BBAN-552 Ever since the day my beloved sister had her accident... The victim lesbian has a hold on her weakness, and she is played to serve him reluctantly and develop his sensitivity, becoming a lesbian slave instead. Nia Rukawa Rio

Rio, a nurse, works late at the hospital every day for her beloved younger sister, Minori. One day, Minori gets into a traffic accident. In a twist of fate, Rio ends up being the nurse in charge of Nia, the victim of the accident. "If I sue you, your sister's life will be ruined," she threatens, and Rio becomes obedient to the true lesbian. And her demands gradually become more and more...