Mizue Tani wrote the light novel series Hakushaku to Ysei, which was published in Japan by Shueisha. Asako Takaboshi illustrated the story for Cobalt magazine. Shueisha has commercially released two drama CDs, and a manga adaptation has begun serialization in The Margaret since the September issue of 2008. From September to December of 2008, an anime adaptation aired. On April 30, 2009, a PlayStation 2 visual novel was released.