A certain story of a brother-in-law and a brother-in-law. At her brother-in-law Tatsuo's house, she lives with her sister-in-law Ryoko Murakami. One day, Yasuhiro began to avoid night activities, so he couldn't stand the sexless situation and repeatedly masturbated became a daily routine. One day, Tatsuo, who came back to Japan a day early, happened to see her secretly masturbating in front of the entrance. Witnessing his brother's frustrated daughter-in-law, Tatsuo held his erect crotch and set his sexual sights on Leon, who had been secretly aiming in his heart for a long time.
