The anime in question I believe is called something to the effect of "Urotsukidoji: Legend of the Overfiend", and there are others in the Urotsukidoji series. Their basic themes are: Sex, violence, and violent sex. They're pretty out there, and it kind of takes a strong stomach to watch them, being high helps. I know Animenation or what not used to distribute them. They were kind of a mainstay on the Hentei scene a few years back.