I've Been Killing Slimes for 300 Years and Maxed Out My Level

Suddenly dying from overwork, salarywoman Azusa Aizawa finds herself before an angel, who allows her to reincarnate into a new world as an immortal witch, where she spends her days killing slimes for money on an otherwise eternal vacation. But even the minimal experience points from slimes will add up after hundreds of years, and Azusa discovers that she accidentally reached the maximum level! Fearing that her strong abilities will attract work and force her back to a life of overexertion, she d...

Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita has been published in English as I've Been Killing Slimes for 300 Years and Maxed Out My Level by Yen Press since January 28, 2020.