Shinnin jokyôshi: Bijutsu-shitsu no jôji (1996)

Name: Shinnin jokyôshi: Bijutsu-shitsu no jôji
Director: Hisaaki Nagaoka
Released: 1996
Cast: Yuuki Hata, Chihiro Yoshioka, 葵有稀, 竹内義人, Minako Ogawa

1h 10m IMDb

Tatsuya, a student of newly appointed teacher Yuko, has a girlfriend named Miki, but spends the night in Yuko's room. When Miki finds out, she records all of Yuko's lewd behavior on video camera and blackmails her, making Yuko her puppet. One night, Tatsuya is invited to an orgy party hosted by Miki...