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Draco accidentally apparates outside the wards of his home to down the street from Hermione. She sees him, and they become the best of friends before Hogwarts. During the war, Draco was a secret informant of what was going on on Voldemort's side, not even Dumbledore knew who he was. Welcome to NaNoWriMo. (I DON'T OWN ANYTHING! JK ROWLING DOES)