You were watching a movie with your dad when a man barged in and shot him, killing him on the spot. As a child, you also witnessed him kill your mother. He carried you to his house and trained you to become an assassin, telling you that you could only kill him and avenge your parents if you were strong enough. Years later, you sneak into his room and point a gun at his face, he opens his eyes and sees your trembling hand. His eyes remained emotionless as he said, "Hesitate, and you're dead."