Naruto is one of the best-selling manga series of all time, having 250 million copies in circulation worldwide in 47 countries and regions, with 153 million copies in Japan alone and remaining 97 million copies elsewhere. It has become one of Viz Media's best-selling manga series; their English translations of the volumes have appeared on USA Today and The New York Times bestseller list several times, and the seventh volume won a Quill Award in 2006. Reviewers praised the manga's character development, storylines, and action sequences, though some felt the latter slowed the story down. Critics noted that the manga, which has a coming-of-age theme, makes use of cultural references from Japanese mythology and Confucianism.