ZEAA-008 Director's Wife Secretly Approached While He Sleeps: Rio Kaneko

A man invited to the director's house threatens the director's wife, Rio, with an old AV she appeared in, and takes advantage of her while the director is asleep. He returns almost daily, restraining her with an M-shaped spreader, using a vibrator, a rotor, and an electric massage machine. Rio is forced into hard deep-throating and vaginal creampie sex. It turns out the director planned the whole thing, getting aroused by watching his wife degrade, but when he sees his subordinate playing with Rio one day, jealousy drives him to rush in.