文档介绍：Attack on titan
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A Japanese manga
The series began serialization(连载)on 2009
The animation produced between April and September 2013
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During the long history of human, men were once getting close to extinction（绝种） due to the predation(捕食)from Titans. (巨人)
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The wall is built to keeps people away from Titans
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as the price of Peace，people living in peace like cattles in cage.
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Titan is generally 3 to 15 meters high, the super Titan can even reach 60 meters high, and the human is only about 2 meters. Titan's weakness in the back of the neck of a size of 1 square metres of meat. The average killing a Titan requires 10 human.
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But one day Titans that ruined the walls appeared.
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Eren Jaeger
Eren Jaeger
male lead
after that disaster，he starts his journey for revenge against the Titans
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