While Killing Slimes for 300 Years, I Became the MAX Level Unknowingly summary: You are reading While Killing Slimes for 300 Years, I Became the MAX Level Unknowingly manga, one of the most popular manga covering in Fantasy, Manga, Shoujo, Slice of life, Supernatural genres, written by Morita Kisetsu, Benio at MangaBuddy, a top manga site to offering for free. While Killing Slimes for 300 Years, I Became the MAX Level Unknowingly has 92 translated chapters and translations of other chapters are in progress. Lets enjoy. If you want to get the updates about latest chapters, lets create an account and add While Killing Slimes for 300 Years, I Became the MAX Level Unknowingly to your bookmark. After living a painful life as an office worker, Azusa ended her short life by dying from overworking. So when she found herself reincarnated as an undying, unaging witch in a new world, she vows to spend her days stress free and as pleasantly as possible. She ekes out a living by hunting down the easiest targets - the slimes! But after centuries of doing this simple job, she's ended up with insane powers...how will she maintain her low key life now?!