Dark(2000)

Shinji Yagami had always heard the rumors about female students being raped on campus - everyone did. Of course he never believed them until the day he stumbled across a website showing detailed pictures of female students being assaulted in the classrooms. Shocked to find himself turned on by what he sees, Shinji begins his descent into a world of voyeurism, S&M, and rape guided by fellow sadist Satoshi Kojima.