Kōji Wakamatsu
One of the directors working with Shintōhō during this period was Kōji Wakamatsu who made a number of S&amp;M themed pink films for the studio including the 1975 "Pornographic Casebook: Sexual Darkness" and the 1976 "Women Cruelty Dark Chronicles". Two other torture-filled works from Wakamatsu from this time are "Torture Chronicles: 100 Years" (1975) and its 1977 sequel "Torture Chronicles Continues: 100 Years".