mother's friend

On his way to work, Shigeru accidentally guides a woman who got lost. When I got home after work, the woman I had given directions to was still at home for some reason... Then, my mother introduced me to her friend Sumika, saying, ``You said your friend was coming to stay.'' Shigeru Sumika, who has a beauty that belies his mother's classmate, feels his heart pounding... Shigeru, who is too excited to sleep, leaves the room and accidentally witnesses Sumika masturbating. Shigeru is excited by her obscene behavior and pushes her down...