Bulpaegeomseon

U-Mun Song is the son of an innkeeper who has always dreamed of mastering martial arts, yet his weak body constantly holds him back. One evening, a guest leaves behind a painting that deeply fascinates him. Shortly after, U-Mun begins to show unexpected martial arts talent. The painting turns out to be more than it seems, marking the beginning of his journey to transform from a directionless youth into a powerful warrior.