I've Been Killing Slimes for 300 Years and Maxed Out My Level v01 (2020)

English translation of the Japanese manga Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Natteshimatta (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).
In this manga adaptation of the funny and heartwarming light novel series, a former office worker decides to live a calm and peaceful life after dying of overwork-despite becoming the most powerful witch in a new world!
From corporate slave to a laid-back witch - reincarnation's a pretty sweet deal! Or so Azusa believes until her maxed-out status comes to light...In this new manga adaptation of the original novel, enjoy the hilarity that ensues as Azusa attempts to evade all forms of adventure and regain her lazy life!