"Attack on Titan Part 1 – Guren no Yumiya" introduces a world where humanity is on the brink of extinction, confined within massive walls to protect themselves from the Titans, giant humanoid creatures that devour humans without reason. The story begins in Shiganshina District, a town within Wall Maria, where Eren Yeager, his adoptive sister Mikasa Ackerman, and their friend Armin Arlert live relatively peaceful lives. This peace is shattered when a colossal Titan breaches the outer wall, allowing smaller Titans to invade and destroy the district. During the chaos, Eren witnesses his mother being eaten by a Titan, fueling his deep-seated hatred for the creatures and his desire to eradicate them. Following the fall of Shiganshina, humanity retreats further behind Wall Rose, and Eren, Mikasa, and Armin join the military to fight against the Titans. Eren’s determination to avenge his mother and protect humanity drives him to excel in training, though his impulsive nature often puts him at odds with others. Mikasa, possessing exceptional combat skills and a strong protective instinct toward Eren, becomes one of the top cadets. Armin, though physically weaker, demonstrates remarkable strategic thinking and intelligence. The narrative takes a dramatic turn when Eren discovers he possesses the ability to transform into a Titan, a power that becomes both a weapon and a source of fear for humanity. This revelation occurs during a battle where Eren sacrifices himself to save his comrades, only to emerge as a Titan and fight against the invading creatures. His transformation sparks intense debate among the military and civilians, with some viewing him as a potential savior and others as a dangerous threat. The military ultimately decides to use Eren’s Titan form to reclaim lost territory, leading to a high-stakes mission to seal the breach in Wall Rose. The series explores themes of survival, sacrifice, and the moral complexities of war, as humanity grapples with the existential threat posed by the Titans. Key characters include Commander Erwin Smith, whose leadership and strategic brilliance guide the military’s efforts; Captain Levi Ackerman, a skilled and ruthless soldier who becomes a mentor to Eren; and Annie Leonhart, a mysterious and highly capable cadet whose true motives remain unclear. The tension between humanity’s desperation to survive and the ethical dilemmas of using Eren’s Titan powers forms a central conflict, setting the stage for the larger narrative to unfold.