Lillia and Treize (リリアとトレイズ Riria to Toreizu) is a Japanese light novel adventure series by Keiichi Sigsawa, with illustrations by Kohaku Kuroboshi, starring the children of the characters from Allison. There are six light novels in the series, published by MediaWorks under their Dengeki Bunko label. The first novel was released on March 10, 2005, and the last novel was published on April 10, 2007; there are three stories in the six volumes, with each story taking up two volumes. The series will be followed by Meg and Seron. A manga adaptation by Hiroki Haruse started serialization in the shōjo manga magazine Comic Sylph on December 9, 2006, also published by MediaWorks. An anime adaptation aired between April and October 2008 based on both the Allison and Lillia and Treize novels, known a