Original Sin 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. The main cast members are Shinobu Otake (Nami Tsuchiya, the wife), Masatoshi Nagase (Makoto Hirano, the young man) and Hideo Murota (Hideki Tsuchiya, the husband). imdb.com