Gungrave

Brandon Heat joins Millennion, a major mafia organization, after a traumatic event in which his friends are killed, following his only remaining friend, Harry McDowel. Harry seeks power within the syndicate, while Brandon remains to be close to a woman he loves, now under the care of Millennion's leader, Big Daddy. Over time, as Brandon demonstrates loyalty, he begins to understand Millennion's actual goals and motivations, leading to internal conflict.