Lustful Secretary (2007)

Miyake’s father was tricked by Yanase and committed suicide 10 years ago. Miyake swears vengeance on the murderer when she grows up, and she works as a secretary in Yanase’s law firm and desperately waits for one chance. In order to collect the Yanase’s incriminating evidence from his assistant, Miyake even seduces him by offering sex. One day, Yanase’s daughter Yumi suddenly disappears. Miyake decides to grab this chance to revenge…