Gambling King: No Way to Return EP 67

The Chow family gains control over Riverton's gambling scene after Quentin Hill's elimination, while a mysterious individual seeks to learn the 'Behead and Capture' technique to avenge their parents, only to be tasked with finding and defeating Ethan Gowdy upon release from prison.Who is Ethan Gowdy, and why is he the target of such a dangerous promise?