This movie, based on Japanese urban legend about a female ghost whose jealous lover slit open the corners of her mouth, has also been made into a more mainstream, more straightforward horror movie called "Carved: The Slit Mouth Woman". I haven't actually seen the latter, but I'm sure it's better as far as a horror movie goes. But if you're a little bored with horror movies about vengeful long-haired girl ghosts, you might prefer this one because it's also a "pink" film (i.e. a Japanese softcore sex film) that manages to cram SIX long gratuitous sex scenes into it's 70 minute running time.
It starts with a horny doctor and nurse sneaking off to an abandoned wing of their hospital to take each other's temperatures the naughty way. The basic m.o. of the "slit-mouthed woman" is to kill one member of the couple while they're having sex, then to go after the other person the next time he or she has sex, then to go after his or her new partner, etc., etc. She's thus kind of a clever cross between a "grudge"-like ghost and a very fatal STD. (You might think, of course, that having your partner actually die during sex would you put you off having it at least for a little while, but then you've obviously never been in a Japanese "pink" film).
If you approach this purely as a horror film, you're probably going to be bored because there's just too much sex. If you approach it as a sex film though, you'll probably find yourself surprisingly entertained. Although they're speaking Japanese, the actors are still obviously far more talented than the plastic sex dolls that pass as American porn stars these days. (There's little or no silicone on display here either). And the director is much closer to the talent level of a good horror director than to the talentless hacks that make modern-day American sex films. You won't want to watch this (or most other "pink" films) if you just don't like softcore sex flicks in general. But if you do, you could do a lot worse than this one.
