Koichiro Uno's Wet and Riding (1982)

Name: Koichiro Uno's Wet and Riding
Genre: Comedy
Released: 1982-01-08
Duration: 67 min
Cast: Junko Asahina, Reiko Natsu, Maki Kawamura, Jun Miho, Koshiro Asami

Yoko is a housewife who's frustrated by her husband's lack of virility. She finds solace in erotic daydreams, the ministrations of a condom salesman and, eventually, the partner-swapping lifestyle.