The story begins in this legendary neighborhood. There was once a legendary organization called MUGEN that dominated this area. It was because of their overwhelming power that they were able to rule this area. However, there was a pair of brothers who refused to succumb to MUGEN and fought against MUGEN with their own strength. They were the Amamiya brothers. MUGEN suddenly disbanded due to a certain incident, and the Amamiya brothers disappeared. Then, five organizations emerged in this area. Combining the initials of each organization is SWORD, so this area is also called the SWORD area. And the gangsters here are called G-SWORD. Sanno Street Second Generation Fighting House Sanno Federation Tempting White Devil WHITERASCALS Dark and vicious high school Oni Yakuo Ruthless neighborhood ghosts RUDEBOYS Revengeful Destruction Family Daruma Family These five organizations launched a fight for dignity. The story begins with the Sanno Federation. Led by Chief Cobra, Yamato, Atan, Tie and other members with strong personalities gathered in the Sanno Federation. They had only one thought in their minds, which was to protect this neighborhood. And in front of them who were protecting the peace of the neighborhood and trying to avoid unnecessary conflicts, a man appeared. The situation changed dramatically because of this man, and the balance of SWORD will be broken... (You deserve it if you carry on with your chuunibun to the end~)