I watched Ringu only a few days ago and pretty much got it. With this the result was different. Mai has such a small role in the original that I almost had no idea who she was. Also, I found that this film expected you to understand stuff without even mentioning it at all, such as the fact that Sadako had manifested herself in Yoichi - it was assumed that we got it. I did get it, of course, but a hint of explanation would have been nice.
As with my previous review of the original, I can honestly say that I didn't find this instalment particularly scary. More like an over-complicated episode of The X Files. That's another trait of Japanese cinema that gets me sometimes - a film would seem OK to start, fairly straightforward, easy to get, but towards the end of the movie it gets unnecessarily complicated. Luckily there wasn't too much of that here, but there was still a bit of it. If I were to continue that rant a little,I would voice my annoyance at the barrage of unfinished important sentences that characters tend to speak. OK, so maybe we should be able to finish them ourselves, but sometimes it's just too obscure. For example, sentences along the lines of "That mean's he's...", or "Could he be...". No conclusion to the sentence. Nothing. Grrr! Anyway, rant over, overall I thought this was watchable, though not as good or coherent as the original. Despite the ranting, I still love Japanese cinema (what little experience I have of it).
I'm away to watch Ringu 0. Let's see how well it does.