Dragon Hunter (2000)

Blurb:
In the Kaya province, there are two ways to rise in power - by controlling dragons or by slaying them. Seur-Chong, a hunter with the Dragon’s Curse, took the latter path, but he doesn’t care about power. He’s just in the dragon slaying business for the money. With his partner, the gifted shaman Myung-Ho, he’s quickly made a name for himself as a mercenary. Perhaps too big a name, as a rival dragon-hunting group, the Chunjoo, is now out to eliminate the duo. In order to keep off the Chunjoo’s hitlist, Seur-Chong and Myung-Ho will have to join their payroll.

Source: www.anisearch.com/manga/3259