http://ebook.itmedia.co.jp/ebook/articles/1206/01/news033.html
http://comic-meteor.jp/seikaino/
http://flex-comix.jp/titles/seikaino/
As it turned out a (hidden) free magazine was provided, too. *shoot me*
http://blog.nicovideo.jp/niconews/ni035045.html
Now, volume 1 of the manga will be on sale on May 11, 2013.
http://www.amazon.co.jp/gp/product/4593857325/