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Watch I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) Online — All 2 Seasons

★ 7.9/10 2021–2025 2 Seasons 24 Episodes AnimationComedySci-Fi & Fantasy

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…

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

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?!

Series details

First aired
2021-04-10
Last aired
2025-06-21
Seasons
2
Episodes
24
Genres
Animation, Comedy, Sci-Fi & Fantasy
Rating
7.9/10 (238 votes)
Language
JA
Network
AT-X
Status
Ended

Cast

Aoi Yuuki
Aoi Yuuki
Azusa (voice)
Kaede Hondo
Kaede Hondo
Laika (voice)
Sayaka Senbongi
Sayaka Senbongi
Falfa (voice)
Minami Tanaka
Minami Tanaka
Shalsha (voice)
Sayaka Harada
Sayaka Harada
Halkara (voice)
Manami Numakura
Manami Numakura
Beelzebub (voice)
Riho Sugiyama
Riho Sugiyama
Rosary (voice)
Azumi Waki
Azumi Waki
Fratorte (voice)
Yukari Tamura
Yukari Tamura
Pecora (voice)

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Frequently asked questions

Where can I watch I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021)?

Watch I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) on CineStream — 2 seasons (24 episodes) in HD with subtitles in 20+ languages. Start watching →

How many episodes does I've Been Killing Slimes for 300 Years and Maxed Out My Level have?

I've Been Killing Slimes for 300 Years and Maxed Out My Level has 24 episodes across 2 seasons. Latest aired 2025-06-21.

Is I've Been Killing Slimes for 300 Years and Maxed Out My Level free to watch?

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What's the rating of 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 has a rating of 7.9/10 based on 238 viewer votes on TMDB.

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