Confined

Grenja, a girl of 9 years old when the Titans attack the Shiganshina district, is trying to avenge her mother and her best friend after they are killed on the first fateful day. On the shipment boats to wall Rose, she meets Eren, a loudmouth boy with huge amounts of determination, Mikasa, who's quiet but strong, and Armin, who's very intelligent, supports his friends... And she develops a small crush on him. This crush grows until she full-on loves him, but she doesn't want to get too attached for fear of either of them dying. She follows him to the Scouting Regiment where she finds some trouble... But gets a friend out of it- Mylius Thatcher. This is the sad reality of any typical soldier in the scout regiment.