Disclaimer: I do not own anything from Shingeki no Kyojin.

AUTHOR'S NOTE: Hello everyone! This is the 10th story that I have published at this website! Updates are a little slow, since I try to update all of my stories, but I'll try my best!

WARNING: If you can't take HUGE AGE DIFFERENCES in romantic relationships, this is not the story for you, because Levi and my OC are going to be about 9 years apart, considering that my OC is Eren's little sister. But if you're fine with that, then I hope you enjoy the story!


"If you lose, you die.

If you win, you live.

If you don't fight, you can't win!"

-Eren Jaeger


PROLOGUE

"Oh, honey, look, she's beautiful," Carla Jaeger told her husband, Grisha. Grisha held a one year old boy in his arms as he leaned over to take a look at his new daughter. He smiled.

"She is indeed, just like you." Then the baby's sea green eyes turned into a dark purple. The two blinked in surprise.

"Her eyes… changed color?" Carla asked, confused. Grisha looked as calm as ever.

"She's special," were his only words.

That was the day I was born and the first time that my parents discovered my unusual colored eyes that changed depending on my emotions


"Onii-chan! Give it back!" a childish and girly voice exclaimed. Eren came running down the stairs and ran to the other side of the room. Not too long after him came out a little 6-year-old girl with her ebony hair in two loose pig tails. Her teary eyes were a mixture of orange and blue. "Mama! Eren took away my doll!"

"Tattletale!" Eren screamed. She stuck her tongue out at him. Carla smiled at the sight of her two children.

"Eren, give back Aria's doll," she reprimanded.

"She was being annoying!" he retorted.

"Was not!"

"Was too!"

"Was not!"

"Was too!"

"Okay, okay. Kids, calm down." Carla placed a hand on each of their backs. "Both of you apologize."

"But it wasn't my fault!" the two yelled in unison before glaring at each other.

"Kids," she said in a warning tone. They pouted before turning to each other.

"I'm sorry for taking your doll."

"I'm sorry for being annoying." The two smiled happily.

"Do you want to go outside and play?"

"Yeah!" Carla chuckled at her children's childishness.

I love my brother, Eren. He's such a hothead and can be kind of a jerk sometimes, though.


Aria sobbed as she crouched in a fatal position, three boys towering over her. "Come on, get up."

"You're such a weakling!"

"What's up with her eyes?! They're so creepy."

"Hey!" an enraged voice screamed. The boys turned to see a furious Eren charge towards them.

"Heh, look it's Eren! He thinks he can beat us with those scrawny arms of his!" Eren ran and threw punches and kicks that they easily returned with their own. Eren was obviously overpowered, but he didn't seem to care. He continued to fight until the boys finally left. He panted before running over to Aria.

"Are you alright, Aria?" he asked worriedly. She nodded then sniffled. Eren took her in his arms and let her cry. "I'll always protect you Aria."

Whenever I was bullied, Eren would always come to help me. Even though it was painfully obvious that he wouldn't win, he never gave up.


Eren and Aria knocked on the door and a man opened it. He scowled. "How the hell did you get here?!" They both looked down.

"We just got lost and w-wanted to find shelter." The man turned back to his friend that gave him a signal. He nodded and turned back with a smile.

"Now, kids shouldn't be walking alone in the forest. There are scary wolves out there. But it's fine now. Just come with me and-" He didn't finish his sentence, for Eren had stabbed him in the heart. Aria flinched slightly at Eren's unhesitant move.

"Thanks, mister. I understand. Now… Die, asshole!"

"No way!" The two mysteriously closed the door. The other man quickly went out in the hall to look for them. But as he walked out, Aria slashed his neck with a long blade. The third and only other one in the room backed away. Eren charged and stabbed him with a long spear.

"Die, you bastard! This is what you guys get! Don't ever stand up again!" Aria stood behind him.

"Onii-chan, that's enough!" He finally stopped and panted. The girl, Mikasa, watched with blank eyes. They released her from the ropes around her wrists.

"I'm Eren and this is my sister, Aria. We're Doctor Jaeger's kids. You're Mikasa, right? We went to your house for a check-up." Then she said something that made the siblings' blood run cold.

"…There were four of them." They turned as they heard a clatter and saw the fourth man standing behind them. Eren lunged for the knife, but was kicked away. The man grabbed the two and placed them in a chokehold.

"Fight!" Eren managed to say.

"Eh?"

"Fight," Aria repeated. "If you lose, you die."

