I've Been Killing Slimes for 300 Years and Maxed Out My Level #1

This first volume of the manga adaptation introduces Azusa Aizawa, a former office worker reincarnated as an immortal witch who spends three centuries peacefully slaying slimes in the highlands, inadvertently reaching level 99. Her quiet life is disrupted when she adopts a young dragon girl named Laika and gains a reputation that attracts other quirky beings to her home. The collection adapts the early chapters of the original light novel series, setting up the slice-of-life fantasy comedy with a focus on overpowered yet laid-back adventures.