I've seen it!
It is a confusing movie if you are not paying close attention to what's going on, but I found it to be really entertaining and quite different from most of the other Japanese horror films I've seen. It is a bit on the cheesy side and the acting isn't always the greatest but if you can forgive all of that you'll have fun with it. And yes... there were some genuinely unsettling moments here and there... Definitely worth renting if you enjoy east asian horror and want to see something new.
~ Kryzula