Gringo

Gringo (グリンゴ, Guringo) is a manga series by Osamu Tezuka that began serialization in 1987 in the Shogakukan manga magazine Big Comic.

Plot
The story takes place in 1982, Hitoshi Himoto, the typical Japanese workaholic is sent to South America to manage a subsidiary of his company. He will have to struggle against competitors and prejudices while negotiating with dictators and revolutionaries in order to lead his company to the summit.