Re: Well, according to wiki...
I knew about the original manga (which is how I got wind of it) and the game was announced is said manga as well (Japan keeps ALL the good stuff to themselves *pouts*).
It's interesting that it's only 13 episodes - I recall 13 or 14 graphic novels, and the guys in the anime biz usually like to stretch things out between episodes seen in the graphic novel (Just look at Fullmetal Alchemist and Hellsing). I wonder A) if the episodes are on retail somewhere, and B) what Kumakura is up to nowadays.