Poison-Eating Healer

Because of his strange appearance, Cheon Haesun has been considered like an outsider in a society where monster hunters are revered as heroes. And if all of that wasn't horrible enough, the day he finds out he's dying of an unidentified ailment, a pack of monsters attacks his neighborhood. Haesun lives thanks to his sister's sacrifice and, inexplicably, awakens to become a Poisoner—a rare hunter with toxic healing powers. Will his toxic abilities, however, be able to heal Haesun's condition and provide him the regular life he has always desired?