Kōji Wakamatsu
The major film studio, Shintōhō Eiga, entered the AV (adult video) market in 1992 with its "Hard Porno" series. This was a line of video-releases of older Kōji Wakamatsu-produced S&amp;M films. The series opened with the Shin'ya Yamamoto (director)-directed Naomi Tani film "Cruelty of the Female Inquisition" (1975). Wakamatsu's own "Torture Chronicles" were released to video in this series.