In a fractured world teetering on the brink of annihilation, Myura, a girl consumed by tragedy, unlocks a forbidden power after the brutal betrayal and loss of her family. With a cursed sword in hand and dark magic coursing through her veins, she sets out to tear down the kingdom that wronged her, even if it means becoming the villain of her own story. Opposing her is Kazuki, a knight of light magic and Myura’s childhood friend. Bound by shared memories but divided by their paths, he is sworn to defend the kingdom Myura seeks to destroy. Their clashes are battles of light and shadow, filled with emotion, regret, and the weight of choices that could shape the fate of their world. As kingdoms crumble and alliances shift, a darker threat emerges—a demihuman faction known as the Shinigami, whose sinister leader weaves chaos from the shadows and controlled by the demon king. Myura and Kazuki must face their inner demons, their shared history, and a world unraveling around them. With themes of vengeance, redemption, and the thin line between hero and villain, this is a tale of two fates intertwined, where friendship and duty collide, and the cost of power is far greater than it seems.