Nurse Rio works late every day at the hospital for her beloved sister Minori. One day, her sister Minori gets into a traffic accident. Furthermore, as a cruel twist of fate, Rio ends up being the nurse in charge of Nia, the victim of the accident. Threatened with 'If I tell, your little sister's life will be ruined,' Rion becomes a true lesbian. Then, the demands escalate... Goodbye, happy days with my little sister. A white-clad angel offers her body, orgasming repeatedly, falling into a hell of devoted service as an obedient lesbian slave.
