Hakuōki (薄桜鬼 〜新選組奇譚〜 Hakuōki ~Shinsengumi Kitan~, Demon of the Fleeting Blossom: The Mysterious Tale of the Shinsengumi) is an otome video game series by Idea Factory, released for the PlayStation 2 and ported to PlayStation 3, PlayStation Portable, Nintendo DS, and Nintendo 3DS. It has been adapted into an anime series by Studio Deen; the first season began airing in Japan on the TV Kanagawa and UHF stations on April 4, 2010. The second season began airing on October 10, 2010 and ended on December 12, 2010. The series has been adapted as two different manga series. A third series based on the prequel, Hakuōki Reimeiroku aired in summer of 2012.