"It's time to bring her back to the headquarters. They'll be safer here and we need her skills back."
"I will write the letter now!"

"Miss (f/n)! Miss (f/n)!" a shout echoed loudly.
The door opened, revealing a (e/c) eyed woman looking down at the exhausted messenger, watching him catch his breath.
"Jack..." she muttered. "Did anything happen?" she inquired, slightly raising an eyebrow.
"I have... a letter for you..." he arfed, before taking a deep breath and blurting out: "It has the Survey Corps' seal, I thought it might be something important!"
(E/c) eyes widened and (s/c) hands snatched the document away from the messenger. The soldiers had only returned from an expedition a couple of days ago; had something happened? No, it couldn't be, he would never fall under those beasts...
Hurriedly, the cover was disposed of and the paper content neatly unfolded. An eager gaze razored over the familiar handwriting:

'Squad Leader (f/n),
I, Erwin Smith, Commander of the Recon Corps, hereby announce that you are to return to the headquarters once possible. The Corps require your services once more.
P.S.: Please, try to hurry. he's extremely worried and that's driving me mad.'

"So... it's finally time to return..." she hummed, the small smile that tugged at her lips turning into a fully bloomed grin. "OH, THANK YOU, THANK YOU, THANK YOU!" she beamed, hugging the messenger before running back into the house.

~~~~~~~~~~Headquarters~~~~~~~~~~

"What awe you stawing at, damn bwats?!" a cute childish voice reprimanded.
Googly eyes stared at the kid in awe.
"See?! I told you it really was the corporal!" Sasha noted.
"I see it, but I don't believe it..." muttered Jean; Connie and Reiner nodded in agreement.
In front of them stood no other than the humanity's strongest soldier, but something was off... the corporal was small, well, smaller than usual; he was a child.
Looking him over once again, it just had to be him... The eyes, the hair, the scowl, the voive, he was even wearing the military gear... There was no mistake.
"Do you think squad leader Hanji experimented on him again?" Connie inquired.
"Maybe..." muttered Reiner.
"Why isn't he chasing her off then?" remarked Jean.
"Maybe he lost her! No wonder, with those cute tiny legs!" cooed the only female in the group.
"Oi, bwats!" barked the small corporal, puffing his cheeks up a little. "I'm not cute! Cleaning duty fow a week!"
"NOW!" yelled the child, sitting down to supervise the four cadets as they began cleaning the floor and walls.

"What the hell ish thish?!" echoed a cute girly voice, sounding extremely annoyed. "The shtablesh are absholutely filthy!"
A tiny figure came into sight…
"What the…!?" Eren blinked as the new presence approached.
"CORPORAL?!" a choir of voices resounded in astonishment.
A small girl stood in front of them, a small copy of the Lance Corporal himself (if he was a girl)… Same eyes, same hair (but longer), same tone; hell, she even wore the military gear!
"Squad Leader Hanji…?" Christa mumbled.
"Most likely." Mikasa agreed.
"But she's adorable!" cooed Ymir. "Don't you think, Christa?"
"A-ah!" the blond nodded.
"Shtop blabbering and get to work, shtupid bratsh!" growled the little girl.
"B-but we already..." whined the only male in the group.
"You shay thish ish clean? NO! Thish place ish grosh and filthy! Don't you know how to clean properly? Do it again!" demanded the child.
"But..." tried Eren once again.
"Did I shtutter, cadet?"
"No..."
"Then get to cleaning!"
"Yes, heichou..." grumbled a choir of defeated voices.

Walking down the hallway, Armin found a child crying on a corner. Worried, the blond approached carefully so as to not startle the kid.
"Hey, is everything alright?" he asked in a soothing tone. "Are you lost?"
The small boy sobbed one more time before looking up at the newcomer. The child's features seemed familiar, but the cadet couldn't quite remember where from... The boy possessed sharp (e/c) eyes and (h/c) short flawlessly-combed-back hair.
Warily, the child nodded his head.
"Hm... I see..." mused the blond, smiling lightly. "My name's Armin, what's yours?"
"Erwin..."
