Saori was living alone for gravure work, but she quit her job and returned to the countryside. After returning to her parents' house, she meets her younger brother Taichi for the first time in a while. With the intention of teasing such a naive Taichi, Saori shows her cleavage and seduces him, but Taichi, who has been in heat more than she expected, pushes him down. From that day on, Taichi's unmatched cock, which turned into a sex beast, was fucked at home with no escape.
