Quest of the Sex: Rumble in the Women's Empire (2003)

Hong, as a tutor, always has unbalanced of sexual fantasy. One day, he couldn't control himself and raped his student during the session. He kept going. However, the student's sister, Madam Wong, was a cop, and the rapist was brought to justice. But when he is certified as a mental patient, he is released from custody and the women are once again in danger.