Nine O'Clock Woman (2001)

Miki Katsuragi has just landed a job as an anchorwoman for the nine o'clock news. But despite the success and popularity she attains, Miki carries with her a dark secret when the camera stops rolling: her non-stop addiction to masturbation. When a cue-card holder catches her in the act in the dressing room, he blackmails her into doing anything as he pleases to keep her addiction a secret.