Original Sin (1992 film)
Original Sin , Shinde mo ii? is a 1992 film directed by Japanese director Takashi Ishii. Based on a novel by Bo Nishimura, the film is about an extramarital affair between the wife of an estate agent and a 22yearold man.
Later, Nagase rapes Nami at a house that is on the estate agents books. However, they soon move upstairs to the bedroom and make consensual love. The affair continues, with Nagase telling her it was love at first sight.At a hotel on a company trip, Hideki catches the couple together in the bath and finds out about their affair. He sacks Nagase. However, Nami later tracks him down and they spend a night together in a hotel where Nagase decides to murder Hideki. ........
Source: Wikipedia