Unwilling to move to a different shrine and leave her friends behind, Kanna escapes in the dead of night with her loyal bodyguard Ryuuya and confidant Uraha. Knowing their pursuers are not far behind, the three embark on a journey to locate Kanna's mother, who Kanna yearns to see after many years of separation. Amid the tensions, the trio explores the world outside the confines of the palace—serving as a tranquil yet temporary distraction from what is to come. [Written by MAL Rewrite]

Air in Summer was released on DVD by Pony Canyon in Japan on October 5, 2005. The company later released a Blu-ray disc box that bundled the special episodes on December 22, 2006. ADV Films published the special episodes on DVD in North America on November 27, 2007. Funimation included Air in Summer in the Air Complete Series DVD collection, which was released on April 21, 2009.