"Attack on Titan" is a popular Japanese anime and manga series created by Hajime Isayama. The story is set in a world where humanity is on the brink of extinction due to giant humanoid creatures known as Titans, who devour people. To protect themselves, humans live within enormous walled cities. The narrative follows Eren Yeager, his friends Mikasa Ackerman and Armin Arlert, as they join the military to fight against the Titans. As they uncover the truth behind the Titans and their origins, they face moral dilemmas and intense battles, exploring themes of freedom, survival, and the human condition.