Powerful Runaways

Several Children decide to runaway from their families where they were either ignored, mistreated or abused. What will happen when one of them is Harry Potter the real BWL instead of his brother? What will everyone say when these children come back when they are 16 and 15? How will they work with the powerful group? Manipulative Dumbledore/Alive James and Lily/Harem/Bisexual Harry