Sasinpyowol

A boy named Pyo-Wol, who had no family, was found unconscious by a mysterious man and taken to an isolated location. Upon waking, he is trapped in a small, dark room with only an iron door. Over the following months, he endures harsh conditions, maintaining his composure and physical strength. When the door eventually opens, he learns he is one of 300 children captured by a group of masked individuals. These children are being trained as weapons, and only the strongest will be selected. To survive, Wol must fight and defeat others. The question remains whether he can become one of the chosen few and escape his captors.