Original Sin (死んでもいい, 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 22-year-old man.
At a hotel on a company trip, Hideki catches the couple together in the bath and finds out about their affair.
Hideki catches Nami and Nagase together again, but finds himself unable to divorce his wife, instead wanting to make a fresh start to their marriage.
After a protracted fight, Hideki is finally killed, and Nagase hits Nami so that the police will believe that the incident was a robbery gone wrong.