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

Azusa Aizawa, an overworked Japanese corporate drone, dies of exhaustion at her desk. Moved by her tragic plight, a benevolent goddess grants her reincarnation into a fantasy world as an immortal, ageless witch, promising her a peaceful, stress-free existence in a remote cottage near the village of Flata.True to her wish, Azusa spends her days brewing herbal medicines, enjoying the countryside, and hunting the region's abundant, harmless green slimes to earn a modest living. Unbeknownst to her, three centuries pass. Because slimes yield a fixed amount of experience points regardless of their weakness, Azusa’s daily quota of twenty slimes accumulates astronomical numbers over three hundred years. When she finally checks her status, she discovers she has inadvertently reached Level 99, the absolute maximum limit, making her the strongest entity in the world.Desperate to maintain her low profile, Azusa tries to keep her overpowered status a secret, but word inevitably spreads after she effortlessly defeats Beelzebub, the powerful Lord of the Flies, who challenges her to test her strength. Instead of fighting, Azusa simply shares a meal with her, sparking an enduring friendship. As time progresses, Azusa’s solitary cottage transforms into a bustling, unconventional household. She inadvertently collects a devoted surrogate family: the ghost girl Laika, who transforms from a rival red dragon into Azusa’s enthusiastic disciple; Flatorte, a blue dragon who joins after a failed wedding raid; the slime spirits Falfa and Shalsha, born from the accumulated souls of the slimes she killed; the elf apothecary Halkara; and Beelzebub herself.Despite Azusa’s fervent desire for tranquil obscurity, peace is a rare commodity. Her daily routine is constantly disrupted by divine interventions, regional political disputes, and supernatural threats. She must mediate conflicts between rival dragon clans, rescue Halkara from the clutches of jealous demons, travel to the demon realm to cure a plague, and even deal with the Goddess of Agriculture who descends to cause chaos. Through every escalating crisis and comedic mishap, Azusa relies on her absurdly maxed-out stats, creative problem-solving, and immense patience.Ultimately, the central conflict of Azusa’s eternal life is not about defeating ultimate evil, but about safeguarding her hard-earned domestic bliss. Whenever otherworldly trials threaten her peaceful lifestyle, Azusa steps up with overwhelming magical might, proving that while she only wanted a quiet life, she will fiercely protect the eccentric family she has gathered around her. The series concludes with Azusa and her colorful companions continuing their cozy, chaotic adventures together in the idyllic countryside, proving that true happiness lies in finding a place where you truly belong.