After the sudden disbanding of the legendary group Mugen, who used to control the town, 5 new groups appeared. Sannoh Rengokai (Hoodlum Squad), White Rascals, Oya Koukou (Oya High School), Rude Boys, and Daruma Ikka, took control of the town on their separate territory, and the town began to be known as the SWORD area. When they tried to protect their town from the yakuza organization Kuryu Group, their epic stories began.

"every character is a leading character"