I Raise a Skeleton

The most aristocratic of all professions, Necromancer! Barely even 1,000 in the entire world, I was born with a diamond spoon, no, a necromancer spoon in my mouth! ...Or so I thought. 'I'm just a freak necromancer.' [Skill, 'Summon Ordinary Skeleton' (E-Rank) is used.] Lich? Dullahan? Death Knight? Bullshit, I can only summon skeletons. But then, one day, suddenly. [Hidden condition achieved!] [Condition: The Law of 10,000 Uses] [Your rank has grown to D-Rank!] I achieved a hidden condition and gained the ability to raise skeletons. From E-Rank to S-Rank! A story unfolds of Joo Dong-hoon, the world's only cursed necromancer, on a rapid sprint towards becoming a ranker!