Survey Corps (attack on Titan OC book)

Over 100 Years before the beginning of the story, Giant humanoid creatures called Titans suddenly appeared and nearly wiped out humanity, devouring them without remorse or Reason. What remains of humanity now resides within three enormous concentric walls: The outermost is wall Maria, The middle wall is wall Rose, and the innermost is wall Sheena. Inside these walls, Humanity has lived in uneasy peace for one hundred years: many people growing up without ever having seen a Titan. This all changes when one day, when a giant 60-meter (200ft) tall colossus titan mysteriously appears after a strike of lightning and breaches the outer wall of the Shiganshina district, a town at Wall Maria, allowing the smaller Titans to invade the district. An Armored Titan smashes clean through Wall Maria, forcing mankind to abandon the land between Wall Maria and Wall Rose, evacuating the remaining population into the inner districts. The sudden influx of population causes turmoil and famine. The Titans are giant humanoid figures about 3-15 meters (10-50 ft) tall and are usually masculine in body structure but lack reproductive organs. Although they do not appear to need food, they instinctively attack and eat humans on sight; it is mentioned that they derive their energy from sunlight. In addition the Titans also do not have a proper digestive tract; once they have eaten their fill of human prey, titans will vomit their meal into large, slimy balls, derisively referred to as "hairballs". Finally, their skin is tough and difficult to penetrate, and they regenerate quickly from injuries, save for a weak spot at the nape of their neck. Combating the titans is the military, which is divided into three branches. the survey corps which goes out into titan territory to try to reclaim the land. The second branch is the garrison Regiment, Which guards the walls and the civilian populace. The third branch is the Military Police Brigade, Who guards the royal family.

THIS IS A OC STORY