School of Darkness / Injuu Onna Kyoushi

Hentai was filmed in distant 1995 by studio PinkPineapple. The story revolves around an incredibly perverted physical education teacher. He often rapes the biology teacher... Yes, it has become a habit for him. Later, our hero becomes interested in an unusual ancient fossil, which turns out to be an artifact that awakens lust and releases ancient evil. The educational institution is mired in lust and every day strange and mysterious events happen...