Kaoru remarried six months ago to a man with a child, and is now the mother of a teenage son, Atsushi. While Atsushi spends all his time holed up in his room playing games, Kaoru wants him to have a variety of experiences. One day, in the afternoon when her husband is not around, Kaoru asks Atsushi, "Atsushi, you're still a virgin, right?" Atsushi is surprised by Kaoru's sudden statement, but a few minutes later he successfully loses his virginity. It's an experience so pleasurable that it will make all men in the world envious...