Yaiba, also known as Legend of the Swordmaster Yaiba (剣勇伝説YAIBA Ken'yū Densetsu Yaiba?), is a shōnen manga series by Gosho Aoyama (the mangaka of the never-ending Detective Conan/ Case Closed). The light-hearted manga is about an adventuring samurai named Yaiba Kurogane (鉄 刃 Kurogane Yaiba?) who knows how to be a samurai, and little else. Yaiba lives with his father, Kenjurou, in the forest. One day, while Yaiba was eating, a troop of gorillas came to attack. Yaiba and his father escaped and hid inside a box, but they didn't know that the box was full of pineapples and was going to be transported into the city. In the city, Yaiba finds out that he is a legendary warrior and has to fight the evil of a demonic looking high-school student named Takeshi Onimaru.