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?!
Where to watch I've Been Killing Slimes for 300 Years and Maxed Out My Level in United States
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Amazon Video
Apple TV StoreClick a service to open I've Been Killing Slimes for 300 Years and Maxed Out My Level there. Availability last verified on June 20, 2026.
Where is I've Been Killing Slimes for 300 Years and Maxed Out My Level streaming around the world?
| Country | Streaming on | Rent / Buy |
|---|---|---|
| United States | Crunchyroll, Crunchyroll Amazon Channel | Amazon Video, Apple TV Store |
| India | Crunchyroll, Sony Liv, Crunchyroll Amazon Channel, Anime Times Amazon Channel | — |
| United Kingdom | Crunchyroll, Crunchyroll Amazon Channel | Apple TV Store |
| Canada | Crunchyroll Amazon Channel, Crunchyroll | Apple TV Store |
| Australia | Crunchyroll, Crunchyroll Amazon Channel | Apple TV Store |
| Germany | Crunchyroll, Crunchyroll Amazon Channel | — |
| France | Crunchyroll, Crunchyroll Amazon Channel | — |
| Spain | Crunchyroll, Crunchyroll Amazon Channel | — |
| Brazil | Crunchyroll, Crunchyroll Amazon Channel | — |
| Japan | Netflix, Amazon Prime Video, Disney Plus, Hulu | Amazon Video |
About 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 is a 2021 Japanese-language animation, comedy and sci-fi & fantasy series. The cast is led by Aoi Yuuki, Kaede Hondo, Sayaka Senbongi. It spans 2 seasons and 24 episodes and has concluded. Viewers rate it 7.9/10 across 200 ratings. In United States, it is currently streaming on Crunchyroll, Crunchyroll Amazon Channel.
I've Been Killing Slimes for 300 Years and Maxed Out My Level was produced by REVOROOT, Nippon Columbia, and Hakuhodo DY Music & Pictures and made in Japan. It was first aired on April 10, 2021, and carries a TV-14 certification.
- First aired
- April 10, 2021
- Last aired
- June 21, 2025
- Original language
- Japanese
- Age rating
- TV-14
- Status
- Ended
- Seasons
- 2 (24 episodes)
- Network
- AT-X
- Country
- Japan
- Production
- REVOROOT, Nippon Columbia, Hakuhodo DY Music & Pictures
I've Been Killing Slimes for 300 Years and Maxed Out My Level cast & crew
The cast features Aoi Yuuki as Azusa (voice), Kaede Hondo as Laika (voice), Sayaka Senbongi as Falfa (voice), Minami Tanaka as Shalsha (voice), Sayaka Harada as Halkara (voice), and Manami Numakura as Beelzebub (voice).
Behind the camera, the score was composed by Keiji Inai.
Is I've Been Killing Slimes for 300 Years and Maxed Out My Level worth watching?
I've Been Killing Slimes for 300 Years and Maxed Out My Level holds an audience score of 7.9/10 from 237 ratings, marking it as well-reviewed animation series.
With 2 seasons and 24 episodes, it's a meaty weekend watch.
If you enjoy animation, comedy, and sci-fi & fantasy, I've Been Killing Slimes for 300 Years and Maxed Out My Level is worth a place on your watchlist.
How and where to watch I've Been Killing Slimes for 300 Years and Maxed Out My Level
In United States, you can stream I've Been Killing Slimes for 300 Years and Maxed Out My Level on Crunchyroll and Crunchyroll Amazon Channel, or rent and buy it on Amazon Video and Apple TV Store. Click any service above to open it directly.
Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.
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Cast of I've Been Killing Slimes for 300 Years and Maxed Out My Level
Aoi Yuuki
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)
I've Been Killing Slimes for 300 Years and Maxed Out My Level — FAQs
▸Where can I watch I've Been Killing Slimes for 300 Years and Maxed Out My Level in United States?
I've Been Killing Slimes for 300 Years and Maxed Out My Level is streaming on Crunchyroll, Crunchyroll Amazon Channel in United States.
▸Is I've Been Killing Slimes for 300 Years and Maxed Out My Level on Crunchyroll?
Yes — I've Been Killing Slimes for 300 Years and Maxed Out My Level is currently available on Crunchyroll in United States.
▸What language is I've Been Killing Slimes for 300 Years and Maxed Out My Level in?
I've Been Killing Slimes for 300 Years and Maxed Out My Level is originally in Japanese. Subtitle and dub options vary by streaming service.
▸How many seasons of I've Been Killing Slimes for 300 Years and Maxed Out My Level are there?
I've Been Killing Slimes for 300 Years and Maxed Out My Level has 2 seasons with 24 episodes in total.
▸What is I've Been Killing Slimes for 300 Years and Maxed Out My Level rated?
I've Been Killing Slimes for 300 Years and Maxed Out My Level is rated TV-14. It holds a 7.9/10 audience score from 237 ratings.
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