Here's a summary for the idea I'm working on. Tell me what you think ok?

It’s a known fact that in any city, there are only the rich and the poor. Hirou Takehiko has had to realize that reality more than once. To survive, money must become his main priority. However to make money, Hirou must now do the only thing he knows…underground street fighting, putting his body on the line to make money, all for a better life for his sister. Along with that, he must also juggle his schooling while in the midst of his fighting. From fights at school to the bloody streets, a world darker than anything imaginable is right in front of us. There is no one to save you…there is no one here to back you up...no matter how loud you scream or cry for help…Welcome to the Underground.