Madman's Solution

Champion Theater—a place where battles never ended—from dawn to dawn and from summer to summer, there's no such thing called as rest.

The people here were heinous criminals from all races, touching absolutely forbidden things even in this relatively lax law system.

The battling system was simple. You followed from the bottom rank—which here meant rank 3 and battled your way to the top. Your strength would constantly determine your position and future battles.

If you lost, you'd be left in serious injuries that would take years to recover and would have to battle lower ranks while still bearing those injuries. Even if you get so injured you can't even lift a finger, as long as you retain consciousness, you'd have to fight.

Of course, the management wasn't dumb. If a rank 4 tried to downplay his strength and appear as rank 3, he'd still be played against rank 4s.