Baek Mujin was an unemployed young man who wanted nothing more than a comfortable job and a healthy work-life balance.

Then he awakened the transcendent EX-rank trait Weapon Master.

With the ability to ignore a weapon's penalties and draw out its full potential, Mujin discovers a simple way to get powerful equipment without paying a fortune: buy strange cursed weapons and experimental prototypes that nobody else can use.

The problem is the people making them.

Han Serin, a blacksmith who specializes in cursed swords, becomes convinced that Mujin's repeated commissions are something much more personal. Meanwhile, heiress and master blacksmith Yu Hayeon becomes determined to win his approval with increasingly impressive prototypes.

To Mujin, it's just business.

To the blacksmiths competing for his attention, it's anything but.