Summer Skies was scheduled to have a live action movie adaptation released on December 20, 2008, though it was originally scheduled for a summer 2008 premiere.
Based on a Japanese manga series written by Norie Yamada and illustrated by Kumichi Yoshizuki. It was serialized in Fujimi Shobo's Comic Dragon magazine from May 2002 to January 2003 and was later collected in two bound volumes.