rating: 14+
MPAA rating: TV-14
NMTW Rating:
71% Good
Seasons: 2
Episodes: 24
Episode duration: 24 min

Description:

This series follows a woman who died from overwork and is reborn as an immortal witch, starting a 300-year life. To survive, she performs everyday tasks like battling monsters for money, unknowingly earning massive experience points. She reaches level 99 – the highest possible in this world’s game-like system – and becomes the subject of widespread rumors. Suddenly, adventurers, dragons, and even someone claiming to be her daughter seek her out. Despite her inexperience, her incredible power makes her the most powerful being in the world. But this fame threatens the peaceful life she’s built. The series blends humor, self-discovery, and unexpected challenges as she navigates her extraordinary destiny.

Alternative title: I've Been Killing Slimes for 300 Years and Maxed Out My Level
Release year: 10.04.2021 – 21.06.2025
Language: Japanese
Network: AT-X
Status: Ended
Type: Series

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