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

After working herself to death in the corporate world, Azusa Aizawa awakens before a goddess who grants her immortality and a quiet second life in a fantasy realm. Determined to avoid stress, she settles into a gentle routine: farming, helping protect a nearby village, and casually defeating around 25 slimes a day—an easy, steady habit she keeps up for three hundred years.

That peaceful monotony cracks when Azusa discovers she’s somehow reached level 99, the world’s maximum, purely from slimes. Hoping to keep her laid-back life intact, she tries to stay out of the spotlight, but word of her power spreads anyway. Visitors begin arriving at her home, including the dragon Laika and the elf Halkara—some eager to test her strength, others seeking help—and Azusa’s solitary days gradually give way to a growing circle of companions who start to feel like family.