In a desperate attempt to find a successor to vanquish the evil Atsunmo, the divine being Myu flees, stumbling upon a high school student, Kayo Majiba, who seems the perfect fit with her pretty appearance. Yet, to Myu's surprise, Kayo's tough exterior conceals a delinquent nature, revealed by her unanticipated cigarette habit. Despite her rough edges, Kayo swiftly defeats Atsunmo with a single punch, posing a new challenge for Myu. Now tasked with guiding Kayo on the path of righteousness, Myu grapples with unraveling the complexities of Kayo's character beyond her brash façade.