Attack on Titan (Japanese: 進撃の巨人, Hepburn: Shingeki no Kyojin, lit. “The Attack Titan“) is a Japanese manga series both written and illustrated by Hajime Isayama. It is set in a fantasy world where humanity lives within territories surrounded by three enormous walls that protect them from gigantic man-eating humanoids referred to as Titans.

The series first began in Kodansha’s Bessatsu Shōnen Magazine on September 9, 2009, and it has been collected into 30 tankōbon volumes as of December 2019. Attack on Titan has become a critical and commercial success. As of December 2019, the manga has 100 million tankōbon copies in print worldwide, making it one of the best-selling manga series. It has won several awards, including the Kodansha Manga Award, Micheluzzi Awards, and Harvey Award.

The anime television adaptation, produced by Wit Studio, has also been well received by critics with the first three seasons being met with critical acclaim with praise for its story, animation, music and voice acting, and has proved to be extremely successful in Japan, U.S., Europe and Asia, thus boosting the series’ popularity. Although it also gained fame in neighboring Asian countries, political interpretations of the series caused controversies in China and South Korea.