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

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

2021–20252 Seasons24 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 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?!

Add to Watchlist
Contribute

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?!

Network / Platform
AT-X
Status
Ended
First Aired
10/Apr/2021
Language
Japanese
Schedule
Saturday · 22:30

Latest Episodes

View All
S2 E12We Opened the Coffee Shop Again This Year21/Jun/2025 • 24m
S2 E11I Battled a Traditional Goddess14/Jun/2025 • 24m
S2 E10We Went to the Demon King's Birthday Party07/Jun/2025 • 24m
S2 E9We Met the Evil Spirit Queen31/May/2025 • 24m
Next Air TimeNot announced

Air-time details have not been announced.

TimeScore33%Skip It
Binge Meter48%Slow Burn
Episode PulseQuiet40% activity
Drop Rate0%Very Low
Progress and ratings use your EpisodeTime account
Season 20 / 12 watched

Get ready for more relaxing tales! Azusa Aizawa is a powerful witch who finally reached level 99 and now busies herself with laid-back quests instead. Her family continues to grow as some familiar faces are joined by bright-eyed newcomers. From trips to the beach to a martial arts tournament, you’re invited on Azusa’s carefree and heartwarming adventures of leisure.

S2 E1Along Came a Goddess05/Apr/2025 • 24m
Not rated
S2 E2We Searched for an Undead12/Apr/2025 • 24m
Not rated
S2 E3We Went to Beelzebub's House19/Apr/2025 • 24m
Not rated
S2 E4We Went Looking for a Mandragora26/Apr/2025 • 24m
Not rated
S2 E5I Became Mama Yufufu's Daughter03/May/2025 • 24m
Not rated
S2 E6Laika Entered a Martial Arts Tournament10/May/2025 • 24m
Not rated
S2 E7I Met a Pine Spirit17/May/2025 • 24m
Not rated
S2 E8We Went Swimming in the Sea24/May/2025 • 24m
Not rated
S2 E9We Met the Evil Spirit Queen31/May/2025 • 24m
Not rated
S2 E10We Went to the Demon King's Birthday Party07/Jun/2025 • 24m
Not rated
S2 E11I Battled a Traditional Goddess14/Jun/2025 • 24m
Not rated
S2 E12We Opened the Coffee Shop Again This Year21/Jun/2025 • 24m
Not rated
Season 10 / 12 watched

After many years of being a corporate slave, Azusa Aizawa abruptly passes away due to severe exhaustion. Seemingly headed for the afterlife, she meets a goddess who bestows her with immortality alongside a peaceful life in another world. There, Azusa enjoys her days tending to her farm, protecting the nearby village, and killing about 25 slimes per day—a routine that continues for at least three centuries. However, this rather monotonous cycle begins to change when Azusa suddenly finds out that she has reached level 99—the maximum possible level—from slimes alone. Despite desperately trying to hide this fact in fear of ending her slow life, rumors of her strength spread nevertheless. Soon enough, various people throughout the continent, start to appear at her doorstep—some seeking a battle, others asking for her assistance. Meeting friends and acquaintances who soon become family, Azusa finds she can live a life far better with others than when she was alone.

S1 E1I Maxed Out My Level10/Apr/2021 • 24m
Not rated
S1 E2Along Came the Daughters17/Apr/2021 • 24m
Not rated
S1 E3Along Came an Elf24/Apr/2021 • 24m
Not rated
S1 E4We Went to a Dragon's Wedding01/May/2021 • 24m
Not rated
S1 E5A Ghost Appeared08/May/2021 • 24m
Not rated
S1 E6Along Came a Leviathan15/May/2021 • 24m
Not rated
S1 E7We Beat Up a Demon King22/May/2021 • 24m
Not rated
S1 E8A Fake Witch of the Highlands Appeared29/May/2021 • 24m
Not rated
S1 E9My Daughter Turned Into a Slime and Couldn't Change Back05/Jun/2021 • 24m
Not rated
S1 E10A Minstrel Came to Town12/Jun/2021 • 24m
Not rated
S1 E11I Ate a Mushroom and Turned Into a Child19/Jun/2021 • 24m
Not rated
S1 E12We Opened a Coffee Shop26/Jun/2021 • 24m
Not rated

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

Talk about I've Been Killing Slimes for 300 Years and Maxed Out My Level with the EpisodeTime community.

Back to ShowCommunity

No discussions yet. Be the first to start one.

Ratings & Reviews

0 community reviews

No published reviews yet. Be the first to review this show.

Production Details & External Links

Database information and official source references.

Original title
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
Format
Scripted
Country
Japan
Original language
Japanese
Network / Platform
AT-X · Japan
First aired
10/Apr/2021
Last aired
21/Jun/2025
Seasons
2
Episodes
24
Runtime
24 min
Official schedule
Saturday · 22:30
Official timezone
Asia/Tokyo
Official website
Visit official site
External IDs
TMDb TVMaze IMDb
Full cast and crew

Cast

24 credits
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) Kikuko Inoue Kikuko Inoue Goodly Godly Godness (voice) Eri Yukimura Eri Yukimura Natalie Sr. (voice) Shunsuke Todo Shunsuke Todo Warrior (voice) Yuko Natsuyoshi Yuko Natsuyoshi Monk (voice) Ikuto Kanemasa Ikuto Kanemasa Villager A (voice) Kanako Yanagihara Kanako Yanagihara Villager C (voice) Ryo Sugisaki Ryo Sugisaki Leila's Father (voice) Tomohiro Omachi Tomohiro Omachi Villager D (voice) Akihisa Wakayama Akihisa Wakayama Villager A (voice) Aya Kawakami Aya Kawakami "Saeta Taka" Landlady (voice) Yuki Tamai Yuki Tamai Villager B (voice) Hina Tachibana Hina Tachibana Red Dragon A (voice) Jun Fukazawa Jun Fukazawa Villager B (voice) Rina Takatsuki Rina Takatsuki Red Dragon B (voice) Akihiro Mine Akihiro Mine "Saeta Taka" Master (voice)

Crew

18 credits
Chihiro Ido Art Designer Ken Naito Art Direction Benio Character Designer, Original Series Design Atsushi Kashiwa Prop Designer Kunihisa Sugishima Series Director, Storyboard Artist Mamoru Hatakeyama Director, Storyboard Artist Nanase Tomii Director, Storyboard Artist Nobukage Kimura Series Director, Storyboard Artist Takahiro Okawa Director, Storyboard Artist Yasunori Goto Director, Storyboard Artist Sota Mikami Director of Photography Kyosuke Takada Director Ryuta Imaizumi Director, Key Animation Ryuta Yamamoto Director Toshiaki Kanbara Director Hiroshi Okuda Editor Fumito Miura Associate Producer Mitsuyo Sugiura Associate Producer
Contributors and edit history

0 published changes. View edit history

Similar Shows

Viewer recommendations and smart matches.

Recommend a show
Trapped in a Dating Sim: The World of Otome Games Is Tough for MobsDelicious in DungeonIs It Wrong to Try to Pick Up Girls in a Dungeon?Sasaki and PeepsHeaven's Design TeamKujima: Why Sing, When You Can Warble?