This was based on a Japanese film of the same name, which I've seen. Unfortunately, it had no subtitles, so I had no idea what it was about at the time...but now I REALLY want to see it again! That is one thing the Japanese do really well, is creepy horror. Think 'Silent Hill' (this could easily fit in with that whole story), or 'Uzumaki' ('Spirals')...lots of internal symbolism, very twisted...gotta love it. Easily the creepiest flick I've seen in a LONG time.
Damn, I am definitely owning this one...probably will get it the day it comes out.
GO SEE IT.