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

Name: I've Been Killing Slimes for 300 Years and Maxed Out My Level
Genre: Action, Adventure, Animation
Released: 2021-01-01
Rating: 6
Cast: Aoi Yuuki, Kaede Hondo, Sayaka Senbongi, Minami Tanaka, Sayaka Harada

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

2021 - 2025| 2 seasons| IMDb 6.0

I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) is currently available in the UK on Crunchyroll. Last updated 20 January 2026.

Streaming availability last checked 20 January 2026

Action Adventure Animation

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...

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Streaming info last checked: 20 Jan 2026

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

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