Space Punch Gn Vol 01 (C: 0-1-1)

In a mafia-governed city where corruption and violence is commonplace, two brothers find a mysterious artifact that will change their lives forever. Joe and Zack lost their father when they were young. Since then, the two brothers have chosen vastly different paths: Zack is a policeman, while Joe is a food delivery man. Despite their differences, both share a gift for boxing. However, the discovery of mysterious artifacts left by their late father is about to change their lives forever. Can the two thrive against all odds, thrown into a sprawling metropolis commanded by corrupt mafia gangs?