M. A. T.

There was a man who had been training in martial arts in the United States since he was five years old, and returned to Japan in order to defeat the strongest Yokozuna, Chiyo Ushio. Raiden-o is a brawling wrestler who explodes down the Hakusei Highway with brutal techniques that apply techniques from all kinds of martial arts! The Sumo Association respects tradition and tries to crush Raiden King, but Raiden King's long-awaited pear attack explodes! However, Yokozuna Chiyo no Ushio was defeated by Kihouou, a pedigree wrestler recommended by the Sumo Association, and announced his retirement.

After dictatorship and civil war the South Amercian country, Nascencio, has an ambitious project to make jungle into farming land, which is commissioned to the Japanese company Seshimo. The company's chief, Yuji Seshimo, gets kidnapped while on an inspection tour into the land. Kenichi, a New York noir-style private detective, goes to find his brother...