Artifact-Devouring Player

Sanghyeon has the uncanny ability to absorb powers of magical artifacts—by devouring them. But it took him thirty years to master, and at fifty-five, it's too late to escape mediocrity. Then one day, he's miraculously sent back in time to the fateful day he awakened his powers as a monster-hunting player. With a chance for a do-over, he wastes no time using his ability to its full potential, rapidly absorbing incredible powers and rising through the ranks, determined to become the hero he always dreamed of being.

(Source: Webtoon Entertainment)