The Lost Son

Hadrian Potter/Harry is separated from his family when he was a baby. After going through a difficult childhood, going through multiple orphanages, getting a new family and finding out that he can do magic, he gets his Hogwarts letter. What will his life be like in Hogwarts? Will he find his family? Dark/Grey NOT evil Harry, Abused Harry, Prodigy Harry in Slytherin Harem