Entrails of a Virgin (処女のはらわた, Shojo no harawata) is a 1986 horror film in the "splatter-eros" subgenre of pink film.
A group of photographers and their models go to a forest retreat. They engage in S&M; play and lots of softcore sex. Eventually they get picked off one-by-one by a filth-covered 'demon' with an unnaturally large penis. Most of the sex scenes are fogged.
In his Asia Shock; Horror and Dark Cinema from Japan, Korea, Hong Kong, and Thailand, Patrick Galloway says that Komizu's mix of sex and horror works as a film. He describes the film as "essentially one long fuck-fest interspersed with the occasional impaling, hanging or beheading..." and concludes, "It's all rather sordid and there's a definite misanthropy to the film reminiscent of Henri-Georges Clouzot (Diabolique), but somehow the elements click into place, making for an uncomfortable-yet-can't-look-away film experience."
Along with its sequel, Entrails of a Beautiful Woman, Entrails of a Virgin became a notorious...