 Xebec produced a thirteen episode anime adaptation directed by Tsuyoshi Nagasawa, unrelated to the OVAs.It first began airing on TV Tokyo between October 5, 2008 and December 28, 2008. an OVA version of the anime was released in 2009, directed by Tsuyoshi Nagasawa, featuring the same cast as the anime.Ever since their childhood, Ryōta Satō and Chika Koizumi have been close friends, going so far as to pinky swear to marry each other.