Sola was the first anime written by Hisaya Naoki after leaving game publisher Key.
Sola is a Japanese work originally conceived by Naoki Hisaya (main writer of Kanon) with original character design by Naru Nanao (designer of D.C.: Da Capo). It was first unveiled through the prologue of the manga featured in the Japanese manga magazine Dengeki Daioh on December 21, 2006, published by MediaWorks. The manga, which is illustrated by Chako Abeno, ended serialization on February 21, 2008.