Naneun Skeleton-eul Kiunda

A profession known as necromancer is regarded as one of the most prestigious, with fewer than 1,000 individuals globally. The protagonist believed himself to be among the elite, born with a natural talent for necromancy. However, he soon realized he was considered flawed, as he could only summon skeletons, unlike others who could call forth liches, Dullahans, or death knights. After fulfilling a hidden condition, he unlocked a new ability and his rank improved from E to D. His rank continues to rise, and his story follows his journey as the only cursed necromancer striving to become a top-ranked individual.