Nekketsu Kouha Kunio-kun, but with altered graphics and bosses having more HP.
Intro cutscenes are gone, Kunio and the Japanese highschool setting was changed to a more generic hood and The Warriors-looking unnamed protagonist. Some of the new sprites look cool, and some considerably worse - stage 3 feels like trash with those hookers and sound effects for them.
Still a good game for 1986, but a downgrade from the Japanese version. They could just change the students to more american looking ones if "localizing" the game was really necessary.

Also, might be a problem with my emulator, but had a lot more slowdowns in this version
than in the original one.