The first game in the Justice Gakuen series. Localized as Rival Schools: United By Fate or simply Rival Schools.
Received a Japan-only update in Nekketsu Seisyun Nikki 2.
Kasugano Sakura of Street Fighter also makes a guest appearance as a playable character.
[1] - PlayStation 1 version exclusive
This tag implicates justice_gakuen (learn more).