Oniroku Dan: Bikyoshi jigokuzeme

This sadomasochistic pinku-eiga from the genre specialists at Nikkatsu was written by controversial author Oniroku Dan, whose inclusion in the title gives some hint of his brand-name status among torture buffs. Ran Masaki stars as a busty teacher who is transferred to a remote mountain school where she is gang-raped and abused by the male students. (All Movie Guide)