that the popular shōnen manga of the late 1980s and early 1990s had "manly" heroes, such as City Hunter and Fist of the North Star, whereas Dragon Ball starred the cartoonish and small Goku, thus starting a trend that Thompson says continues to this day. Toriyama himself said he went against the normal convention that the strongest characters should be the largest in terms of physical size, designing many of the series' most powerful characters with small statures. Thompson concluded his analysis by saying that only Akira Toriyama drew like this at the time and that Dragon Ball is "an action manga drawn by a gag manga artist." However, James S. Yadao, author of The Rough Guide to Manga, points out that an art shift does occur in the series, as the characters gradually "lose the rounded, innocent look that [Toriyama] established in Dr. Slump and gain sharper angles that leap off the page with their energy and intensity." Legacy and accolades Thompson stated in 2011 that "Dragon Ball is by far the most influential shonen manga of the last 30 years, and today, almost every Shōnen Jump artist lists it as one of their favorites and lifts from it in various ways." David Brothers of ComicsAlliance wrote that: "Like Osamu Tezuka and Jack Kirby before him, Toriyama created a story with his own two hands that seeped deep into the hearts of his readers, creating a love for both the cast and the medium at the same time." In a rare 2013 interview, commenting on Dragon Balls global success, Toriyama admitted, "Frankly, I don't quite understand why it happened. While the manga was being serialized, the only thing I wanted as I kept drawing was to make Japanese boys happy." He had previously stated in 2010, "The truth is, I didn't like being a manga artist very much. It wasn't until relatively recently that I realized it's a wonderful job." Many artists have named Toriyama and Dragon Ball as influences, including One Piece author Eiichiro Oda, Naruto creator Masashi Kishimoto, Fairy Tail and Rave author Hiro Mashima, Boruto: Naruto Next Generations illustrator Mikio Ikemoto, Venus Versus Virus author Atsushi Suzumi, Bleach creator Tite Kubo, Black Cat author Kentaro Yabuki, and Mr. Fullswing author Shinya Suzuki. German comic book artist Hans Steinbach was strongly influenced by Toriyama, and Thai cartoonist Wisut Ponnimit cited Toriyama as one of his favorite cartoonists.