Underworld: One Punch to Rule

Grayson seeks revenge for his sister and is trained by a mysterious woman. Sent undercover into the Azure Syndicate, he rises to power after defeating a rival with one punch. As the new leader, he exposes traitors, avenges Shane, crushes Blackstone Syndicate and Northern Wolves, and hunts the mastermind behind Ocean Gala to wipe out evil from the shadows.