Complex sentence: The twenty-nine chapters were compiled into seven "tankōbon" volumes by Kodansha with the first volume released on February 1,2001 and the final volume released April 4,2003.
Split into simpler sentences: The twenty-nine chapters were then compiled into seven "tankōbon" volumes by Kodansha. The first volume was released on February 1,2001, with the final volume released April 4,2003.