After being defeated in another world, the dreaded Crimson God of Destruction is reborn in Japan as the young Tatsuki Sanada. He finally enjoys a peaceful existence… until a beautiful visitor from another world, Hikari Kozuka, appears to claim his soul. Guided by the enigmatic Elle, Tatsuki must confront unknown enemies and the past he thought he had buried, igniting a war that will test his desire to live as an ordinary student.