The insane gynecologist, Dr. Marukido Sadao (Marquis de Sade), theorizes that a woman is unable to become pregnant if she is writhing in intense pain during intercourse. He sets about testing this new method of birth control by torturing women during sex.
| Actor | Role |
|---|---|
 Mikio TerashimaDr. Sadao Marukido | Dr. Sadao Marukido |
| KKozue KatoriMitsuko Marukido | Mitsuko Marukido |
| KKuniko MasudaNot listed | Not listed |
| HHachirô TobitaNot listed | Not listed |
 Atsushi YamatoyaNishimura | Nishimura |
 Hatsuo YamayaSaburō Kyōtani | Saburō Kyōtani |
 Kōji WakamatsuWeekly magazine photographer | Weekly magazine photographer |
 Shigechika SatōBlue film actor | Blue film actor |