Nôpan no tsubomi: Nuretai no (2011)

Mika is a call girl in a black dress and a hat pulled down over her eyes. Detective Suwa captures on camera the moment she enters a love hotel with a customer. However, he is shocked when he sees Mika. She is the wife of his late best friend, Yoshiki. Though somewhat dazed, Suwa decides it is just work and calls Mika...