I came up with this after talking to one of my friends who also is an Attack on Titan fangirl. This entire fanfiction and conversation with my friend was just speculation, but it's not all that far fetched. Basically, I told her how it looked like in the episode when the Survey Corps gets back to the city it looked like Levi took the patch off of Petra's uniform. Then when they two guys wanted to go back for their buddy, I can only assume the patch Levi took from Petra he gave to them. So without further ado, let's get on with the fanfiction.

Silently, Levi walked to the pile of bodies that were covered and in a neat row. The pain in his leg was almost unbearable, but it didn't matter. All that mattered was seeing Petra one last time. Levi pulled back the cloth covering her and looked at her. He was filled with sadness and looked away almost instantly.

'Dammit...'

It was too much. It was all his fault that Petra died. If he had let Eren change into his Titan forme and fight, she would still be alive. The image of her face in death was burned into Levi's mind: Her eyes, the ones always bright and full of life had been dulled and vacant. Her jaw rested slack against the tree she was crushed against with blood trickling from her mouth. Her lips would never again curve into a smile of compassion or confidence.

'Why?'

She would never speak again. Never argue, never laugh or cry. Soon her voice would be forgotten by everyone. There would be nothing left to prove that such a wonderful woman ever existed. Levi looked once again at Petra and knelt beside her. He swept a stand of her hair aside.

'Your face isn't calm in death Petra... But I want to remember you as long as I can. I'm just sorry it has to be this face.'

Levi grasped the sheet covering Petra and paused. His hand fell to the Survey Corps patch on her uniform. His eyes misted briefly and with one rip the patch was off and in his hands.

'Why don't you stick around just a little longer?'

He slipped the patch into his jacket pocket and left Petra's side. He began walking back to his horse and stopped when he heard two other rookies in the Corps yelling at their superior officer. They were saying how they needed to go back for their friend, and how they couldn't just leave him to be forgotten. Levi found himself moving towards them without consciously telling his feet to move. His hand grasped the patch taken from Petra's jacket and he reached it out to the two rookies.

"Take this. It was his. Now Ivan won't be forgotten."

One of the rookies reached out and took the patch from Levi. Levi strode away quickly, before the two could question him or see the mist returning to his eyes. He climbed atop his horse and signaled the order to return to the wall. His face bore no emotion, and he said not a word to anyone. Inside, his emotions spiraled faster than he could control them or even block them out. He ground his teeth together until the coppery taste of blood filled his mouth.

'Pathetic!'

Levi's thoughts screamed within his head.

'What's one more death? One more not coming home? One more killed at the hands of those damn monsters...'

Levi's muscles tensed and he screwed his eyes shut.

'She was just another soldier, right?'

His thoughts quieted their screaming.

'Petra was just another one following me into battle. She was just like all of my other fallen comrades.'

Levi felt himself shake as a sob disguised as a sigh escaped him.

'Except I didn't love my other comrades.'

There's this little voice in the back of my head going 'This isn't okay Sane!', but I'm just doing what I always do when the voice talks... Sit down with some frozen dairy products and listen to it lol.

For real tho... I sort of ship Levi and Petra... So the fact that she's dead upsets me greatly...