In a world where humans and demons coexist, a young girl from a low-class family with light magic healing abilities tries to save her village from the deadly Pelage virus. After her tragic death, Deku, the God of Darkness, reborns her as a boy named Nick using his shadow power. Deku, unlike other gods who abandoned their creations, takes responsibility for his actions and guides Nick on his journey. As Nick discovers his powers, past, and purpose, Deku's mentorship helps him navigate the complexities of his new existence. Together, they work to maintain the balance of life and prevent the forces of darkness from consuming the world. Deku's unwavering dedication to Nick and the world showcases his growth as a responsible God, willing to make amends for past mistakes.