Akari who works as a president's secretary.One day, her younger brother Shinji intervenes with a yakuza woman, and Shinji and Akari are kidnapped.Shuri was framed by the yakuza for what her brother had done.She continues to receive sexual acts over and over again, and Akari degenerates into a sex slave.Shinji, who saw her sister like that, was excited by her real sister, and she decided to enter the gang and participate in her act.Betrayed even by her younger brother, Akari loses her will to live...