Toriyama's first foray into the manga industry came when he entered a competition for up-and-coming writers in the Weekly Shonen Jump comic magazine. While his submissions did not win, they attracted the attention of Kazuhiko Torishima, who worked at the manga giant, and would later become Toriyama's editor, according to IT media. This led to Toriyama's debut in 1978 with "Wonder Island." Following his debut, he produced many popular works, such as "Dr. Slump" and "Dragon Ball" for Weekly Shonen Jump. In particular, "Dragon Ball," which began serialization in 1984, became an international phenomenon and one of the best-selling and highest-grossing manga series of all time, with over 260 million copies sold worldwide in over 20 countries. The anime adaptations of "Dragon Ball," including "Dragon Ball Z" and "Dragon Ball Super," became wildly popular overseas and have been broadcast in over 40 countries.