Ueto, who works at a small obstetrics and gynecology hospital somewhere in Tokyo, is a beautiful nurse who is serious about her work, attentive to details, and has a gentle smile that is trusted by both users and colleagues. However, she had a secret that even her closest colleagues did not know. - It is a bad habit to seduce husbands who visit the hospital by hiding in their heavy wives. Men who were denied sex by their wives and were overwhelmed with sexual desire and stress were in the sperm collection room, in the hospital room, right next to the delivery room during childbirth ... He betrays his wife, who is fighting the pains of childbirth, and easily falls into Ueto's temptation. Ueto smiles gently while looking at the face of a man who is leaving himself to pleasure and ending up with goofiness. "When I see a happy couple, I want to be mean..." - Includes 4 in-hospital infidelities of scum husbands entangled with evil nurses.