Couple (Secret) Sex Life: Wife is Melting (1997)

Sinopsis

Recently, Azumi was shocked to learn that her husband Norio goes to an adult entertainment industry. While they were having sex, Norio blurted out, "As usual, you're behind the scenes." At first, she suspected that Norio was cheating on her, but when she investigated, he confessed that he frequented the sex industry...