Misato, a full-time housewife who manages the household, and her husband, Joji, who runs a company, were unable to have children, so they were thinking of handing over the company to Joji's younger brother, Atsushi. However, because their expectations were too high, they became strict with him, and Atsushi gradually became distant from work, causing strain in the relationship between the brothers. One day, while Misa was taking a shower, she was surprised to find Atsushi smelling her underwear in the dressing room... Popular Misa Yuki takes on her first anal work!