OVERVIEW

When Levi Ackerman entered Hanji Zoe's laboratory to bring a sample of Eren's titan form's hardening remains, he curiously entered a glass door but he found himself in a completely different world. Canon Universe/Alternate Universe

ABOUT

Post-Expedition to Shiganshina and the retake of Wall Maria (CU/AU); in which ㅡ

Eren Jaeger already mastered his titan form's hardening ability,

Dead Survey Corps members and canonical characters are still dead,

Historia Reiss is queen,

& Levi Ackerman and the eight remaining Survey Corps survivors finally went to the ocean.

WARNINGS

Contains spoilers

Reincarnation

Swearing (which is a normal thing because Levi, you know)

DISCLAIMER

All canonical characters and references of Shingeki no Kyojin are owned by Isayama Hajime.

CHAPTER ONE

"Good morning, Captain!"

She would never get tired of greeting him every day. Before going to work, she would always take time to have a short chat with him. It has been her daily morning routine.

She tucked her long fringe behind one ear to see him better. "I hope to see you in my dream again tonight." A faint smile suddenly curved her lips while staring at him. "It feels so real."

An impatient knock distracted her from recalling her seemingly real dream. "Petra, we're gonna be late!" Someone called on the other side of the door.

She quickly looked to where the voice came and replied, "Five seconds, Nifa!" Then, she turned back and said, "I have to go, Corporal. Don't worry, I won't mess up today."

She chuckled sheepishly with a sudden inward cringe. She saluted before the wall and leaved her bedroom. When she reached the living room, she saw Nifa standing by the wooden double doors.

"Come on." she impatiently waved a hand, gesturing her to hurry up. They still have to walk through the long corridors and aisles by the foyer like the usual.

"Alright, let's go." Petra said after grabbing her handbag and keys.

They made sure that the doors and windows were tightly locked before leaving. They have acquired slight feelings of paranoia on thieves since three men broke inside last month. When everything was sure safe, they started walking across the grand foyer, carefully keeping their heels tight downstairs going to the aisle near the garden, and finally reaching the area where they had always been parking their carsㅡthe garage located in the back.

Their apartment was an old manor owned by an old veteran couple who was now living far from the capital. They were only paying for water and electricity bills because the couple just wanted some people to live there rather than be dwelled by ghosts. At first, they wanted to decline the offer but after some tough decisions they decided to grab the opportunity. Unlike Nifa, Petra took a year to adjust before she finally realized that the apartment they found was an extraordinary house of two among the few soldiers who survived the world war.

"Are you talking to your military painting boyfriend again?" Nifa asked with a slight scowl on her face.

Petra chuckled as they were walking together on the garage. "Always."

Nifa snorted. "Isn't he a bit stiff to talk with?"

"He is but it doesn't matter. He never complains on my stories." she replied while cheerfully playing the car key on her index finger as she headed towards her white car.

"Of course he won't. Try removing the glass that you put on the frame, you might hear him speak." Nifa said sarcastically. "Your three-year delusion is creeping me out." she added, walked ahead and jabbed the key on her black car. "See you on my office later."

Petra faltered before opening the driver's door and looked at her, blinking. "Why?" she asked curiously.

"You need counseling." Nifa answered with a grin.

Petra opened the driver's door and with a small laugh, she said, "I thought dual relationship is not allowed in counseling."

Nifa just shook her head with a curve on her lips and went inside her car. She was not against her friend's admiration; she was just finding it weird for a young university physician to talk and fangirl so bad over a painting every day. It has been three years since they moved there and though she really found it odd, she decided to just ride on her gig anyway.

"Floch, have you seen Hanji-san?" Eren asked casually when he caught sight of his comrade on the corridor. He halted behind Floch and took a swift glance by the window, hoping to see her outside the headquarters.

Floch turned to face him. "I also can't find her since morning."

"How about Levi Heichou?" Eren's jade orbs were expectantly waiting for a more reliable answer.

"I noticed him cleaning his old squad's barracks earlier but he's not around this afternoon either." Floched answered, an exasperated sigh followed his response.

"I see." There was a hint of disappointment on Eren's face.

"Why are you looking for them, Eren?" Floch asked suspiciously.

Eren shrugged. "I just…need to tell them something important."

"I see." Floch breathed and clapped a hand on Eren's shoulder before leaving.

Eren sighed and leaned his back on the wall. His mind was boggled by some things he couldn't tell to Armin and Mikasa. He considered to report it to his superiors but they were not around, strangely. Before his mind could fly further, he was distracted by Sasha and Connie's laugh outside the headquarters, it looked like they were teasing Jean, so he started to walk towards the exit to join them. But before reaching the door, the next thing that caught his attention was the sudden crash that he heard from the distanceーHanji's laboratory.

"Shit."

Levi swore under his breath after unexpectedly crashing from something like a hard, transparent, thin wall. Scattered pieces of glass gave him tiny cuts in his arms when he covered his face from his sudden fall. His hand pressed a soft, comfortable surface that he has dived in; for a short while he figured out that it's a bedㅡtoo huge and more comfortable than those in the barracks. Behind him was a framed painting of the sacred wall where he thought the broken glass came from. A realization hit him that gave an idea of what the hard, transparent, thin wall wasㅡa glass frame. He stared at the painting and noticed that there was missing on the perspective. He suddenly recalled something that brought a big question mark in his head; he came out of that big, glass-framed painting and he didn't know how it happened. He cursed again.

When he looked around him, he caught sight of his reflectionーit's a clear, wide mirror across the bed where he was sitting. Settled on top of the cabinet beside the mirror were stuff that looked like cosmetics that he used to see on every female soldiers' barracks (except Hanji's) when he was on cleaning duty. He winced on the items for a moment, reminding himself of someone, then shifted his sight on a small picture frame hanging on the wall. He walked towards it to see better and a curse rolled out of his tongue for the third time when he stared on the two people posed cheerfully.

"Where the hell am I?" he asked himself with a harried look on his face. "If this is Eldia or Marley, I'm going to kick their damn asses off."

He continuously searched the room and found some piles of paper on a small table near the bed, an empty mug of coffee settled beside it. Before he could get and read what has been written on the first page, a thin, hand-sized rectangular thing on top of it almost gave him a mini-heart attack. He realized he was not wearing his 3D Maneuver Gear so he would use hand combat if needed and prepared himself for something dangerous; he immediately stepped backwards. The thing just kept on producing an odd sound and an image appeared on the surface. It has something that was written on it but he couldn't read it. It's different from their alphabet. The face on the image behind the letters was very familiar.

"What is that thing?" he asked as if talking to someone while glowering at the thing from the distance that was about a meter away from him.

After several seconds, the odd sound stopped and the image on the surface faded to black. He sighed and looked back at the painting near him.

"I need to get back."