Hogwarts

When you were little Harry and y/n (you) were brother and sisters. Then you went missing for 2 years but one day you end up in Hogwarts and because it’s been so long Harry can’t remember what you look like. The last thing you told you before you went missing was ‘I know you don’t have this scar  but One day you will I promise’ he said. Then in Hogwarts all those years later do you work with the same scar is Harry Potter.