DEMON RAW novel

A man named Dan Hyung-woo was kidnapped by Chen Gi-ja (天氣子), who was once called the Ki of the World, and was forced to consume Yin-Yang Go in a cave with 99 children, and was forced to practice martial arts and was on the verge of dying several times. Due to the various true methods and the concentration of unusual energy in the surrounding area, things happen in the cave that even the heavenly ruler could not expect.[4] Over time, all but one of the 100 children die in the past. The protagonist, Dan Hyung-woo, who is the only survivor, survives in another dimension and returns to Moorim once again after many twists and turns.