Poison-Eating Healer

Cheon Haesun is treated as an outsider in a society that reveres monster hunters as heroes, and he discovers he is dying just as monsters attack his neighborhood. Haesun survives because his sister sacrifices herself, then awakens as a rare Poisoner, a hunter whose toxic abilities can heal. He hopes his powers might cure his unidentified condition and help him achieve the ordinary life he has always wanted, but it is uncertain whether they can do so.