Attack on Titan
The series follows the story of Eren Yeager, a boy who lives in the town of Shiganshina, and his friends Mikasa Ackerman, and Armin Arlert. They live in a civilization surrounded by three circular walls. Over one hundred years ago, humanity was driven to the brink of extinction after the appearance of humanoid giants called Titans, who attack and eat humans on sight. According to what is known, the civilization within the walls is the last surviving remainder of humanity. Their civilization is surrounded by three circular walls called Wall Maria, Wall Rose, and Wall Sina. In the year 845, the outermost wall (Wall Maria) is breached by two new types of Titans, the Colossal Titan and the Armored Titan. This leads other titans to infiltrate the outermost areas of civilization and begin slaughtering its inhabitants. During this incident, Eren's mother is eaten by a Titan, and Eren swears revenge against all Titans. Eren enlists in the military and is also accompanied by his childhood friends Mikasa and Armin.