Sayuri, who is in her fifties, lives with her son. She is a lewd mother to the extent that she makes her son an "outlet" for her sexual desires. One day, her younger brother, who is in charge of her company, comes to visit. She used to be in a relationship with her younger brother and a rich SEX that flares up again. Intense SEX with her son who came home. A plump and ripe body fifty mother suddenly changes into a woman.
