Shikigami no Shiro: Nanayozuki Gensoukyoku

Does anyone know what Shikigami no Shiro: Nanayozuki Gensoukyoku is?

You can find it for sale over at Play-Asia but there is no info on it.

Is it like Shikigami no Shiro 3? Is it a collection? And more importantly... does anyone know if it's any good?

It's definitely not Shiki 3. I think i remember reading something about Alfa developing an Shiki adventure game or dating sim or something (and since it's listed under adventure & rpg, that would make sense).

edit - ahh here's the homepage:

http://nanayoduki.com/

Guess there is SOME shooting involved.

and some info in english:

http://www.gamespot.com/ps2/action/shikigaminoshironanayozukigensoukyoku/news_6122641.html