River City Melee Mach!!

The story of the game is the same from River City Melee: Battle Royal Special.

The sports competition between rival high schools organized by Tōdō Mamoru, the student council president of Reihō Academy, ended with the victory of Nekketsu High School, led by the notorious troublemaker, Kunio.

Just a few days later, mysterious posters for a fighting tournament appeared on the backstreets, and a string of strange attacks began… Sensing a new enemy behind these attacks, Kunio and his gang decide to join the mysterious fighting tournament.

Source: TheGamesDB