Gon's Sister? (Killua x Reader)

[Completed] [Is currently being edited] (Please Note that you are 14 turning 15 in this story, you're not 12 like everyone thinks) *Sequel is being made: "The Zoldyck Family" if you are interested after you finish this story* When Ging returned to the island, he never mention how many kids he had. He brought back Gon...