Skin of Roses (1978)

Naomi Tani plays Ritsuko , a popular madame of a nightclub. But, ever since her gangster husband got caught and imprisoned, her life has taken a turn for the worst. Now, in order to pay off his debts to a yakuza loan shark, Lady Ritsuko is forced to engage in private sex shows for the VIP clientele. After a year of these special shows, the loan is almost paid off.