Dengeki Comic Gao!
"Dark Edge", written and illustrated by Yu Aikawa, was serialized in the publisher MediaWorks' magazine "Dengeki Comic Gao!" from June 27, 1998, to February 27, 2006. The series was collected into fifteen "tankōbon" published between March 15, 1999 and April 15, 2006. It was republished by Gentosha in a five-volume "bunkoban" edition between January 24, 2013 and July 24, 2013.