---
title: "I've Been Killing Slimes for 300 Years and Maxed Out My Level"
year: 2021
canonical_url: "https://www.archytele.com/show/i-ve-been-killing-slimes-for-300-years-and-maxed-out-my-level-2021"
media_type: "tv"
tmdb_id: 99073
imdb_id: "tt13248062"
status: "Ended"
seasons_count: 2
episodes_count: 24
runtime_minutes: 24
community_rating: 7.8
vote_count: 240
content_rating: "TV-14"
---

# I've Been Killing Slimes for 300 Years and Maxed Out My Level (2021) — Television & Cinema Intelligence Dossier

> **Archytele Living Vault Canonical Record**: https://www.archytele.com/show/i-ve-been-killing-slimes-for-300-years-and-maxed-out-my-level-2021

## Executive Summary & Cultural Positioning

I've Been Killing Slimes for 300 Years and Maxed Out My Level is an anime television series that premiered in April 2021. The story follows a woman who dies from overwork in the real world and is subsequently reincarnated as an immortal witch. Seeking a peaceful existence, she spends three hundred years living a relaxing life while killing slimes to earn money. Over time, these activities unintentionally grant her enough experience points to reach level 99, making her the strongest being in the world. Her status as a powerful witch eventually attracts unwanted attention, leading to visits from curious adventurers, duelist dragons, and a monster girl who identifies her as a mother figure. These events threaten to disrupt the quiet life she has cultivated. The series adaptation was confirmed in October 2019 and features a voice cast that includes Aoi Yuki and Kaede Hondo. The show is available for streaming on platforms such as Crunchyroll and Netflix. The original creator of the source material is Morita Kisetsu.

## The Hook & The Verdict

**The Hook**: "A reincarnated immortal witch accidentally becomes the world's strongest by killing slimes for 300 years."

### Why Watch
- Unique take on the overpowered protagonist trope
- Gentle humor and wholesome interactions
- Creative world-building around mundane activities

### Caveats & Content Note
- Slow pacing may not appeal to action seekers
- Some repetitive elements in early episodes
- Tone & Suitability: Suitable for teens and up, with mild fantasy violence and comedic situations.

**Micro-Themes & Vibe Matrix**: slice-of-life, fantasy, comedy, isekai, relaxed

## Streaming Availability Matrix

| Region | Stream (Subscription) | Free / Ads | Rent / Buy |
| :--- | :--- | :--- | :--- |
| **United States (US)** | Crunchyroll, Crunchyroll Amazon Channel | None | Amazon Video, Apple TV Store |
| **United Kingdom (GB)** | Crunchyroll, Crunchyroll Amazon Channel | None | Apple TV Store |
| **Canada (CA)** | Crunchyroll Amazon Channel, Crunchyroll | None | Apple TV Store |
| **Australia (AU)** | Crunchyroll, Crunchyroll Amazon Channel | None | Apple TV Store |

## Season Architecture & Lore Primers

### Season 1 (12 Episodes)
The first season of I've Been Killing Slimes for 300 Years and Maxed Out My Level follows the story of Azusa Aizawa, a woman who dies due to severe exhaustion. After her death, she is given immortality by a goddess and is sent to live in another world. Azusa spends her days tending to her farm, protecting the nearby village, and killing slimes. This routine continues for at least three centuries.

However, Azusa's life is disrupted when she discovers that she has reached the maximum possible level from killing slimes alone. This news spreads, and various people from the continent begin to appear at her doorstep, some seeking a battle and others asking for her assistance. As a result, Azusa forms connections with these individuals, who eventually become like family to her.

The season explores Azusa's transition from a solitary life to one filled with relationships and new experiences.

### Season 2 (12 Episodes)
I've Been Killing Slimes for 300 Years and Maxed Out My Level Season 2 continues the overarching saga across 12 episodes.

**Essential Lore Primer (Before Watching S2)**:
- Picks up essential narrative continuity directly following the events of I've Been Killing Slimes for 300 Years and Maxed Out My Level Season 1.
- Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
- Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
- Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.

## Filler vs. Essential Episode Classifier

- **Total Tracked Episodes**: 24
- **Crucial Mytharc Episodes**: 6 (25%)
- **Character Core Episodes**: 18 (75%)
- **Side Quest / Filler Episodes**: 0 (0%)

## Key Cast Continuity

- **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)*
- **Manami Numakura** as *Beelzebub (voice)*
- **Riho Sugiyama** as *Rosary (voice)*
- **Azumi Waki** as *Fratorte (voice)*
- **Yukari Tamura** as *Pecora (voice)*
- **Sakura Nakamura** as *Effect Voice (voice)*

## Canonical Frequently Asked Questions

### Q: Is this series based on a manga or light novel?
Yes, it's adapted from a Japanese light novel series written by Kisaki and illustrated by Shiryu.

### Q: What makes the main character so strong?
She gained immense power through 300 years of continuous slime-killing, accumulating experience points unintentionally.

### Q: Does the series have a lot of action scenes?
While there are some combat moments, the focus is more on daily life and character interactions.

### Q: Is the tone serious or comedic?
The series blends both, with a generally lighthearted and humorous approach to fantasy tropes.

### Q: How does the main character interact with others?
She attracts various followers and companions who seek her out due to her legendary status.

## Grounded Source Citations

- [I've Been Killing Slimes for 300 Years and Maxed Out My Level](https://en.wikipedia.org/wiki/I%27ve_Been_Killing_Slimes_for_300_Years_and_Maxed_Out_My_Level)
- [I've Been Killing Slimes For 300 Years And Maxed Out My Level …](https://slime-taoshite-300-nen.fandom.com/wiki/I%27ve_Been_Killing_Slimes_For_300_Years_And_Maxed_Out_My_Level_(Anime))
- [I've Been Killing Slimes For 300 Years And Maxed Out My Level](https://www.crunchyroll.com/series/GW4HM79VM/ive-been-killing-slimes-for-300-years-and-maxed-out-my-level)
- [Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita](https://myanimelist.net/anime/40586/Slime_Taoshite_300-nen_Shiranai_Uchi_ni_Level_Max_ni_Nattemashita)
- [I've Been Killing Slimes for 300 Years and Maxed Out My Level](https://www.imdb.com/title/tt13248062)
- [Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita](https://www.justwatch.com/us/tv-show/ive-been-killing-slimes-for-300-years-and-maxed-out-my-level-2021)

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*Generated by Archytele Open Intelligence Systems. Data verified against TMDB and JustWatch APIs.*