My father's new wife is Ayumi, the nurse I admired during my hospitalization. (Jealousy, erection, intercourse, Ayumi Natsukawa, VEMA-215)

Why did this happen...? His father's new wife is a nurse named Ayumi. During his hospitalization, Atsushi was cared for by his first love. Ayumi also helped him through the hardships of hospital life. And now, Ayumi 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 Ayumi, who has become his new mother.