I don't rember the exact name of the books but Ouka's from a set of three books in the .hack series and I love her. The books had Shugo and Rena in it and Shugo had some special bracelet or something like that. *shrugs* It was the first manga I ever read in my life so I don't remember that well. If you know what I'm talking about feel free to tell me the name of the books! But anyways, I loved Ouka and drew her alot when I first read the books and this is the best of all of them. I think it turned out great! lol