Mrs. Muremure(1978)

The wife of a company president is 29 years old and in the prime of her life. Her husband is a powerful man in the financial world, so they are much older than her. As a result, she is always sexually unsatisfied and has affairs with one man after another, first a middle-aged man, then her golf coach, a host, and a sumo wrestler. This film is a film adaptation of Koichiro Uno 's bestselling novel, "A Busy Wife."