Yaiba Kurogane

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 didn039t 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 highschool student named Takeshi Onimaru. Source: Wikipedia