Attack on Titan is a popular manga and anime series written by Hajime Isayama. The franchise has become a cultural phenomenon since its introduction and has become one of the bestselling manga series of all time. Attack on Titan revolves around a world where giant man-eating creatures called Titans force humanity to live behind walls for safety. Eren Yeager sets his sights on exterminating the Titans after losing his home to them. Expanding beyond the iconic manga and anime series, Attack on Titan has been extremely successful in the merchandising world as well.