I've Been Killing Slimes for 300 Years and Maxed Out My Level
Series 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?!
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.
2 Seasons • 24 Episodes
24 min per episode
2021 – 2025
Premiered: Sat, Apr 10, 2021
Creative Production Team
Latest Aired Episode
Season 2, Episode 12: “We Opened the Coffee Shop Again This Year”
It's time for Flatta's annual dance festival again, and The Witch's House makes its long-awaited return.
Seasons & Episodes Breakdown
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Trailer [Subtitled]Official
Type: Trailer • Published 2021-02-20
Cast & Creators
Explore Star Directory →
Creative Leadership & Key Crew
Kunihisa Sugishima
Naohiro Fukushima, Kisetsu Morita
Keiji Inai
Department Leadership Roster
Keiji Inai
Original Music Composer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
TV-14: Parents Strongly Cautioned — Contains material unsuitable for children under 14.
International Certification Matrix
Parents Strongly Cautioned — Contains material unsuitable for children under 14.
FSK 12 — Restricted to viewers aged 12 and older.
14+ Parents Strongly Cautioned.
Interdit aux moins de 12 ans — 12+ only.
Mature — Recommended for viewers 15 and older.
Production Stills & Gallery
Official cinematic photography and background stills for I've Been Killing Slimes for 300 Years and Maxed Out My Level.
Shows Similar to I've Been Killing Slimes for 300 Years and Maxed Out My Level
Series sharing comparable tone, character dynamics, and narrative themes
5.8Anime
7.0
4.8
6.8Anime
7.2Anime
8.8
10.0Anime
3.8Anime
8.1Anime
5.8Anime
7.1
7.0Anime
10.0Anime
5.4
7.0Anime
7.0
Anime
9.2
More Series Like I've Been Killing Slimes for 300 Years and Maxed Out My Level
Shows sharing similar genres, audiences, and storylines.
Frequently Asked Questions About I've Been Killing Slimes for 300 Years and Maxed Out My Level
Key facts, seasons breakdown, and credits for search engines and AI assistants.
What is I've Been Killing Slimes for 300 Years and Maxed Out My Level about?
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?!
How many seasons does I've Been Killing Slimes for 300 Years and Maxed Out My Level have?
I've Been Killing Slimes for 300 Years and Maxed Out My Level comprises 2 seasons available to explore.
Who stars in I've Been Killing Slimes for 300 Years and Maxed Out My Level?
Key cast members in I've Been Killing Slimes for 300 Years and Maxed Out My Level include Aoi Yuuki, Kaede Hondo, Sayaka Senbongi, Minami Tanaka, Sayaka Harada.
Who created or directed 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 was developed and directed by Kunihisa Sugishima.