Summary
Yaiba resides in the forest with his father, Kenjurou. During a meal, they are ambushed by a troop of gorillas. The pair escapes by hiding inside a crate, unaware that it is packed with pineapples and destined for transport to the city. Once in the city, Yaiba discovers his heritage as a legendary warrior and learns he must battle the evil Takeshi Onimaru, a demonic-looking high school student.
