The Influential.

A mercenary's brother returns to search for the truth behind his older brother's mysterious death. The search is made dangerous by powerful enemies. He must use his skills in battling a great many dangerous foes to bring justice to his brother. Even if the price is his life, he's willing to stand in the way of their guns to avenge his brother. But he needn't fight alone; he has friends ready to fight alongside him to restore peace.