Tezuka's last manga, which was serializing just weeks before his death in 1989.

In the year 1982, the Edo Shoji Corporation is a large Japanese trading company that has created a new branch in the fictional country of Cannibalia (or Kanivaria depending on how you transcribe it). Executive Director Yabushita assigns Hitoshi Himoto to be the head of the new South American office, which is an exceptional promotion for Hitoshi. Having joined the work force after his days of being a sumo wrestler, Hitoshi finds himself rapidly climbing the corporate ladder.

However, not long after he is assigned to South America, Director Yabushita suddenly resigns from the company. Apparently he was involved in a scandalous affair with a woman, and forced to leave after news of the affair had leaked out. This severely affects Hitoshi as he is then demoted and transferred to a different location in South America.

Hitoshi finds himself assigned to the city of Esecarta in the Republic of Santalna: a South American country that is in a state of political turmoil. Each day, the government soldiers fight with a rebel group of guerillas in the city streets. However, while reading some information at the Japanese embassy, Hitoshi learns of a certain metal that is indispensable to the manufacturing of electronics. This rare metal is actually mined at Mt. Montetombo in the Fego Province of South America. However, the mountain serves as the stronghold for the rebel guerillas, led by the fearsome José García.

Can Hitoshi make a name for himself in a dangerous land, working together with the people that know him as the "Gringo"? Political and Corporate intrigue and drama are all around in Tezuka's last manga.

(From Wikipedia)