Mr. and Mrs. Sasagawa, who have been married to a kind and serious husband for 15 years, are living an ordinary but happy married life, and are not blessed with a wife, Yokoko, who loves Yuta, the son of a single-parent family who lives next door, like a child. . One day, Yoko heard a conversation between her husband and Yuta in the bathroom, where they were getting along like a parent and child, and Yoko swallowed hard. ``Yuta's dick has become so nice! Isn't it 17 centimeters!?'' Yoko, who hasn't had sex for three years, can't ignore this conversation... rnrn