Which anime or game is this from?

http://i114.photobucket.com/albums/n245/beamay/eddiesekiguchi_banner.jpg

It's not from any anime or game. When I looked at the results of search, I think it's a Chinese light novel. Because the draw style is similar in all of them, I'll assume they are drawn by the same person.

The title of one of them is:

Sublime/Extraordinary Contract
By author: 晓春 (Xiaochun)
ISBN: 9789861968186

I think this is a series because another image in that banner is under the same title but has ISBN: 9789861968193
By 晓春, the same guy too.

The other guys in the banner.. I think are image slips in the book.

Hope that helps.

Wow. I have no idea how you got that information. :D Thank you!!
This made my search easier. I can't find any articles about it in english though.. too bad.
I really like the drawing style.