Married for three years to Shu, who works at a securities company in Tokyo. Shu suddenly announced that he wanted to become a day trader and quickly changed jobs. For the reason that the countryside is quieter and easier to gather information, Shu's wife, Shinako, ended up living in Shu's hometown. There, she met her brother-in-law, Kyosuke, for the first time. Kyosuke had a rugged and muscular body beyond what Shu could imagine. Shinako couldn't get Kyosuke out of her head. Meanwhile, Kyosuke was captivated by Shinako's large breasts, which seemed out of place in the rural setting…
