The protagonist, Yaiba (Kurogane Yaiba), is a wild samurai boy who trains in the jungle with his father, Kenjuro! By chance, Yaiba returns to Japan, where he meets his rival Takeshi Onimaru, who has the same samurai spirit as Yaiba, in a new training ground.
 
Yaiba is living a life of serious competition, but when Onimaru obtains the “Legendary Demon Sword”, he is on a journey full of spectacle and great adventure...! 

(Source: Crunchyroll News)

The light-hearted manga is about an adventuring samurai named Yaiba Kurogane (&#37444; &#20995;, 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. 
Yaiba adapted as an anime series that ran over 50 episodes, and encompassed the adventures Yaiba had in the first few runs of the manga. The show begins with Yaiba training to become a samurai in the jungle with his father and his two animal friends, Kagetora and Shonosuke. At a pivotal point, Yaiba's father announces that he is ready to return to Japan, and instructs him to find his old friend and rival, who just happens to be Sayaka's father. 
The people that Yaiba meets along his journey to become a true samurai encourage him, train him, or inspire him to greatness, though at heart he is still a child, and his incredible skill with a sword is matched only by his kindness towards his friends. Though, he tends to leap before he looks, and his thick-headedness tends to turn potential allies into enemies, though his friends soon clobber him, and salvage the situation. This unlikely group embarks on a host of incredible adventures where they meet legendary figures from Japanese history, and finally overcome impossible odds, and put everything on the line, to save the entire planet from a threat not of this world. It's a story of love, friendship, hard work, and never giving up.

Kurogane Yaiba is a boy who doesn't want to become what any regular kid would: He wants to be a samurai. That's why he undergoes a hard training with his father, knowing only the forest as his world. Then, one day, he is sent to Japan, where he has to deal with a whole new civilized reality, meeting the Mine family, the evil Onimaru and even the legendary Musashi, having lots of dangerous adventures, becoming stronger everyday.
 
(Source: Anime News Network)

Kaito Kuroba, a normal teenage student whose father is often absent. When his father dies under mysterious circumstances, he is made aware of his father's secret identity; a famous international criminal known as International Criminal 1412: the Phantom Thief, and that he was murdered by a mysterious organization for refusing to aid them in retrieving the "Pandora Gem"; a mystical stone said to shed a "tear" during the passing of a particular comet (often called the 'Volley Comet'), the consumption of which bestows immortality. 
 
He vows to prevent the organization from gaining immortality, and assumes his father's identity as he begins his quest for the gem. His only clues as to the gem's location are that it glows red under the full moon and that it is a doublet: a gem hidden within a larger gem. Thus, it would have to be a relatively large one with a bizarre history, and always stored in a place that never receives moonlight. He thus researches and steals famous priceless gems with odd histories from incredibly well-defended areas, and always returns them after the very next full moon.

Conan borrows a large amount of manga from Mitsuhiko and crazy things begin to happen around Beika City. Things aren't always the way they appear to be. A family asks Kogoro to help them protect a special sword in their dojo since Kaitou KID has sent word he's going to steal it. However Kaitou KID will have to steal the sword while Conan and Yaiba are after him.
 
(Source: Anime News Network)

An unaired pilot episode of Kenyuu Densetsu YAIBA produced in 1991 for Sunday magazine, re-released in the 2004 DVD-BOX set.

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