The malevolent Shinma are shape-shifting beings with an unquenchable thirst for destruction, hoping to unleash their malice upon the Earth. Miyu, known as the Princess of Darkness, is the chosen one destined to free the world of these malevolent entities. Despite possessing the power to grant eternal happiness, Miyu feels torn between two worlds, often struggling with feelings of alienation and loneliness. Larva, who was once a malevolent Shinma, is both Miyu's closest friend and most loyal protector. Together, they embark on a perilous journey that exposes the fragility of the human soul and the harsh realities of loss. Miyu's knowledge of her true identity sets her apart from humanity, and she must navigate the tricky balance between being a predator and prey.