Attack on Titan (進撃の巨人 Shingeki no Kyojin?, lit. Advancing Giant(s)) is a manga series written and illustrated by Hajime Isayama. It was first published in September 2009 and is serialized in Kodansha’s Bessatsu Shōnen Magazine. Currently, it is on its 30th volume. An official English version by Kodansha Comics began serialization in the United States in June 2012. As of October 2013, it was also made available online on Crunchyroll’s manga platform, where it is consistently scheduled to be published on the same day as the Japanese release (“simulpub”). Since April 2016, Amazon simulpubs the series as well on its comiXology and Kindle Store platforms.“On that day, mankind received a grim reminder. We lived in fear of the Titans, and were disgraced to live in these cages we called walls.” Over a century ago, terror rained upon humanity when monstrous giants named “titans” appeared and mercilessly devoured humans. With no other choice, mankind built large walls to barricade themselves safely in and keep the Titans out. Decades later, Eren Yeager is a boy that has grown up within the walls only knowing peace. He and his friends, Mikasa and Armin, innocently dream of exploring the vast world outside the walls. But none except the military have ever left their safe haven — until the day comes when a colossal titan breaks through the wall, and humanity’s peace is shattered to ruins once again.