In a world ruled by ruthless Mafia families, power isn’t measured by wealth but by the control of Augmenta—ancient artifacts believed to grant superhuman abilities. These mystical relics fuel brutal wars between Mafia clans, where betrayal and bloodshed are the price of supremacy. Amid this violent underworld, Miyamoroto Togai, a high school student born with blindness in his left eye, lives quietly with his sick younger brother, unaware of his dark bloodline.
His life shatters when he finds his home destroyed and his mother murdered, marked by the symbol of the Kurogane Familia—the most feared Mafia clan. Vowing revenge, Togai swears to rise from nothing and obliterate the Kurogane Familia. Guided by Akira, a rogue assassin who betrayed the Kurogane, Togai learns to survive in a merciless world where power is law.
Amid ruthless Mafia politics, allies scarred by their pasts, and enemies lurking in every shadow, Togai must master Augmenta’s power and navigate a deadly web of deception. But in a world built on blood and betrayal, who can he trust? And how far will he go to uncover the truth behind his family's massacre?