Shadow Vein

In a city where the spiritual and the human worlds bleed into each other, unseen forces shape the fate of those born different. Itsuki never believed in spirits—until he was dragged into a hidden world of ancient onmyōji, cursed bloodlines, and shadow-bound contracts. Beneath the surface of modern Tokyo lies a network of sealed mansions, forgotten rituals, and entities that feed on human weakness. Guided by the enigmatic and dangerously perceptive Shion, Itsuki begins to uncover a truth far darker than folklore. Something ancient is stirring. A presence that does not simply haunt the world… but lives within it. As dormant power awakens in his veins, Itsuki must confront the question that defines his fate: Is he meant to fight the shadows— —or become one? Shadow Vein is a supernatural seinen series about inheritance, identity, and the thin line between power and corruption.In a city where the spiritual and the human worlds bleed into each other, unseen forces shape the fate of those born different. Itsuki never believed in spirits—until he was dragged into a hidden world of ancient onmyōji, cursed bloodlines, and shadow-bound contracts. Beneath the surface of modern Tokyo lies a network of sealed mansions, forgotten rituals, and entities that feed on human weakness. Guided by the enigmatic and dangerously perceptive Shion, Itsuki begins to uncover a truth far darker than folklore. Something ancient is stirring. A presence that does not simply haunt the world… but lives within it. As dormant power awakens in his veins, Itsuki must confront the question that defines his fate: Is he meant to fight the shadows— —or become one? Shadow Vein is a supernatural seinen series about inheritance, identity, and the thin line between power and corruption.In a city where the spiritual and the human worlds bleed into each other, unseen forces shape the fate of those born different. Itsuki never believed in spirits—until he was dragged into a hidden world of ancient onmyōji, cursed bloodlines, and shadow-bound contracts. Beneath the surface of modern Tokyo lies a network of sealed mansions, forgotten rituals, and entities that feed on human weakness. Guided by the enigmatic and dangerously perceptive Shion, Itsuki begins to uncover a truth far darker than folklore. Something ancient is stirring. A presence that does not simply haunt the world… but lives within it. As dormant power awakens in his veins, Itsuki must confront the question that defines his fate: Is he meant to fight the shadows— —or become one? Shadow Vein is a supernatural seinen series about inheritance, identity, and the thin line between power and corruption.