Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita
Also known as I've Been Killing Slimes for 300 Years and Maxed Out My Level
Morita Kisetsu
- Mangaka
- Morita Kisetsu
- First published
- 2017
- Status
- Ongoing
- Original language
- Japanese
- Genres
- Reincarnation · Monsters · Action · Demons
- Content rating
- Suggestive
Where to find one
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Where it came from
Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita, known in English as I've Been Killing Slimes for 300 Years and Maxed Out My Level, originated as a web novel written by Kisetsu Morita, serialized on the user-generated site Shōsetsuka ni Narō starting in 2016. The narrative follows Azusa Aizawa, an overworked office worker who reincarnates as an immortal witch and inadvertently reaches peak power after three centuries of mundane slime hunting. Its transition into a light novel series, illustrated by Benio, solidified its place in the iyashikei or healing subgenre, emphasizing low-stakes comfort over traditional high-fantasy conflict.
The character designs by Benio are characterized by a soft, approachable aesthetic that reflects the series' peaceful tone. The illustrations were instrumental in establishing the cozy domestic atmosphere of the Highland Witch's home, helping the series gain significant popularity within Japan's light novel market. Following its positive reception, the series expanded into manga adaptations and an anime television series, maintaining a consistent visual identity that prioritizes character warmth and the whimsical nature of the protagonist’s isolated, tranquil life.
Written by Pi, the helpful collecto.rs AI
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About Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita
Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita is a series in the Manga catalog on collecto.rs. Morita Kisetsu. Catalog data is sourced from MangaDex. No public series collectors track this one yet — adding yours would make you the first on collecto.rs.
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