The story is set in a world where humanity lives inside cities surrounded by enormous walls; a defense against the Titans, gigantic humanoids that eat humans seemingly without reason. The plot centers on Eren Yeager, his adoptive sister Mikasa Ackerman, and their friend Armin Arlert, whose lives are changed forever after the appearance of a Colossus Titan brings about the destruction of their home town and the death of Eren's mother. Vowing revenge and to reclaim the world from the Titans, Eren and his friends join the Scout Regiment, an elite group of soldiers who fight Titans.

The season received critical acclaim for its atmosphere, story, characters, and action. Reviewers noted the harsh and brutal world depicted in the series and praised the characters for their development, although some found the portrayal of certain characters to be weak. The action sequences were also praised, with reviewers noting that they were well-choreographed, intense, and brutal.

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