The ishoku document: Uma to onna Film 1986 on netflix

A young woman who came to Tokyo from a remote village is tricked by the Yakuza and goes through a series of jobs, from hostess to soapland girl to hot spring geisha to stripper, and finally makes a living as a stripper, but gradually loses popularity to a young dancer. For the performance of her life, she visits a gynecologist to have her vagina expanded, and performs with a horse on stage…