Gol D. Roger has a navy brother. His niece once dreamed of becoming a navy, but the Demon-Slaying Order made her and her friends orphans overnight, and her former friends became enemies.
Because of the Celestial Dragons, she became a slave and even ate the Devil Fruit. She escaped from the Celestial Dragons and returned from the Grand Line alone with a child aged one and three.
In an accident, she and some people traveled to an unknown time and space