藤島康介
Two strategy guides under the V Jump Books brand were published by Shueisha: the Gamecube guide was released on August 29, 2003 and the PS2 on September 22, 2004. Namco Bandai Games released two official strategy guides on October 1, 2003 and October 27, 2004 for the Gamecube and PS2 respectively. is a book by the game's designer, Kōsuke Fujishima, and was released on January 26, 2004 by Ichijinsha. It provides details on the characters' back story and how their design came to be. was released on June 26, 2008 by Namco Bandai. The book details the history of the world and characters. is an art book for the anime released on March 28, 2013 by ASCII Media Works.