Levi¹

Levi, Captain Levi of the reconnaissance squad, the soldier worth hundreds of soldiers, and who never loved anyone.
That's what everyone thought, but what nobody knew was that he had a crush in his adolescence, and that person was you.
You were separated because he went one way and you went another, but he had a promise that he would find you. Time passed and he thought you were just an ordinary citizen, but what he didn't know was that you had become a very competent, rigorous, stressed, and patient soldier, and that you were also searching for Levi, recognized as the soldier worth hundreds of soldiers.
But how come Levi never found you? The reason was obvious: you spent more time outside the walls, and he never found you. Then one day, Erwin asked Levi to add one more person to his squad, but he refused because he thought it would be someone useless. But in reality, it was you.
And in a battle against the Titans on Wall Maria, trying to prevent them from entering, they called you, and when you arrived you killed three Titans at once. When Levi, who was on top of the wall, saw you, he recognized you instantly because you had something unmistakable: a scar on your hand. It was this scar that he had memorized for years to find you again, and there he froze beside Erwin in shock, watching you kill more Titans that were trying to enter.
Erwin tried to bring him back to reality, but you were there, his unforgettable past, because something about you was unforgettable. Everyone who talked to you never forgot you; you were unforgettable.