This is an interesting psychological suspense film which is very much in the tradition of other Japanese films like Cure (Kyua, 1997) and Angel Dust (Enjeru Dasuto, 1994).
*** Minor, first-act SPOILERS follow ***
The movie proceeds along two main narrative lines. In one, the police hunt for the "man behind the scissors," a serial killer who kills his victim with scissors and has apparently killed three victims. In the other, we follow this killer and his female companion as they also try to solve a murder. This sort of dual cat-and-mouse game makes for an interesting variation on the usual police procedural.
*** End spoilers ***
Overall, The Man Behind the Scissors (that's the English title on the DVD I rented) is a good effort and offers a good deal more depth than the average slasher film. It's hampered by a somewhat disappointing last act, though.
Unfortunately, the film has a few too many subplots, and by the end of the movie things begin to drag and the film loses a lot of its focus. There are a lot of twists in the movie, and it could have done with a lot fewer. In addition to this, not all of the narrative threads are equally compelling (in particular, the part of the story concerning the police doesn't have nearly the same level of psychological zing as the other part).
Despite the lackluster ending, though, it's smarter than average, and worth a watch if you enjoy thrillers of this type.