a series of character singles from the first season of the anime was released by king records. the first set of singles, featuring moka akashiya (nana mizuki), kurumu kurono (misato fukuen) and yukari sendo (kimiko koyama), was released on february 14, 2008. the second set of singles, featuring mizore shirayuki (rie kugimiya) and ruby tojo (saeko chiba), was released on march 26, 2008, along with a compilation album called . an original soundtrack was released on december 25, 2008.