I never imagined that a promise my father made to a mafia boss would completely change my life. Yet here I am, caught in the eye of the storm, wondering if I will make it out alive. The Yaju is a globally infamous and feared mafia organization, led by the mysterious siblings known as the K3: Kenta, Kurai, and Kaniko. No one knows the full extent of their power or their next targets. But one thing is certain: the government will do everything in its power to tame these wild beasts.