Her husband is Yumi who lives alone with her husband's stepchild Yoshio. I can't help but be conscious of Yoshio, who has recently grown into a manly man. When he is troubled by such thoughts, one day he learns that Yoshio also has the same thoughts. Yoshio also secretly sought his mother-in-law, Yumi, and was indulging in forbidden delusions. The two people's attracted hearts finally scatter sparks and eventually burn up. "Keep it a secret from your husband."
