Disclaimer: This is only Fanfiction. Attack on Titan and all associated characters and situations are property of Hajime Isayama. I make no claim to ownership except for my original characters and plot.

Summary: They found a girl outside the walls. What is her relationship with the doctor?

Chapter 1: The Girl Outside The Walls

Erena was running.

She knew she was running even if she can't feel her feet. If not, she will die.

The steps were growing closer. Her heart was thudding erratically, fear was the only thing that kept her going.

The titan was chasing her since she went inside the forest. She was already tired to begin with and unconsciousness was the only thing waiting for her but who knew that this titan was hiding behind the tree and what's more frustrating is that, this titan was tall enough to catch her even if she climbs on the tree. The only choice she has was to run deep inside the forest where the trees are taller than him.

Her eyes lit up. She finally saw big trees she canclimb into. She's safe!

But...who knew that something stupid can happen anytime. She tripped into something. It's not a root of a tree or a rock. She glanced at it and saw that it's a human wearing a green cape with a symbol of wings or something in his clothes. It's obvious that he became a titan food based on his missing body parts. He's lucky that he was not eaten completely.

The titan bent down and his hand was approaching her. She knew that it would be too late if she stands up and run because of the pain she was feeling in her ankles. Something caught her eyes. The dead man in front of her was wearing some metal gear attached to his body, and beside that gear was a hand holding a sword.

And her survival instincts kick in.

She rolled out of the titan's hand way and clutched the blade away from the dead man's grip. She ignored the pain in her ankles and rushed directly to the titan.

The titan's hand switched direction and was coming onto her once again. Instead of rushing away, she increased her running speed, jump, and flip into the air with her knees tucked to her chest. This feeling was familiar to her. She felt as though she can hear the sound of the bars, metals, the flattening of cushion, and the sound of the air as she flips her body.

It's always like this.

Whenever she fought in her own style, she would always remember her unfulfilled dreams. But she has no time to reminisce those memories. Her life is on the line. She still wanted to live a happy life even if... even if...

Pain shot through her ankles as she lands on the titan's arm perfectly. Her mind was cleared of thought that heightened her focus as she runs to the titan's shoulder. She knew that the titan won't stop until he eats its prey. Just like she thought, the titan's other arm was coming towards her.

She bends her knees and jumped so high that the titan's hand didn't touch her. Finally, she reached the titan's shoulders and was to slice his nape but she heard that something was approaching fast behind her. Without thinking, she made a backflip and landed on the titan's wrist with her knees bend so low, using it as a momentum to jump again up to the titan's head. She put her two hands flat on the head with her body aligned vertically and as though her arms became her legs, she put force on both hands to fly in the air while twisting her body to face the nape. She sliced it swiftly and face the downside effect of her plan as she was falling fifteen meters onto the ground. Pain shot through her ribs with a sound of cracking that made her breath hitched.

Great. Her ribs were broken.

But it was great that she killed the titan at least the threat was gone or as she convinced herself to.

"My life was in danger and you are hiding there?!" She shouted and made sure that the people hanging behind the tree, 15 feet away heard her.

She knew that they are here. The dead man's body told her that there are fights that happened before she came. Also, there was steam in this place that was not entirely gone which can only come from the titan bodies that already evaporated.

The sound of swishing, clicking, and the sound of the gear using gas was heard and four people appeared to her side. They are fully armed like the dead man.

She knew that she can't trust them. They are the devils of the earth that made her life miserable. She's contemplating if she can be safe with them or she's much safer with the titans. But alas, she was so tired and her body won't move. She doubts that she can hold her consciousness for much longer. If that happened, she wouldn't have the chance to see the people who found her and she's uncomfortable with the feeling of not knowing anything in this hell. Whether she trusted them or not is not the case, as a ten-year-old girl and now powerless, she can only bet that they might treat her a little better, especially the women in the group who was looking at her with concern.

Haaaa... Dammit! Why did she have to be separated from them?

"Are you okay?" The blonde hair woman asked. She can only utter a hummed as her eyes grew hazy.

"Why would there be a kid out here?" The smallest among them asked irritably. She can't help but thought that he was hiding his surprise at the sight of her.

