The story follows the adventures of Monkey D. Luffy, a boy whose body gained the properties of rubber after unintentionally eating a Devil Fruit. With his pirate crew, the Straw Hat Pirates, Luffy explores the Grand Line in search of the deceased King of the Pirates Gol D. Roger's ultimate treasure known as the "One Piece" in order to become the next King of the Pirates. Toei Animation produces an anime television series based on the One Piece manga. The series, which premiered in Japan on Fuji Television on October 20, 1999, has aired more than 1,000 episodes, and has been exported to various countries around the world. Two cross-over episodes with the anime adaptation of Toriko were aired. The first of these, which was also the first episode of Toriko, aired on April 3, 2011. A second special, which also crossed over with Dragon Ball Z, aired on April 7, 2013.