Complex sentence: The first volume was released by Fujimi Shobo on July 19,2008, and sold four volumes until January 20,2010 under their "Fujimi Fantasia Bunko" imprint.
Split into simpler sentences: The first volume was released on July 19,2008. As of January 20,2010, four volumes have been published by Fujimi Shobo under their "Fujimi Fantasia Bunko" imprint.