Yiyi lost his father since he was a child, and has been working hard to take care of his mother, but he is always bullied by gangsters, and even listens to them when he is bullied Speak ill of mother. By chance, Yingcun rescued Yiyi who was being bullied, and brought him back to the boxing gym when he fainted. When Yiyi woke up and saw so many people practicing boxing, he was eager, so he asked Yingcun to help him. Yingcun showed him the skills of catching leaves with his fists, and told him that one day he could receive the leaves and he promised him. One step didn't want to give up, bought a boxing magazine with poor pocket money, practiced hard every day, and finally succeeded. If you want to practice in the boxing gym, you must have the consent of the curator. Seeing this, the curator asked him to fight Miyata and leave if he lost. One step fights with boxer Miyata, but one step is inexperienced and beaten by Miyata and runs all over the field, and one step is completely knocked out. The curator was very optimistic about this endurance player, so he agreed to keep him and took him to the Kamogawa Boxing Gym for hell-style training.