Adultery (Korean: 간통) is a 1989 South Korean erotic drama film.
Na young is raped on vacation while her husband Myung ho is on a business trip. Sanghyun raped Na young in a spirit of vengeance for his old girl that resembles Na young, yet Na young soon becomes obsessed and begins having an affair with her rapist Sang hyun. Meanwhile, Myung ho has an affair with his daughter's piano teacher and she becomes pregnant. Na young learns about this affair and tries to divorce Myung ho out of guilt, but after Myung ho apologized and her daughter Chorong appealed to her in tears, the two reconcile.[2][3][4]
From movie ending credits:[1]