Hello all! This my first fic for my favorite-anime-of-all-times Shingeki no Kyojin/Attack on Titan so it might not be very good but I'll do my best. To those who have read my Harry Potter stories, I know I'm awful and mean and that I should be updating my on-going stories but I just don't have any inspiration for it at the moment. I left a note on my profile that explains why.

Back to the actual fanfiction. It takes place in the future and if the story line is followed sometimes, I've changed it quite a bit, especially at the beginning. I will go back to the cannon story for a while but since the series aren't finished I'll be inventing quite a bit.

I know myself so I'm warning you now: this fic may never reach its end. I tend to have periods where I'm super motivated to write and then completely abandon it. I do however have an actual plot and a detailed idea of where I'm going so this might just my first multi-chapter story to end ^^

Warnings are the usual, I don't own anything, etc, etc...You all know it, so I'll skip.

I hope you enjoy reading and would love reviews ^^


Throughout the twentieth and twenty first century, industries polluted the environment until Earth was no longer hospitable to the human race. During the twenty second century, humanity had to face countless new diseases, most of which came from the inhalation of toxic fumes. Gradually, the air became so polluted that it was no longer possible to breathe without protection. So that one wouldn't die in a matter of minutes, humans had to wear oxygen masks at all times. Just as the second half of the twenty third century started, humanity came up with a plan to preserve what was left of it. By the time the twenty fourth century began, three cities had been built. Those gigantic buildings, whose purpose was to protect those living inside them, were built in a triangle. Sina had been built against a mountain and was the safest. Roze came next and Maria faced all dangers bravely.

People did not hesitate to abandon their homes and move inside the walls of the Three Sisters. They had been built in a tower-like shape with three floors in each city. The ground floor was the largest and the poorest. The first floor was smaller and the topmost floor was the smallest of all, as well as the richest. Each floor was divided in districts.

Social differences were never abolished and were clear in the disposition of the cities. In each city, the ground floor was dedicated to agriculture, the first was where merchants settled and the second was home to the richest people of the city. There was also a difference of population between cities. Maria was poor and the richest inhabitants of Maria were poorer than the poorest of Roze. Roze was in the middle and Sina, which was the city chosen by royalty, was at the top.

Despite the inequality, humans were glad to live in the Walls. They had a fake sky over their heads, clean water to drink and fresh air to breathe. But this came with a price. Humanity had given their freedom in order to survive, for no one could leave the Walls. The cities were Cages.

There was only a handful of people allowed to leave the Walls. They were a part of the Military Force, a group called the Survey Corp. They were soldiers and scientists who were specially equipped to leave on journeys outside the Cages in order to bring back information and data on the world outside. But it was common knowledge that not many came back from those trips, though few knew why.