Someone Like You | Levi x Reader

(f/n) has spent her whole life dreaming. All she has ever wanted was to become a scout. At a young age, (f/n) began to have breathing problems which affected her day to day life in the outside world. To protect her, her overprotective father devoted his life to finding out what is wrong with her, and a cure, and keeps her locked up in the family house with a set of rules, which consist of not being aloud outside and having no contact with the outside world. Her only friend is her loyal, hairless cat, Momo. (f/n) has come to accept her life, no matter how disappointing it is.
After meeting Levi, he shows her what it really means to dream and that her way of 'living' is not living at all. The two fall for each other, and (f/n) finds comfort leaving her family to be with him feeling that her illness can be controlled, and that it isn't something that should be taken as seriously as her father took it. But what will happen when she realizes that her breathing issues will always have an affect on her life. And what will happen to their relationship when the Titans breach the walls?