Myst, Might, Mayhem

Jeong, a sadistic serial killer known as the Slaughtering Scythe Demon, finds pure joy in taking lives. By a twist of fate, he bears an identical resemblance to Mok Gyeongwoon, the elusive third young master of the prestigious Mok Sword Manor. Offered a deadly bargain to escape his imprisonment by assuming the young master's identity, Jeong seizes the chance without hesitation. Slashing his way into a new existence, he must eliminate the real third young master and step seamlessly into his shoes. But in a world built on deception, high-stakes politics, and martial arts supremacy, can a ruthless serial killer truly survive the treacherous life of a noble heir, or will his bloodthirsty nature expose the ultimate ruse?