Dragon Hunter by Hong Seock Seo and Joong-Ho Moon. An Adventure manhwa rated Teen, published in English by Tokyopop.

In the Kaya province, there are two ways to rise to power: control dragons or slay them. Seur-Chong, a hunter afflicted with the Dragon's Curse, slays them purely for the money, working alongside his gifted shaman partner Myung-Ho. Their growing reputation as mercenaries soon puts them in the sights of the Chunjoo, a powerful rival band of dragon hunters.