In a nutshell: I was the Dragon King Hall's master, a God of War who had retired to the city, but I unexpectedly activated the Reverse Face-Slapping System. The more people mocked me as a useless nobody, the more my power skyrocketed, until a delivery rider cursed at me for “not even being able to snatch a single order.” I casually summoned a nine-clawed golden dragon and blasted the entire headquarters of the delivery platform into the sky.
