Attack On Titan

Attack on Titan (進撃の巨人 Shingeki no Kyojin, lit. "Advancing Giants") 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 15 tankōbon volumes as of March 17, 2015.