Three years have passed since I married my husband Shu, who works for a securities company in Tokyo. Mako, a wife who suddenly said that she would become a day trader, moved to work early and lived in her hometown because the countryside was quieter and easier to collect information. There, he met his brother-in-law Keisuke for the first time. Kyosuke had an unimaginably stern and ugly body from Shu. Mako never lost her head at Kyosuke's appearance. On the other hand, Keisuke was also deprived of his heart by Mako's big breast which is not compatible with rural areas.