Attack on Titan (Japanese: 進撃の巨人, Shingeki no Kyojin ; lit. “Advancing Giants”) is a manga series first created by Japanese author Hajime Isayama and an anime series produced by anime studio Production I.G. Set in a post-apocalyptic, medieval fortified society from an alternate history, the story follows Eren Yeager, his adopted sister Mikasa Ackerman and their friend Armin Arlert, who all enlist in the military to join the humanity’s epic battle for survival against a race of gigantic, destructive humanoids known as the Titans.