The OVA was adapted into a drama CD by Pioneer LDC and a novel was written by Waku Ōba, illustrated by Makoto Shinkai and Kou Yaginuma, and published by Media Factory's imprint MF Bunko J. Makoto Shinkai adapted a manga from the OVA, illustrated by Mizu Sahara; Kodansha serialized it in its manga magazine, "Afternoon", from April 2004, and released the manga as a one-shot on February 23, 2005. The manga was licensed for a North American release by Tokyopop, which published it on August 1, 2006.