Well, being just straight: The art is actually good for what this thing is aiming for...but... I don't know, it's just another reading of Sadako's lore, except pretty much every human being looks like a zombie (I understand Sadako, but danm, is really like, EVRYONE). In addition, it's so short, if I didn't knew what Sadako's deal was all about, this manga wouldn't make a lit bit of sense to me. So it's for her fans, right? Don't really know, didn't feel like reading the other Ring's mangas, following bits of the book, instead I don't know if this follows the books or the movies... It lookslike a prequel to some horror manga, still, the one-shot could, I don't know, Sadako actually haunting someone?
It's ugly, that isn't bad itself, but this is evrything that this one-shot is. It's short, you can read in like, 5 minutes or so (even less I bet).
Don't think is worth though.