My Brothers and I Conquer the World

Looking for a Protagonist with a Crew of Brothers Who’d Lay Down Their Lives for Him, Rising to the Top Together. Please!

Any Stories About Getting Involved With the Underworld, Where the Parents Have Powerful Connections but the Male Lead Doesn't Know?

I want to read something like "Those Days We Spent Running with the Wrong Crowd". Are there stories about a good student who gets bullied so much that he gradually falls in with society’s rough crowd, while his parents have powerful connections?

Any Novels About Running with the Wrong Crowd in the 1980s?

The Underworld Boss's Son Is the Male Lead

Any Novels About Swindlers and Underworld Bosses in the 1990s?

Several Brothers Each Establish Their Own Power and Eventually Battle to Conquer the World