Killing Killer Chapter 156 has been released. In the dark underbelly of a world where the lines between good and evil are constantly blurred, Siwoo Lee's life has been forever marred by the unspeakable tragedy of losing his parents to a brutal murderer ten years ago. The anguish and sense of helplessness that have haunted him since then are about to take a drastic turn, as he encounters the killer, Jack, in a chance meeting that will alter the course of his life. The unexpected twist that unfolds when Siwoo confronts Jack is nothing short of shocking. Instead of the expected guilt-ridden confession, Jack delivers a cryptic message that shakes Siwoo to his core: "It wasn't me who killed your parents." As the truth begins to unravel, Siwoo discovers that the real culprit is a member of a clandestine organization known as the "contractors," a group of ruthless killers who wield extraordinary superpowers. With his world turned upside down, Siwoo finds an unlikely ally in Jack, who has his own reasons for wanting to bring down the contractors. Together, they embark on a perilous quest to hunt down and eliminate the registrants, each with their own unique abilities and motivations. As Siwoo delves deeper into the mysteries of the contractors, he begins to confront the darkness within himself and the true nature of his own existence. Through the lens of Killing Killer, we are presented with a thought-provoking exploration of the human condition, where the boundaries between heroism and villainy are constantly blurred. This gripping manga series masterfully weaves together elements of drama, mystery, and the supernatural to create a narrative that is as captivating as it is unsettling. As Siwoo navigates the treacherous landscape of the contractors, he must confront the ultimate question: what does it mean to be a killer, and what does it take to become one?