For the First time in Forever (prologue)

Harry Potter and his sister, Olivia have lived with the Dursleys for their entire life. Olivia always has her big brother's back and Harry always has her back. They are each other's best friends, but this year will be Harry's first year, away from the Olivia and the Dursleys, at Hogwarts. Harry and Olivia's lives are turned upside down when they find out that they're wizards