Who Is the Sinner?

For thirty agonizing years, Heo Ye-ju has been trapped in a living hell, branded as the daughter of a notorious serial killer. Despite her skills as a top-tier contract killer, her life has been a constant struggle, overshadowed by her father’s fabricated crimes. When the truth finally surfaces, exposing her father’s innocence, Ye-ju finds herself still imprisoned in the same inferno. Determined to shatter the chains of this unending torment for herself and others condemned to a similar fate, Ye-ju makes a chilling decision: she will embrace the darkness and become the very devil they fear. Dive into the first chapter and witness her transformation!