 Three drama CDs were released by Key Sounds Label based on the short stories in the light novel. The first, A Snow Globe, was released on December 29, 2006 at Comiket 71 bearing the catalog number KSLA-0027; it was later re-released on May 25, 2007 with a different cover. The opening track takes place one year before the protagonist arrives at the planetarium and the "Snow Globe" story is told as a flashback. The end of the drama CD is where the kinetic novel begins. The second drama CD, Jerusalem, was released on July 27, 2007 bearing the catalog number KSLA-0029. The insert song "Brave New World" by fripSide is included at the end of the drama CD. The final drama CD, Hoshi no Hito, was released on July 27, 2007 bearing the catalog numbers KSLA-0030 – 0031. This drama CD covers both the "Hoshi no Hito" and "Tircis and Aminte" stories. A cast of voice actors perform the characters in "Hoshi no Hito", but "Tircis and Aminte" is a recited story by Keiko Suzuki, the voice of Yumemi Hoshino.
