冨樫義博
Four guidebooks titled "First Official Data Book" through "Fourth Official Data Book" have been released; the first two cover Part I of the manga, and were released in 2002 and 2005; the third and fourth volumes appeared in 2008 and 2014. These books contain character profiles, Jutsu guides, and drafts by Kishimoto. For the anime, a series of guidebooks called "Naruto Anime Profiles" was released. These books contain information about the production of the anime episodes and explanations of the characters' designs. A manga fan book titled "Secret: Writings from the Warriors Official Fanbook" appeared in 2002, and another fan book was released to commemorate the series' 10th anniversary, including illustrations of Naruto Uzumaki by other manga artists, a novel, Kishimoto's one-shot titled "Karakuri," and an interview between Kishimoto and Yoshihiro Togashi.