I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) — Where to Watch: Streaming Availability & Viewing Options

First aired: Apr 10, 2021 Episode runtime: 24 min Seasons: 2 Episodes: 24 Status: Ended Rating: 3.1/10 Network: AT-X Animation Comedy Sci-Fi & Fantasy

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Trailer

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Quick take

I've Been Killing Slimes for 300 Years and Maxed Out My Level leans into Animation conventions while keeping the story easy to follow. Notable cast includes Aoi Yuuki, Kaede Hondo, Sayaka Senbongi and Minami Tanaka. It currently has 2 seasons and 24 episodes. Best for viewers who like a straightforward setup with room for character dynamics. Viewer ratings sit around 3.1/10, but mileage can vary depending on what you like. Availability can change by region and time—use this page to check current streaming, rental, or purchase options.

Overview

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?!

Cast & crew

Cast: Aoi Yuuki, Kaede Hondo, Sayaka Senbongi, Minami Tanaka, Sayaka Harada, Manami Numakura

Streaming Availability

We refresh this page regularly, but we could not confirm an official streaming, rental, or purchase option for I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) at this time.

Availability can change by region and platform. Check back later for updates.

Where to Watch Legally

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Note: we list legal viewing options only. Catalogs and prices can change.

Seasons & episodes

Jump to a season, then browse episodes below.

1. Along Came a Goddess

Posted by: admin Aired on: Apr 5, 2025

2. We Searched for an Undead

Posted by: admin Aired on: Apr 12, 2025

3. We Went to Beelzebub's House

Posted by: admin Aired on: Apr 19, 2025

4. We Went Looking for a Mandragora

Posted by: admin Aired on: Apr 26, 2025

5. I Became Mama Yufufu's Daughter

Posted by: admin Aired on: May 3, 2025

6. Laika Entered a Martial Arts Tournament

Posted by: admin Aired on: May 10, 2025

7. I Met a Pine Spirit

Posted by: admin Aired on: May 17, 2025

8. We Went Swimming in the Sea

Posted by: admin Aired on: May 24, 2025

9. We Met the Evil Spirit Queen

Posted by: admin Aired on: May 31, 2025

10. We Went to the Demon King's Birthday Party

Posted by: admin Aired on: Jun 7, 2025

11. I Battled a Traditional Goddess

Posted by: admin Aired on: Jun 14, 2025

12. We Opened the Coffee Shop Again This Year

Posted by: admin Aired on: Jun 21, 2025

FAQ

Is I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) on streaming?
We refresh this page regularly, but we could not confirm an official streaming, rental, or purchase option for I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) at this time.

Where can I watch it legally?
Use the providers section above as a starting point. Availability depends on region and can change over time.

Does it have a trailer?
Yes. Use the Trailer section above to play it.

How many seasons does it have?
It has 2 seasons (24 episodes).