Nurse Discipline (1997)

Yumi, is a freelance nurse working a temporary contract to help a local doctor. Filled with hope, she visits the doctor, but what she sees there is the gruesome sight of the previous nurse, Kaori, drugged and abused by the doctor every night! "Could it be me next?!" Yumi hides in a hospital room late at night to catch the perpetrators in the act. But the one who appears is Mamoru, the man she abandoned years ago. "You said pretty things about becoming a nurse, but I'll show you just how slutty you are..." As the needle plunges into Yumi's arm as she desperately resists, the angel in white falls to the depths of a lustful beast..