Yuriko who has witnessed her son's masturbation.Yuriko, who can't get her grown son's cock out of her head, starts masturbating in her bedroom.A son who feels uncomfortable with the noise in her bedroom and quietly peers into the room.Her son also witnesses her mother masturbate. Her mother who accepted her son, who said she couldn't take it anymore, "just for once."Her son, who couldn't fit in just once, pestered her for an anal fuck, saying, "It's good here, isn't it?", and her mother also accepted her son.