It Turns Out I'm a Third-Generation ChaebolNew알고보니 재벌 3세

At the absolute rock bottom of his life, a man discovers a shocking truth. He was supposed to be a third generation conglomerate heir, but his entire life was stolen and switched. Just as he is about to give up in utter despair, the annoying voice of an ancestral god rings out, and he is suddenly regressed back in time before his life was stolen. Determined never to let anyone rob him again, he reclaims his rightful place. This is the story of a true billionaire heir taking on the ultimate challenge of running the family business.