I bought Tomie: Unlimited without seeing any other Tomie movies, and I also have not read the manga either.
It was overall a disappointment, although at some part it was very well done. The biggest let down of the movie was because it seemed as though they did not know where they were going to take it, and the vast majority of the film is made up of ridiculous scenes.
The atmosphere of the movie is very well done though, and it deserves credit for making the scenes very lonely and solitude which reflects Tsukiko's life. The actors did very well too, especially in making everything eerie and Tomie was the best at doing that.
By the end of the film I had no idea what was going on. I hope someone one day explains the plot of the movie to me, because I honestly have no idea.
I have rated it 3 stars as many of the scenes were laughable and I do not understand what the whole movie was about; however, it did make for some good watching, very good acting, and was a bit creepy. If, however, you are wanting a very frightening horror..I definitely would not recommend this.