"Erwin, you say...?" chuckled the blond out of surprise. "Tell me, how about you come with me to the library, so that after I help you find your parents?"
"YES, I love books!" the boy nodded excitedly.

Alarmed, (f/n) reached her bestfriend's office and knocked franctically on the door. A faint 'come in' was heard from the other side.
"Hanji!" she cried out, violently throwing the door open.
"Oh, (f/n), you're here already!" chirped the older woman, raising her head from her drawn titans, only to notice her friend's panicked expression. "What's wrong?"
"They vanished! I looked away from the second and on the next they weren't there! I looked everywhere, but I couldn't find them anywhere!" blurted the younger, violently waving her arms around.
"Oi, (f/n), calm down!" Hanji chuckled, dropping her hands upon the shorter female's shoulders in order to catch her attention. "They can't have gotten far. Come on, I'll help you search for them!"

-Time Skip-

"There! Every single corridor of the upper floor, shining brighter than the sun itself!" declared Jean, slumping down beside his exhausted comrades. "Are you happy? Can we stop now...?"
"No!" snapped the child. "I'm hungry! I want to eat!"
One more whine left the cadets' lips.
"You!" demanded the tiny corporal, pointing at the only female present. "Cawy me, it's time fow lunch!"
"Yes, sir..."

"Stables shining, bathrooms immaculated..." Eren breathed out, enjoying the peace that would last no more than a second.
"I'm hungry! I want food!" cried out the little girl.
Out of a sudden, Christa got up and picked up the child.
"Then let's take you to have lunch now, okay?" suggested the blonde with a sweet voice.

"Armin...!" the little boy called, tugging on the soldier's sleeve.
"What is it, Erwin?"
"I'm hungry... Can we go have lunch now?" pleaded the child.
"Sure!" chuckled the cadet, getting up and taking Erwin's hand in his. "Let's go then!"

Not in the stables, not in the bathrooms, not in the rooms, not in the training grounds, not anywhere...
"My babies..." whispered (f/n), sobbing heavily into her bestfriend's shoulder.
"Calm down, sweetie!" shushed Hanji. "What if we pay a visit to the mess hall? It is lunch time after all, maybe they're there! Eh?" urged the brunette.
Exasperated, the (h/c) haired female nodded weakly.

"Where's everyone?" questioned the commander, noticing half of the cadets missing.
"I don't fucking care." growled the corporal.
Minutes passed, during which time the trio spoke about the upcoming expedition.
"A strange smell lingers in the air..." Mike noted as the 104th trainee squad members began to fill in the rest of the mess hall.
dumbfounded expressions found their way to the cadets' faces as, one by one, they noticed the adult Lance Corporal sitting right beside the Commander; although, the murderous glare soon forced them to look away.
Having finished eating, Levi got up, ready to resume to his paperwork.

At four different doorsteps, simultaneously, four distinct individuals appeared... Four pairs of eyes fell upon the same person... Four different voices echoed loudly in the mess hall...
"LEVI!"/"DADDY!"/"PAPA!"/"DAD!"
Startling everyone, a woman and three children took off running towards the same spot.
Lacking the necessary time to react, the humanity's strongest soldier was tackled to the ground with a loud thud and a huff.
"What the actual f-...?"
"I missed you so much!" (f/n) muttered, nuzzling her cheek on the man's strong chest.
"WE MISSED YOU, PAPA!" the three children cried out, clinging to the corporal's torso for dear life.
A soft smile found it's way to the man's face, as his arms surrounded the four, hugging them as close as he could.
"I missed you too, brats..."

~~~~~~~~~~
"I never thought the corporal would have a family!" Eren mused.
"I can't believe I was bossed around by a kid..." Jean flinched.

"HEY! I heawd that, thwee months cleaning duty!" Farlan growled.
"NO WAY! It shoulb be shtablesh duty!" argued his twin sister, Isabel.
"WHAT?! YOU CAN FORGET ABOUT IT, KIDS! I AIN'T DOING IT!" horse-face yelled.
"Kirstein!" warned Levi. "You heard them!"

"HEY, WHAT ABOUT ME? AUNTY HANJI WANTS A HUG TOO!"