JD, known on the street as Junk Dog, throws fixed matches in illegal rings on the fringes of the Megalonia circuit just to get by. A chance meeting with Yuri, the reigning Megalonia champion, pulls him out of his rigged fights and toward a real bout that could cost him everything his survival has been built on. Part of the Megalo Box project marking Ashita no Joe's fiftieth anniversary, this two-volume manga reworks the rivalry between Joe and Yuri into a story of its own rather than retelling the anime.