A/N At the bottom!

Prologue

In the year 2244 alien creatures attacked earth. The Military did their best but after 64 days, had only managed to destroy a certain amount of the aliens. By day 232 they believed all the aliens on Earth to be dead. Immediately following into 2245 the top World Power Nations came together to create Three Military Branches.

The Survey Corps; the branch created for Space Development and to train select special people to join their ranks. Only a limited amount of people were selected, those with perfect agility, amazing crisis response, and perfect mind condition. The Survey Corps couldn't have anybody less than perfect amongst their ranks. They were the ones who traveled to the Mars Training Center to perfect their movements with the 3DMG, to perfect their strikes on the aliens. These men were top of the game and if they returned to Earth, they would be seen as nothing but heroes.

The Military Police; created to seek out and transport the select members for the Survey Corps. They perform the tests on those who are aged 14-18 as they are the best fit typically. Anybody beyond that age group would not be given a second glance. Everybody is tested regardless of social standing.

The Garrison; created to spread across the Earth and protect it with their very own lives. Trained to hunt and kill the aliens, but are not on par with the Survey Corps members. They are allowed to sign up no matter the age, social standing or even location, anybody who joins must pass through the 10 week long training camp or die trying but once you're in you either make it or don't go home.

All of this was completed by the year 2300, the same year that the 3DMG were perfected. Though the Survey Corps explored the near by planets, they seemingly didn't run into anymore aliens.

By the year 2320 the aliens had been named Titans. The creatures had human like structures but with various deformities. Often times, these creatures could run at speeds never seen before or jump to heights unattainable without technology. But nonetheless, these Titans were constantly eating any human they could get their hands on but seemingly had no purpose to their motives and no ability to communicate.

In 2523, light traveling was nearly perfected. Ships were now able to travel at light speed, though it wasn't perfected with humans inside. Soon they would be able to travel farther than before and gain better knowledge while traveling at several Light Years but only aging minutes during the process. By the year 2610, the light traveling was perfected with humans inside the ships as well.

By the year 2677 the Titan's became scarce once again, many Survey Corps members being sent home and new members being trained simply to keep up with the idea of being safe regardless. The Garrison squad began to slack off more and more and the Military Police were seen as high up pricks who got more than they deserved. Then, in the year 2741 something unexpected happened. One of the Survey Corps members was attacked by a Titan, her arms being ripped off in the process, neighboring members about to rush to her aid when the girl transformed into a Titan herself. She went into a frenzy and with a single screech, attracted more Titans to their location.

Taking down the transformed girl, they found her within the Titan's neck and removed her. Taking her back to base on Mars, the scientists there performed several tests. Within three years, they had discovered the Titan Gene that many humans carried in their DNA and even discovered a way to provoke it; Titan Spit. After this incident, more and more Titans began to attack once again, as if waking up the Titan Gene had brought the creatures back.

This time, instead of collecting those who met the "perfect" standard for their ranks, the Military Police collected human's with the Titan Gene. The test was performed on those between the ages of 14-16 only, 15 being the primary age to take the test at. If you had the Gene you were recruited regardless of you wanting to join or not. By the year 2800 the Survey Corps had managed to perfect their Titan Training and had even begun to explore the possibilities of having genetically altered Titan Shifters. In the Year 2820 a scientist who went by the name of "Mr. Hange" began these tests. Taking only those who offered to help. By the year 2840 his "Protege" had taken over, Zoe Hange, whom was raised to be as enthusiastic towards Titan's as could be. Zoe took over once Mr. Hange retired. Zoe, who had joined the Survey Corps around the same time Erwin Smith had joined, remained close friends even as Erwin was named the Commander after his father. In the year 2844 they perfected the ability to create a Titan form for a regular non Titan Gene human and for the first time in 100 years, a non Titan Shifter was inducted into the Survey Corps.

That's where Levi's story begins.

A/N: Okay this is a little cross over between SNK and The Voice of a Distant Star. I've got the basic idea of both animes mixed together to create a slightly my own story idea. If you'd like you can read this either at my tumblr account which is stultusx and the tag is (Voices of the Stars) or at my AO3 account which is delictorx. Feel free to leave some suggestions or anything you'd like to see in this story. But for now this is just the prologue and the back story info! I'll update again on Friday~