Thanks Sonhex for the site of the illustrator ^^
I added these to the first post of the thread:
Author: Narita Ryohgo (成田良悟)
Illustrator: Enami Katsumi (エナミカツミ)
Not only an anime, but also a manga based on the light novel is also starting soon
A manga based on the light novel is starting in February 2007 issue of the shounen(boy's) manga magazine
Dengeki Comic Gao!.
(I'm not so interested in adding the covers to the first post, unless someone asks for them :P ).