Owari no Seraph

In a single, devastating instant, the world as humanity knew it ended. A mysterious virus of unknown origin swept across the globe, sparing only those under the age of thirteen—and condemning everyone else to a swift and merciless death. With civilization in ruins and the adult population annihilated, the surviving children found themselves helpless against a far older and more sinister threat. Emerging from the darkness, vampires seized control of the shattered world, establishing a brutal hierarchy in which the remnants of humanity are herded into captivity, bred, and harvested as a renewable source of sustenance. Among the countless souls dragged into this nightmare is Hyakuya Yuuichirou, a defiant young boy trapped alongside his makeshift family within an orphanage that has become a penitentiary. Reduced to the status of mere livestock, the children endure daily blood extractions and the ever-present terror of their vampiric overlords. Most have succumbed to a crushing apathy, resigned to a life of servitude beneath the eternal night. Yuuichirou, however, burns with an entirely different flame. While despair festers in the hearts of his companions, his spirit ignites with a singular, ferocious obsession—not just to escape, but to annihilate. He dreams not of freedom, but of vengeance; not of survival, but of slaughter. Every vampire that drinks from his veins only steels his resolve to one day wield a blade that will carve a path of retribution through their immortal ranks, no matter the cost.