this isn't a "kuniokun fighter." there's some fighting, as with almost any kunio game, but it's actually "Kunio Ultra Hot-Blooded! Big Athletic Meet."
it will probably be a lot like Nekketsu Koushin Kyoku: Soreyuke Dai Undoukai (Hot-Blooded Marching Anthem: Go Go! Big Athletic Meet) for the famicom. players compete and fight against each other in different sporting events like "Cross Country, Obstacle Course, Ball Pole and Fighting Tournament."