Manhwa Recap: Left Handed Mutation is based on the story of Xingcun. Human genes are malleable; individuals with uncommon genes may acquire superhuman skills, while those with monster-like genes may acquire monstrous features. Following the heroine's sacrifice, Xingcun awoke again and eventually underwent a monstrous rebirth. In this existence, the prodigal son will utilize his mutation to protect the heroine. He will stealthily use his mutation to hunt monsters, seize the demon god's ancient power, and put an end to his reanimation while lurking among the superheroes.