"If you win, you live."

"IF YOU DON'T FIGHT, YOU CAN'T WIN!" they screamed in unison. Mikasa shakily grabbed the knife.

"B-but… I can't do… something like that." Then she felt a new emotion rise within her. She suddenly stopped shaking. She ran forward with a cry.

The Military Police checked the damage. "They were killed by those three children."

"Seriously?"

The three kids stood outside. Eren and Aria stood in front of their father. "What were you two thinking?!" Eren and Grisha started to yell at each other while Aria looked at her feet.

"We just wanted to save her," Eren said with tears in his eyes. Grisha sighed then turned to Mikasa.

"Do you remember me? We met a few times."

"…Doctor Jaeger, where should I go from here… I'm so cold…" Eren and Aria glanced at each other before walking up to her. Eren wrapped a scarf around her head while Aria placed fake leather gloves, which were open at the fingers, on her hands.

"Here, now you're not cold, right?"

"With these, you'll always be warm." Mikasa stared, wide-eyed before nodding.

"Mikasa, come live with us. You've been through a lot. You need plenty of rest." She looked at the two.

"What is it?" Eren asked while Aria tilted her head. They each grabbed one of her hands.

"Come on, Mikasa-chan," Aria said. "Let's go back to our home." Tears ran down Mikasa's face before nodding.

"Let's go home…"

That was the first time I, or any of us, killed someone. It was also the day when I got a new friend.


"Mom!" Eren and Aria screamed in horror as they watched their own mother be eaten in front of them.

A Titan that was over 50 meters tall had broken the wall that day. I lost my beloved mother and never saw my father. Eren, Mikasa, Armin, and I safely escaped. That was also the last day that I called Eren, Onii-chan, with a few exceptions.


"I, Keith Shadis, am your instructor! Will you all become Titan food?! Or become glorious soldiers that defend mankind?! I will judge you!" Aria stood with Eren next to her, her eyes a stunning sea-green that shined with confidence.

That was the day that I decided that I wanted to save humanity, alongside my brother, Mikasa, and Armin.


"Tch, stubborn brat," a short man grumbled.

"Corporal Levi, I don't care what you say! I'll love you no matter what and you can't do anything abou-" Aria was cut off as Levi grabbed her by the arm and slammed his lips to her own.

That was when I admitted my love for a harsh and stubborn midget corporal.


"Hey, Aria, we'll always be together right?"

"Of course, Eren. You're my brother."

"Aria, promise me that you'll always help me protect Eren."

"Who do you think I am, Mikasa? I won't let anyone hurt a hair on my brother."

"Arianna, will you do me a favor? No matter how bad the situation, please be there to support me and have my back."

"Duh, Annie. That's what friends are for!"

"Oi, brat… You better always be by my side. You're mine and no one else's."

"I will, Levi. I love you."

I made so many promises… that I just couldn't keep…


This is the story of me, Arianna Jaeger. My friends. My family. The love of my life. My tears, my laughs… And all of my broken promises.


AUTHOR'S NOTE: How was it? If you liked it, FOLLOW, FAVORITE, AND REVIEW! If you like my writing, please check out my other stories.

Rulers of the Underworld LEVI/OC (Shingeki no Kyojin/Attack on Titan Fanfic)

Dreams of Despair TOGAMI/OC (Dangan Ronpa Fanfic)

My Small World SHIKI/OC/ICHIJOU (Vampire Knight Fanfic)

Revenge is a Dish Best Served OC/? (Fullmetal Alchemist Fanfic)

Polar Opposites OC/? (Prince of Tennis Fanfic)

Psychotic Beauty ATOBE/OC (Prince of Tennis Fanfic)

P.S. I Hate U KIRIHARA/OC (Prince of Tennis Fanfic)

Caged FEM!ATOBE/? (Prince of Tennis Fanfic)

No Regrets OC/? (Prince of Tennis Fanfic)

Also, these are Aria's eye colors depending on her mood.

Silver: Scared

Black: Blank, emotionless

Purple: Excited, happy

Blue: Sad, depressed

Green: Envious

Sea-green: Normal

Yellow: Pained (Physically, Emotionally, Mentally)

Orange: Angry

Pink: Shy, flustered, embarrassed

Red: ?

The color is deeper the more she feels that emotion. Sometimes, she may have specks of one color within a main color, colors mixed together, or just one color. The deeper and more of the color, the stronger she feels that mood.