The Superhuman Stud
Roman Porno from 1972.
Cast: Kazuko Shirakawa, Keiko Aikawa, Hidemi Hara, Mikiko Sakai, Sayori Shima, Kyoichi Mizuki, Kunio Shimizu, Keisuke Yukioka, Yasushi Suzuki
Crew: Isao Hayashi (Director), Kazuo Nishida (Screenplay), Kazuhiko Hasegawa (Assistant Director), Koichi Sakata (Original Music Composer), Kuratarō Takamura (Director of Photography)