Is it that weird a kid running with the titans? Aren't they doing the same?

Erena chucked mentally. She longed heard that there was a wall protecting them from titans and that was her aim. It doesn't matter what sort of human beings they wanted to be. She can't be bothered to deal with these evil beings. She just wanted to escape this never-ending nightmare. She wanted to live a life of happiness for once.

And to do that, she needed to get inside the walls.

"We should bring her back to the base to treat her. She looks worse." The woman with brown hair said to the blonde man beside the midget.

"What date is it today?" She asked weakly.

"It's... 845..." She cannot understand what she was saying except the last part. All she can hear was buzzing in her ear.

845 huh? She knew it's 845. But the date is what she needed...

She needed to meet them.

Before she can think of anything, her mind went blank.

She lost consciousness.

"Corporal, maybe you should hold her a little carefully?" Petra can't help but wince in place of the unconscious little girl they found. "Her ribs are broken." She continued.

Levi ignored her and kept on carrying this disgusting little thing in his shoulder like a sack. It's their fault for forcing him to carry this unknown girl to their camp.

Earlier, they were patrolling the area to ensure safety from the titans and let the doctor get the medicine with the commander and one of his squad members. They heard a horde of titan near the area so 5 people went to take a look and left 2 people behind.

They found, in separate directions, a total of 8 titans. Unfortunately, the captain who was recently promoted by the commander was killed when he tried to take on 2 titans at once which was so stupid. He might be a captain but he was still not experienced enough. Erwin tried to stop the commander from promoting him but his skills made the commander object to it.

That's when they saw the girl who single-handedly killed a titan.

"They still haven't come back?" Erwin Smith asked one of Levi's members, Gunther.

"They are still getting the herbs, Sir." Gunther answered with a salute.

"Oi, hurry up and treat this shit." Levi put the girl down and let Hange and Petra do the job.

Now the rest of the group finally noticed that there was another person with them and more so, a girl. A young girl which made their mouth left often.

"Levi-heicho, w-what is a girl doing here?!" Oluo Bozado, who always imitates Levi loses composure as he pointed at the young girl.

"We found her in the forest chased by a titan." Petra answered for him as she knows that Levi won't bother to answer.

"Tell Keith and Eld to hurry up." Levi ordered, ignoring his blatant disrespect of saying the Commander's name without honorifics.

"Yes, Heicho." Gunther said and leave.

Levi sat by the tree while watching the others surround the girl as Petra and Hange bandaged her with curiosity. Even he, himself was surprised that a girl was outside the wall, and more surprising when the girl killed a titan with moves he has never seen before.

"What do you think?" He heard Erwin's voice beside him, standing and leaning against the trunk of the tree.

"Probably kidnapped and thrown out here."

"Kidnapped huh?" Erwin mumbled. "Would you believe such thing?"

"No." He answered. Kidnapping a person and throwing them out of the walls was highly impossible unless they have a death wish. Even if she was a noble, no kidnappers or even assassins were brave enough to wander outside the walls full of titans.

"Then, do you think a member of survey corps or garrison will do it?"

"Possible, but we are the only people who went outside the walls this month." The meaning behind his statement was obvious. There are only 11 people who went on this mission and all of them, except for the doctor who was not trained, were capable of killing a titan on their own. His squad, which consist of four members, 4 captains including him, and the commander of the survey corps.

While having skills in killing titans can make it possible to kidnap a girl and throw her out here, the only possible hiding place they can use to hide the girl was the cart they are carrying. But the provisions inside the cart were opened in front of them and they saw no girl inside. And because of their skills, they are highly sensitive to sounds and no sound of a person getting out or falling in the cart was made because if it did, it will be very obvious for them. Besides, these are the members of the survey corps who have earned their right amount of trust and believe that they won't harm a little girl.

But that raises more questions.

The garrison may slack off in their duty, but the authorities were very strict when it came to the walls. They are selfish and their self-preservation allowed them to be stricter to the Garrisons so that the walls will be secured to ensure that no titans will ever come in. Every scout coming in and out of the walls were always recorded and checked by them.

"Who is she? How did the girl get outside of the walls? Where did she get her excellent fighting skills that slayed a titan?" Erwin knowingly echoed Levi's thoughts out loud. "Or something along the lines."

