Jafarx Stories

What would it be like if Sinbad had a younger sister? What would it be like if that younger sister was 2 years younger than him? Would she be as strong and as powerful as her older brother? Or would she just sit in his shadow? [This is a Ja'far ff but it also follows the storyline of the adventures of Sinbad/ Sinbad no Bouken. Some things will be changed to fit the plot and the story will follow both the anime and manga. I do not own any characters in this story besides Amaris.]