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

Azusa’s previous life as an overworked office employee ended tragically when exhaustion claimed her far too soon. Given a second chance, she is reincarnated into a vibrant new world as an immortal witch who will never age. Determined not to repeat the mistakes of her past, she makes a solemn vow to live out her days in complete tranquility, free from stress and unnecessary burdens. To sustain this peaceful existence, she chooses the simplest livelihood imaginable: hunting slimes, the weakest creatures in the realm. For three hundred years, Azusa diligently dispatches these harmless monsters day after day, believing her quiet routine guarantees a perfectly unremarkable life. However, centuries of consistently defeating even the lowest-level foes have yielded an unexpected consequence. Without ever intending to, her relentless daily grind has pushed her abilities to their absolute maximum, granting her extraordinary power. Now faced with strength far beyond what any ordinary witch possesses, Azusa must figure out how to protect the serene, low-key lifestyle she has cherished for centuries before her overwhelming abilities draw unwanted attention.