"E-everyone!" Eld shouted, getting their attention. He was panting and soaked in blood. Behind him, was the Commander, Keith Shadis, Gunther, and the doctor who gave a panicked look on his face.

Levi stands and walked towards the group. "What happened?" He asked.

"Get the horses. We needed to leave." Keith ordered. "Titan, titans are coming this way."

"Heicho, these are the herbs needed to make the medicine." Eld gave him a pouch full of herbs. It might look small but inside was the only hope the people have inside the walls.

They have come to an agreement earlier that the one who will hold these herbs would be him as they believe that the only one who can protect the herbs will be humanity's strongest. Of course, Levi ignored the clenched fist of the commander.

Because their main objective on going out the walls was not to kill titans or explore new territories but to assist Dr, Kruger and assure his safety in getting the rare herbs needed to stop the plague on the city, they needed to avoid fighting titans as much as possible so they proceeded to leave before the titans find them.

"Eh?! Who is that kid?" Eld asked in surprise when he takes a look at the cart.

Levi noticed how Keithglanced sharply at the direction Eld was pointing at and his breathing stopped. This was a completely normal reaction because the commander needed to be alert when an occurrence like this happened as they are in charge of what was happening outside the walls.

But what was weird is how the doctor glared at the child who he didn't know and why his knuckles, trembling a little, turned white. He concluded that this doctor was angry at the child.

Is he the one who throw this girl outside the walls

"A-a girl outside the wall?" Keith stuttered and then turned to look at each of them. Levi knew what would happen so he increased his pace a little towards his horse. He also readies himself, his hands were inches away from getting his blades. He needed to be alert if a titan will find them because of the noise.

"EXPLAIN YOURSELVES THIS INSTANT!" Keith bellowed.

Erena slowly opened her eyes and was blinded by the light peeking on the trees. The light in here felt so warm despite the titans lurking around. This might be one of the good scenery she found for a while without blood and war.

"You're awake. Are you okay?" The blonde woman on her right, who also asked her that same question before she lost consciousness, asked her again.

"Water." She utter. Her throat felt dry and it's uncomfortable to talk.

"Here." Erena tried to sit up but winced in pain. Her whole body hurt.

"Be careful." She worriedly said as she supported her and let her drink water from the bottle. But she soon cursed herself for letting her guard down.

Why did she accept the water? What would happen if they poisoned her and die?

Having no idea if she needed to spat out the water while risking them getting suspicious at her or just let herself drink it, the water stayed in her mouth. But the scrutinizing glare of the person on her left made her choose the latter. If she showed symptoms of poisoning, let nature take its course.

She observes her surroundings and noticed that she was on a cart surrounded by people riding on a horse and wearing a green cape. They are at the edge of the forest and no titans were in sight. Looking forward, she saw a small gray object kilometers away. She can't help but sighed in relief and be happy at the sight of the walls she has heard.

"Little girl." The man riding on a horse on her left, and also the person who was busy glaring at her from the beginning called her with a rough voice. If she hasn't heard that kind of rough voice a million times in the past, she would've cried and shrunk in fear.

"What is it, old man?" She heard a snicker on her right where the brunette haired woman was. She was riding beside the blonde woman.

"She's sharp tongue like you, Levi." Erena heard her whisper to the person behind her.

"What are you doing here outside the walls?" Everyone becomes silent. The noise of the cart, hooves of the horse, and the swishing of the air was the only thing left. Even a single breathe was not heard.

This was the question everyone was thinking about and longing to ask way before the girl woke up.

Erena appeared confused. "What are you talking about, old man? Aren't you also outside the walls?" She was surprised when the man grabbed her harshly. Her ribs felt jumbled in different places.

"Commander!" But the so-called commander ignored it and shake her while shouting in front of her.

"Don't joke around me, kid! We are the survey corps who are the only people allowed to get outside the walls to kill the titans out here and save humanity! No human beings especially a child are out here aside from us!"

She blinked in surprise. Save humanity? No human beings except them?

Why?

Why did it feel like that they didn't know anything outside the walls besides titans?

