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
- Animation
- Comedy
- Sci-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 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?!
I've Been Killing Slimes for 300 Years and Maxed Out My Level is an anime comedy series about an immortal witch who inadvertently becomes the strongest being in the world through centuries of mundane monster-slaying. Originally released in April 2021, the series has completed two seasons and follows her reluctant rise to legendary status as adventurers and monsters seek her out despite her desire for a peaceful life.
When does I've Been Killing Slimes for 300 Years and Maxed Out My Level come out?
Where to watch
Streaming availability in United States
United States
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Digital purchase & rental in United States
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BrazilTop cast
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Aoi YuukiAzusa (voice)
Kaede HondoLaika (voice)
Sayaka SenbongiFalfa (voice)
Minami TanakaShalsha (voice)
Sayaka HaradaHalkara (voice)
Manami NumakuraBeelzebub (voice)
Riho SugiyamaRosary (voice)
Azumi WakiFratorte (voice)
Yukari TamuraPecora (voice)
Kikuko InoueGoodly Godly Godness (voice)
Eri YukimuraNatalie Sr. (voice)
Shunsuke TodoWarrior (voice)
Yuko NatsuyoshiMonk (voice)
Ikuto KanemasaVillager A (voice)
Kanako YanagiharaVillager C (voice)
Trailer
Season 2 Official Trailer [Subtitled]
Seasons
2 seasons
Episodes · Season 2
Full season| # | Title | Air date | Runtime | Rating |
|---|---|---|---|---|
| 01 | Along Came a Goddess | 2025-04-05 | 24m | 6.0 |
| 02 | We Searched for an Undead | 2025-04-12 | 24m | 6.0 |
| 03 | We Went to Beelzebub's House | 2025-04-19 | 24m | 5.5 |
| 04 | We Went Looking for a Mandragora | 2025-04-26 | 24m | 6.0 |
| 05 | I Became Mama Yufufu's Daughter | 2025-05-03 | 24m | 7.0 |
| 06 | Laika Entered a Martial Arts Tournament | 2025-05-10 | 24m | 7.0 |
| 07 | I Met a Pine Spirit | 2025-05-17 | 24m | 7.0 |
| 08 | We Went Swimming in the Sea | 2025-05-24 | 24m | 6.0 |
| 09 | We Met the Evil Spirit Queen | 2025-05-31 | 24m | 6.0 |
| 10 | We Went to the Demon King's Birthday Party | 2025-06-07 | 24m | 7.0 |
| 11 | I Battled a Traditional Goddess | 2025-06-14 | 24m | 7.0 |
| 12 | We Opened the Coffee Shop Again This Year | 2025-06-21 | 24m | 7.0 |
Related & spin-offs
Other titles fans of I've Been Killing Slimes for 300 Years and Maxed Out My Level tend to follow.
The Slime DiariesConfirmed2021
By the Grace of the GodsConfirmed2020
The Faraway PaladinConfirmed2021
The Reincarnation of the Strongest Exorcist in Another WorldConfirmed2023
That Time I Got Reincarnated as a SlimeConfirmed2018
The Misfit of Demon King AcademyConfirmed2020
Parallel World PharmacyConfirmed2022
The Greatest Demon Lord Is Reborn as a Typical NobodyConfirmed2022
Is I've Been Killing Slimes for 300 Years and Maxed Out My Level renewed or cancelled?
I've Been Killing Slimes for 300 Years and Maxed Out My Level has ended — it concluded its planned run.
I've Been Killing Slimes for 300 Years and Maxed Out My Level — frequently asked
When did this series first air?
The series premiered on April 10, 2021.
How many seasons are there?
There are 2 seasons that have been completed.
Is the series still ongoing or finished?
The series has ended; both seasons are fully released.
What's the main premise?
The story follows a woman reincarnated as an immortal witch who spends 300 years leisurely killing slimes for income, only to discover she's become level 99—the world's strongest warrior—and must navigate unwanted attention from adventurers and monsters seeking her out.
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