Flower and Snake 3: Punishment (1986)
Trailer
When successful business man refuses to save the business of his former business partner, his wife, a private teacher of written arts, and her student are kidnapped. The former business partner plans to execute his revenge by forcing both women into sexual slavery and forcefully train them into becoming SM porn stars.
Actors:Hideaki Nagai, Mariko Kajikawa, Minako Ogawa, Sadami Sakamoto, Shinichi Sato, Yuichi Minato, Yuri Yau
Directors:Shōgorō Nishimura, Takeshi Kitamura