I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 1

After living a painful life as an office worker, Azusa ended her short lifeby 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 aspleasantly as possible. She ekes out a living by hunting down the easiesttargets - the slimes! But after centuries of doing this simple job, she's endedup with insane powers...how will she maintain her low key life now?!