Jigen Daisuke

Feeling that something’s wrong with his long-time trusted Combat Magnum, Jigen returns to Japan after several years in search of a watchmaker known as the world’s best gun smith.
(Source: Drama-Otaku.com)
~~ Adapted from the manga series "Lupin Sansei" (ルパン三世) by Monkey Punch (モンキー・パンチ).