Tsubasa comes to visit her friend (Takao) in the neighborhood... Mitsuyo is excited to see her son's friend, who has come to visit for the first time in a while, and how he has grown into a manly, muscular man. Mitsuyo pushes her son to do some errands, and when she is alone with Tsubasa, she shows off her erotically sour body and takes her son's friend's erect penis in her mouth... Mitsuyo Morikubo, a 55-year-old erotically slutty fifty-year-old woman in the neighborhood, Mitsuyo Morikubo her son's friend by telling him he can do whatever he wants with her erotically slutty body in exchange for keeping it a secret from her son, and devours her young body.