The woman my father brought along for his remarriage was Aya, the nurse I admired during my hospitalization. (Jealousy, erection, intercourse, Aya, Natsuyagi, VEMA-212)

Why did this happen...? His father's new wife is a nurse named Ayatsuki. During his hospitalization, Atsushi was cared for by his first love. Ayatsuki helped him through the tough hospital life. And now, Ayatsuki has become a new member of his father's family. His beloved has been taken away by his father. As a man, Atsushi decides to cross the line with Ayatsuki, who has become his new mother.