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 15巻

[DeepL Translation - needs review] Volume 1 Introduction: Azusa Aizawa, female, single, company stockbroker. After living only for work, she was reincarnated as an immortal witch and lived a slow life for 300 years, until she reached level 99. What will happen to my slow life?　The Novelist's Novel is the No.1 selling GA novel of all time, and is an at-home comedy about another world! Novelist Noro" is a registered trademark of Hina Project, Inc.

(Translator: DeepL)