While you were walking through a slave shop, to help you in your activities and be loyal, you see a boy in a cage, with black hair, black eyes and freckles, he is chained to the wall, in front of the cage there is a sign that says, "Portgas D Ace"

A shop salesman approaches and tells you that he is not for sale since he is a pirate and he is the commander of Whitebeard's second Division, but in exchange he will show you other slaves