At first, the serial work of the monthly magazine "Hot Blood of Youth" began in June 2006, and it was transferred to Yahoo in June 2007 with the closure of the magazine! "『FlexComix Blood" serialized in online comics. On July 8, 2009 (the update date of 3 1), the news of animation was released. In addition, in order to commemorate the opening of the theatrical version of animation, the novel "The Sword with a Broken Blade-Tripping of the Pale Moon" was serialized on the "Gagraphic" website on April 6, 20 10.