Majime is a young man living with his adoptive mother Misako, who took him in after his biological parents died. Despite Misako’s devoted care and hard work as an academy instructor, Majime harbors inappropriate sexual feelings for her. After learning from his aunt Reika that his adoptive father is having an affair, Majime’s suppressed desires escalate and he sexually assaults Misako while she’s asleep. Despite Misako’s protests that they are mother and son and her desperate pleas for him to stop, Majime forces himself on her repeatedly, declaring his intention to “make her into a woman” regardless of their family relationship.