Demon's Room

Yoshiko Sejima gets a call from a man claiming to be from her husband's company. He tells her that he will come to pick her up on behalf of her husband. It turns out that he's a kidnapper and takes Yoshiko to a hotel, and proceeds to rape her. This man Fuji Nakatogawa calls Yoshiko's husband but doesn't request a ransom. He's just bent on humiliating Yoshiko to submission to be his sex slave.