I’ve Been Killing Slimes for 300 Years and Maxed Out My Level(2017)

Slime Taoshite 300-nen, Shiranai Uchi ni Level MAX ni Nattemashita

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!

(Source: Yen Press)