Slime Taoshite 300-Nen, Shiranai Uchi ni Level Max ni Natteshimatta #14

Slime Taoshite 300-Nen, Shiranai Uchi ni Level Max ni Natteshimatta, known in English as I've Been Killing Slimes for 300 Years and Maxed Out My Level, originated as a light novel series written by Kisetsu Morita and illustrated by Benio. The series began its life as a web novel published on the user-generated site Shōsetsuka ni Narō in 2016 before being picked up for print publication by SB Creative under their GA Novel imprint. The narrative follows Azusa Aizawa, an office worker who dies from overwork and is reincarnated as an immortal witch, leading a peaceful life that is upended when her reputation for being the strongest level-max witch spreads.

Volume 14 of the light novel series continues the established tone of the franchise, which emphasizes a 'slow life' fantasy aesthetic that contrasts with more traditional high-stakes adventure tropes. Benio’s character designs are central to the series' appeal, featuring a clean, soft-palette aesthetic that complements the lighthearted, episodic nature of the storytelling. Since its debut, the series has received critical appreciation for its cozy atmosphere, leading to a successful manga adaptation and an anime series that further cemented its place in the modern isekai genre.