"here, eat up, hehehe..." touko, who had been working as a part-time store manager, remarried with koji. when touko first met koji's son, hanzo, she was shocked. hanzo was a handsome and muscular "stud," unlike his father. although touko loved koji, his age and lack of stamina left her unsatisfied. unable to resist, touko ordered aphrodisiacs online. one day, after continuously feeding hanzo the aphrodisiacs, he finally transformed into a monster beyond human comprehension.