Step by Yu Yanshu volume 2?

I own a manga where the full title is "Step Vi. Dynasty Tang" written by Yu Yanshu. I can't seem to find any existence of it except on amazon, Barnes and Nobles, and one anime site, but nobody has posted any information beyond a simple plot synopsis. The book is supposed to be volume 1, but I never saw a volume 2. Was it canceled? Discontinued? Dropped for something else? Does anyone have any idea what happened to it, because I'm curious to know if a second volume was ever created.