He is the "invisible man" in the karate gym and the "mascot" in the eyes of his colleagues. He was fooled into spending huge sums of money to learn "magic skills", but was knocked out with one blow in a nationally broadcast slap contest and became the laughing stock of the entire Internet. However, when the endless ridicule and humiliation overwhelmed him, the burning pain in his cheeks quietly turned into a warm current in his Dantian... Wait, is there really a secret secret hidden in the charlatan's formula?