Seraph of the End is a dark fantasy action manga set in a post-apocalyptic world where a mysterious virus wipes out most of humanity, allowing vampires to emerge from the shadows and seize control over the surviving population, following Yuichiro Hyakuya, a determined young survivor whose life is shattered after a tragic betrayal and massacre, driving him into a relentless quest for revenge against the vampire race while serving within a military organization that wields cursed demon weapons to combat supernatural threats, as hidden conspiracies, forbidden experiments, ancient powers, and devastating battles gradually reveal a far greater conflict threatening both humans and vampires alike, pushing the story into an emotional and action-packed journey centered on survival, sacrifice, friendship, and the pursuit of freedom, in what is widely known as Owari no Seraph manga, 終わりのセラフ (Owari no Seraph), Seraph of the End, Yuichiro Hyakuya story, vampire apocalypse saga, dark fantasy war series, and supernatural action narrative blending intense combat, psychological drama, and large-scale world-building into one of the most compelling modern vampire manga experiences.