Attack On Titans ( Shingeki no Kyojin )

For over a century, humans have been living in settlements surrounded by gigantic walls, which prevent the Titans, giant humanoid creatures who eat humans, from entering. Young Eren Yeager wishes to see the outside world by joining the Recon Corps, as he likens living in the cities to livestock. Despite this, his foster sister Mikasa Ackerman and their mother Carla are against him in joining the Corps. Even after seeing the Recon Corps returning home with large casualties, Eren expresses his interest to join which impresses his father Dr. Grisha Yeager. After Eren and Mikasa save their friend Armin Arlert from bullies due to his views that the walls will not protect them forever, a Colossus Titan much taller than the walls suddenly appears and kicks down the gate into the District of Shiganshina, allowing smaller Titans to enter. As the city erupts into mass panic, Eren and Mikasa head to their home in a desperate attempt to save their mother who becomes trapped under their collapsed house by the debris falling from the wall. Despite Carla begging her children to leave her and save themselves, they refuse until City Guard Hannes arrives and takes the children away against Eren's wishes. As Hannes carries them away, Eren, picked up from behind the scenes, watches in horror as a Titan kills and eats their mother. Hannes apologizes to Eren for not saving his mother and admits he was afraid of the Titan and that both he and Mikasa are still weak children. The people of Shiganshina escape to the inner Wall Maria while the soldiers try to hold off the Titans. Fearing the Titans might advance further, the soldiers order to close the gate to Wall Maria despite Hannes' protest that there are still refugees outside. However, an Armored Titan rams into the gate, allowing the Titans to enter the lands of Wall Maria. As a result of the breach, the government orders all survivors from Wall Maria to evacuate into Wall Rosé. Some time later, Eren has a strange dream in which his grieving father forcefully gives him an injection and his key before being woken up by Mikasa. Eren grows disgusted with the people of Wall Rosé as the latter do not like sharing their food with the refugees. During the next year, as a food shortage becomes apparent, the government orders the refugees to work at the farms or fight to reclaim Wall Maria, which results in hundreds of thousands of deaths including Armin's grandfather. Eren vows revenge for what the Titans did and resolves to kill them by joining the Army along with Mikasa and Armin. A year later, Eren, Mikasa, Armin, and many young recruits begin their training.