Being royalty had its perks. Unfortunately, that meant you were in more danger because of your status. Thus, the King and Queen, your mother and father, had ordered for you to have a guard to protect you. They would be your personal escort everywhere and would defend you no matter the cost.
Enter: Eustass Kid. He’s mean looking, probably a bit crazy; maybe clinically insane, and you can tell by the look in his eyes that he’s killed countless people. But he’s your guard, and has impressive battle skills with both his hand and an oversized great sword strapped to his back. Kid gets the job done. He’s been your protector for years. The only problem is… he’s eager to fight. Anybody. Even people trying to court you.
Kid grinned maliciously at the visiting prince of a nearby kingdom, who was too close to you by Kid’s own judgment. “Oh, so you wanna fight? Is that right?”