Attack on Titan is an anime released in 2013.
is a Japanese manga series written and illustrated by Hajime Isayama . The series began in Kodansha 's Bessatsu Shōnen Magazine on September 9 , 2009 , and has been collected into 22 tankōbon volumes as of April 2017 . An anime adaptation of the Junior High spin-off manga , produced by Production I.G , began airing in October 2015 .