Yugo

Yugo (勇午, Yūgo) is a Japanese manga written by Shinji Makari and illustrated by Akana Shu, serialized in Kodansha's Afternoon magazine from 1994 to 2004. The series transferred to Kodansha's Evening magazine wherein the subtitle "the Negotiator" is added in. An anime adaptation that comprises the manga's full title, Yugo the Negotiator was produced in 2004.

Plot
Yugo Beppu is the world's most successfull negotiator whose only weapons are "words." With rich knowledge and a calm judgement, he believes in the humans inside them where he has managed many dangerous negotiations successfully until now. Having both a very tough body and determination, and his keen insight, Yugo often goes to great length to rescue those he was asked to.