To Rekindle My Manhood, I Had to Join Bureau 749 and Slay Demons

The overworked wage slave Yuan Zhengwei is accidentally reborn in the body of an incompetent man in a parallel world. Even with the cheat-like Monster Manual System that lets him fight monsters and level up, he feels as though his life has plunged into an endless abyss and the sky is about to fall. Just as he is consumed by despair and sees no reason to go on, the wheels of fate begin to turn. By chance, he discovers that the honest, good-natured migrant worker living next door has turned into a terrifying white-haired zombie. At death’s door, Yuan Zhengwei gets incredibly lucky and kills the white-haired zombie, unexpectedly activating his dormant golden finger! [White-Haired Zombie killed. Reward: Zombie Immortality, Repair Physical Defect +1.] [Fog Ghost killed. Reward: Flight and Concealment, Repair Physical Defect +1.] [Thousand-Year Tree Demon killed. Reward: Grafting and Transplanting, Repair Physical Defect +1.] [...] After learning how to repair his physical defects and earn more rewards, Yuan Zhengwei goes on a killing spree. He has only one conviction: He will do whatever it takes to regain his virility! Soon after, Yuan Zhengwei joins the mysterious Bureau 749. From then on, a chilling tale spreads through the underworld: Bureau 749 has a murderous agent who leaves no survivors wherever he goes. Bureau 749 issues a clarification: “Unless absolutely necessary, we will never assign Yuan Zhengwei a mission. Our Bureau 749 principle is to contain and secure. When he gets involved, not a single person is left alive!” Yuan Zhengwei replies boldly: “I may be part of Bureau 749, but my rules are the rules! Anyone who dares stand in the way of me regaining my virility, even if you’re a god, I’ll kill you and show you!”