Necro time.
Well this manga is being released digitally now. Currently up on Digiket.com.
other sites like DSLite should follow in the near future. Digiket.com requires a postal code for registration so I currently am unable to buy it.
It looks like some of the book's contents were given a few changes. For more info on that, here is the pixiv link.
http://www.pixiv.net/member_illust.p...st_id=47798433