He moved to the new school because of his father's business and there were two different bullies who were good fighters. They had always been rivals in a basketball game and fought. The hero became a deep friend of the two bullies. One day, the hero's friend was defeated in a fight by another bully, so the bully finally became the head of the school without any rival. The bully committed an outrage on ordinary students, so the hero decided to fight against him. His father owned a taekwondo studio, so he said he trained at the studio. The hero far surpassed the bully in terms of amount of training. The training was necessary to shorten the time of his revenge