A legendary and powerful team called Mugen once ruled over a town, and the only ones strong and willing enough to resist it were the formidable Amamiya Brothers. Then Mugen abruptly broke up, and the Amamiya Brothers vanished without leaving any trace. In their wake, five gangs seize the area: the Sannoh Hoodlum Squad, White Rascals, Oya High School, Rude Boys and Daruma Ikka. Together they take the name G-SWORD and rename the territory SWORD, a name built from their gang names. The five-episode short anime is based on the live-action High & Low entertainment project.