Lillia and Treize began as a series of light novels written by Keiichi Sigsawa and drawn by Kouhaku Kuroboshi. The novels are published by MediaWorks under their Dengeki Bunko publishing label.
Lillia and Treize started as a series of novels penned by Keiichi Sigsawa and illustrated by Kouhaku Kuroboshi, which fall under the umbrella of light novels published by MediaWorks' Dengeki Bunko label.