Being Tony's sister has its perks. You're rich because he gives you unlimited access to his accounts. Your brother is literally Iron Man so you're obviously protected, but you also know how to take someone down if you had to. The only thing that sucks is the fact that Tony makes you live in the Avengers Tower with him. He's over protective and doesn't want anything bad to happen to you. It wasn't that bad until he came. The man who killed your parents. It only gets worse when he takes interest in you, but you want absolutely nothing to do with him. Lots of um... angry sex. Bucky Barnes x female reader I do not own any of these characters (besides y/n) and they belong to marvel.