Is a Japanese post-apocalyptic manga written and illustrated by Hajime Isayama. It was published in the monthly magazine Bessatsu Shonen Magazine of the Japanese publishing house Kodansha from October 2009 to April 2021. The action of the manga takes place in a fictional universe reminiscent of Europe of the XIX century, where humanity lives in territories surrounded by three huge walls that protect them from giant creatures that eat humans, called Titans.