My Twin. [Harry Styles]

Casey Styles, is Harry Styles little sister. Twin sister to be In fact. Casey doesn't have a perfect life even though her brother is one of the biggest heart throbs on the planet. No. Casey's had a difficult passed that haunts her, every single day. She gets bullied a lot, She has no friends, and her brother or sister aren't even there to protect her.
Casey never opens up to anyone, she's stopped speaking to everyone including her family.

What happens when Anne, their mother starts to worry about her little girl, she can only think of one thing, send Casey to live with her brother in London, Harry and Casey have a strong connection, and not just cause their twins. Can Harry break her walls, maybe with a little help from certain people. 6 to be in fact.