"Attack on Titan" (Japanese: 進撃の巨人, Hepburn: Shingeki no Kyojin, lit. "The Attack Titan") is a Japanese manga and anime series created by Hajime Isayama. The story is set in a fantasy world where humanity resides within territories enclosed by three colossal walls that shield them from enormous humanoid creatures known as Titans. The anime follows a group of teenagers living inside cities protected by these three massive walls. These walls are humanity's last line of defense against gigantic humanoid beings called "Titans" who devour people seemingly without reason. One day, a colossal Titan breaches the outermost wall, resulting in thousands of casualties, including the mother of Eren Yeager, our protagonist. The series then chronicles Eren's vow to join the military and eradicate every Titan he encounters. "Attack on Titan" delves into key plot points, including: Civilization within the Walls: Part of the story unfolds within a civilization enclosed by colossal walls, constructed by humans to safeguard against Titan attacks. People within these walls live relatively peaceful lives, but their contact with the outside world is strictly controlled. Titan Threat: Various types of Titans exist in the world, posing a grave threat beyond the walls. These Titans are not only colossal but also possess devastating power, often leading to human casualties upon their appearance. The Story of the Yeager Family: One of the main characters, Eren Yeager, hails from a family that has suffered personal losses due to Titan incursions. His mother's death during a Titan attack drives his determination to become a soldier. Mikasa Ackerman, his adopted sister, is another significant character with a mysterious family background. Scout Regiment: The story revolves around the Scout Regiment, a group of soldiers who are the only ones capable of engaging Titans in combat and conducting reconnaissance missions. Their lives are fraught with danger and sacrifice as they defend humanity. The World's Secrets: The narrative gradually unveils the world's secrets, including the true origin of the Titans, the purpose of the walls, and other startling revelations. Humanity's Struggle Against Titans: The story is replete with intense battle sequences that illustrate humanity's life-and-death struggle against Titans to protect their homeland. "Attack on Titan" is a manga and anime series filled with suspense, action, and mystery. It also explores complex character development and delves into themes such as survival, freedom, and sacrifice. It has garnered immense popularity among audiences worldwide.