She didn't want to believe it but the man in front of him, no matter how stupid he looks, was telling the truth.

Or maybe this was also an act. Have they found out about our plan?

No! It's impossible! They did everything to feel the connection in the paths and do their best to protect their memories from the coordinate.

"I-i don't know." Erena didn't know what was going on here. She's confused.

"Put the girl down, Keith." The commander glared in the direction behind the brunette haired woman and saw the midget whom she cannot call a man because...

Well, he's a midget alright.

But the presence around him and the look on his face even if it's a scowl can only derive two words.

Mature and Confident.

He was someone who has gone through many ideals in life and maybe most of them were because of the titans.

"I thought I told you about ordering and disrespecting the person in authority, Levi-Heicho." He emphasizes the last part to tell that he was still a commander and much higher than him.

"I don't respect stupid people." If they were not in this kind of situation, maybe Erena will also laugh with him. She started to dislike this so-called commander so laughing at him was natural.

"So kid, I will ask you once again what are you doing outside the wall?!" His saliva was raining on her face. It was disgusting. "There's no way you don't know after killing a titan at your age! What you got amnesia or something like Grisha?!" Erena froze.

"Keith." A cold voice behind them stops him. "Put the girl down and be quiet." Keith realized his mistake and followed the man's order. No one questioned the name Grisha because of it. Although Erena was sure that some people would investigate about it.

Erena finally noticed that the man was only wearing civilian clothes, unlike the others who wear gears and a green cape. She stared at him dazedly. She remembered that cold voice. That voice when he threw the guard down to be fed on the titans. Memories hidden deep within herself started to show up, vividly playing on her mind.

"Do it, Erena!"

"Very good, Erena."

"I'm sorry, but you need to die."

"What are you doing?"

"Y-you are the..."

"We need to go."

"Erena, I'm so sorry."

Her breathing started to be faster. Sweat falling down her face, alerting the blonde woman. "Are you okay?" She asked Erena for the third time. Erena forced herself to calm down.

It's okay. It's all in the past. Besides, she did the right thing. They're evil and they needed to be punished. But...

Erena immediately became alert, cursing herself inside. She forced herself to think while maintaining her neutral face. She needed to be as calm as possible. Her plan that she wanted to achieve has many risks and cons that might affect her and everyone else. To succeed, she needed a calm mind and first think how to deal with this man.

A man she knew was here in this place. She needed to deal with him since it's her fault in the first place. If she only...dealt with them a long time ago, this wouldn't have happened. Their plan would be successful even with some problems.

Levi watched every change that happened in the girl which made him more curious about it. The doctor and the girl knew each other. But for some reason, the doctor has hidden anger with the girl and the said girl feared the man.

The girl might be an illegitimate child since they have the same eyes. But it would be a pain in the ass to throw her outside the walls just because of it. Besides, the Kruger's was a noble family and having an illegitimate child was completely ordinary. Moreover, Dr. Kruger has no wife and living alone after her sister died of disease. So there's no way that he would care even if he has an illegitimate child since it can be solved by taking her as his heiress or something,

Now that he remembered it, his sister's illness was Dr. Kruger's motivation to study medicine. Today, although it's still a tragedy that his sister still died, he was adored by everyone because of his ability to treat any disease. An example was the plague that was occurring in the Shiganshina district right now. Without him, that sickness would kill a percent of the people's population.

The Government might be happy with that outcome since fewer people, less expenses. They might take advantage of the taxes, but people are still needy when it comes to plague like this. The problem was, the people who already have a negative impression of them might hate them even further. And aside from money and power, their faces were one of the important things for them even if they are so shameless to care about it

Now, the biggest question is, who is that girl and her relationship with the name Grisha that made Dr. Kruger so secretive?

AN: I just thought this story out of the blue, so I don't really know when I will update. I was hoping that ideas just keep flowing so I can continue this story. I definitely don't want to abandon this. But...let's just nature takes its course.

AN: I know that some of you will believe that Levi is MY MOTIVATION that made me think of this story. I mean, who wouldn't love Levi? He's cool and powerful! Even if the recent manga updates made me wish that he lives. Just so you know, I read and watch the AOT all over again just to see and read him!

Good day Everyone!