User blog comment:Godisme/The Edge/@comment-2220308-20130131185147/@comment-1393830-20130131204630

It is not a fan fic per se. It is a novel written by Rhyuga Narita, a Japanese novelist. It is an officially published novel published by the publishers of Bleach. It is not written by Kubo, but it was officially commissioned. That said, it, like all the novels that came before it, is not canon.