YugoYugo.

Yugo (Japanese: 勇午, Hepburn: Yūgo) is a Japanese manga series written by Shinji Makari and illustrated by Shū Akana. It was serialized in Kodansha's seinen manga magazine Monthly Afternoon from December 1993 to July 2004, with its chapters collected in 22 tankōbon volumes. The series was transferred to Kodansha's Evening magazine in January 2004 with the subtitle "the Negotiator" added in, where it was serialized until November 2015; an additional 19 volumes were published.