A delivery boy who was looked down upon by everyone became a police informant because of a grievance. He rose step by step from the middle of black and white, but encountered the real darkness when he was at his most swollen - for the sake of the people behind him, he had to stand up from his knees again. Pretending to be a pig and eating a tiger + being slapped in the face by the villain + revealing the identity + being crushed by a higher level + a closed loop of revenge + monopolizing resources + gaining glory
