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Attack on Titan
Attack on Titan is a Japanese manga series written and illustrated by Hajime Isayama. It is set in a world where humanity is forced to live in cities surrounded by three enormous walls that protect them from gigantic man-eating humanoids referred to as Titans; the story follows Eren Yeager, who vows to exterminate the Titans after they bring about the destruction of his hometown and the death of his mother. (from Wikipedia)

The Attack Titan could receive memories from both past and future inheritors of the Titan. Guided by these memories, it always moved ahead, fighting for freedom.