2. That Day - The Fall of Shiganshina (2)

Complete story — includes the ending

Hannes apologizes to Eren for being unable to save Carla. He is able to escape to the inner Wall Maria with Eren and Mikasa but the Armored Titan breaches that Wall as well, causing those inside to retreat even further, behind Wall Rose. Eren has a strange dream in which his grieving father forcefully gives him an injection and a key. Angry and bitter, Eren grows disgusted with the people of Wall Rose when they show disdain for sharing their food and resources with the refugees. During the next year, as a food shortage becomes apparent, the government sends about 250,000 refugees, 20% of the populace, to fight to reclaim Wall Maria, only to be wiped out by the Titans. Eren vows to eradicate the Titans and joins the army; Mikasa and his other best friend Armin Arlert join with him.