Cruelty Black Rose Torture , Zankoku kurobara lynch? aka Black Rose Slave is a 1975 Japanese film in Nikkatsus Roman porno series, directed by Katsuhiko Fujii and starring Naomi Tani.
Since first entering the softcore pornographic genre in 1971, Nikkatsu had been courting the Queen of pink film, Naomi Tani to work for them. Because Nikkatsu was reluctant to work in the SM genre, Tanis specialty, and Tani preferred to have starring roles in independent productions rather than supporting roles at Nikkatsu, she refused. When the studio agreed to film Tanis SM projects Flower and Snake and Wife to be Sacrificed both 1974 and both became major hits, Nikkatsu officially entered the genre, with Tani as their SM Queen. With Cruelty Black Rose, the studio created the Black Rose nickname for Tani, which they would continue to use in film titles starring Tani which otherwise had no connection. Some such titles include Black Rose Ascension 1975, Lady Black Rose 1978.After Naomi Tani and Terumi Azuma had first worked together in Masaru Konumas Wife to be Sacrificed 1974, Nikkatsu teamed the two women in several more projects, in which Azuma served in a supporting role to Tani. After Wife to be Sacrificed, Cruelty Black Rose Torture was the second of these pairings. They were popular together, though they became rivals both on and offscreen. After Azuma began having starring roles of her own in 1976, she stopped appearing with Naomi Tani. The two were linked again in romantic scandal when Tanis managerboyfriend left her for Azuma in 1977. ........
Source: Wikipedia