Kota has been dating his girlfriend Yoshie for three years, but recently he has been having some troubles. He has grown tired of her and is starting to become interested in the beauty of her mother... Whether she knows how Kota feels or not, his mother suddenly confesses to him, "I've fallen in love with you, Kota." Kota is taken aback by this sudden confession, but even though he knows it would be a betrayal of Yoshie, he ends up sleeping with her mother...