@RowMi sorry if its a little confusing, but its not the original mok gyeong woon, its a guy name Jeong, long story short, basically Jeong is stuck inside a unescapable prison, but mok gyeong woon later show up in his cell, ask Jeong to kill Mok Gyeong Woon himself, and make a double body, the clone/double body have the exact same power and abilities of the original's, i forgot why mok gyeong woon sacrifice himself for jeong, but i think it is probably because he see talent inside him