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進撃の巨人 (Shingeki no Kyojin)
Also known as Shingeki no Kyojin, AoT, SnK
Behind three walls, humanity waits - and the Titans are already inside.
Humanity survives behind three concentric walls, sheltered from the Titans: enormous humanoid creatures that devour people for no discernible reason. Eren Yeager, his adopted sister Mikasa Ackerman and their bookish friend Armin Arlert live an ordinary life in the outermost ring until a Titan of impossible size breaches the gate, unleashing a massacre that destroys Eren's home and family. Years later the three enlist as cadets, mastering the vertical maneuvering equipment that lets soldiers fight airborne against an enemy vastly stronger than they are. When the walls are tested again, Eren discovers something about himself that makes him both humanity's brightest hope and a threat the military cannot decide whether to shield or execute. The first season follows the trio's brutal education in war, sacrifice and the politics of survival.
A remnant of humanity lives walled inside a ring of fortified cities, safe for a century from the man-eating Titans outside. That peace ends when a colossal Titan smashes the outer gate and smaller Titans pour through. Orphaned and consumed by rage, teenage Eren Yeager vows to kill every last one of them and joins the military, where cadets are trained to fight with grappling gear, blades and almost no margin for error.
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Episodes Episodes 1-2
After a century of peace, the Colossal Titan kicks open Wall Maria's gate and the Armored Titan smashes through, letting Titans flood Shiganshina. Eren watches his mother die in the rubble, swears vengeance on every Titan, and joins the refugee flood inside Wall Rose.
Episodes Episodes 3-4
Flashbacks follow the 104th Training Corps: Eren struggles with vertical maneuvering gear, Mikasa's protective instincts and violent past are revealed, and Armin's tactical mind emerges. Recruits including Jean, Sasha, Reiner, Annie and Bertholdt are introduced as graduation and career choices loom.
Episodes Episodes 5-13
The Colossal Titan reappears at Trost and the district is overrun. Eren is devoured saving Armin, cadets panic and die, then a mysterious Titan begins killing other Titans. Eren's shifting ability is exposed, and Armin's plan to plug the gate with a boulder decides humanity's fate.
Episodes Episodes 14-16
Eren faces a military tribunal that could have him dissected or executed until Captain Levi's brutal intervention wins him over to the Survey Corps. Assigned to Levi's elite squad at an old castle outpost, Eren trains to control his transformations under Commander Erwin's watchful planning.
Episodes Episodes 17-22
The Survey Corps rides beyond the wall in a long-range formation that conceals Erwin's real objective. An intelligent Female Titan tears through the ranks hunting Eren, forcing a trap in the Forest of Giant Trees, devastating casualties, and an agonizing choice between trusting comrades and trusting his own power.
Episodes Episodes 23-25
Erwin gambles on a plan to unmask the Female Titan inside the interior city of Stohess. Suspicion falls on a fellow cadet, and Eren must fight someone he trained beside, with a rooftop-wrecking Titan duel that ends on a revelation about the walls themselves.
Episode Episode 1
The Fall of Shiganshina
A patient, idyllic opening detonates into horror as the Colossal Titan appears above the wall. Its scale, sound design and sudden cruelty established the show's reputation instantly.
Episode Episode 5
The Struggle for Trost
Cadets meet real Titans for the first time and are slaughtered. The episode's shocking turn for Eren proved no character was safe and reset expectations for the story.
Episode Episode 13
The Struggle for Trost
The boulder plan reaches its climax with Mikasa, Armin and the garrison buying seconds. A rare triumphant payoff, capped by soldiers finally believing in Eren.
Episode Episode 14
Eve of the Counterattack
A courtroom episode that generates more tension than most battles, ending with Levi's shocking display of pragmatic violence and one of the franchise's defining introductions.
Episode Episode 22
The 57th Exterior Scouting Mission
The expedition's brutal cost lands here: elite soldiers fall, Eren's hesitation haunts him, and the Survey Corps retreats questioning whether any sacrifice meant anything.
Every episode of Attack on Titan (Season 1) with its broadcast title and air date, grouped by arc. Watch links search Crunchyroll for the series.
Every character has a full profile covering their history, abilities and relationships.
The walls keep humanity alive while keeping it ignorant and penned in like livestock. Eren's obsession with the outside world frames freedom as something worth dying for, even when safety is the alternative.
Soldiers are spent like ammunition, and commanders openly weigh lives against information. The series repeatedly asks who decides which deaths were meaningful, and whether meaning can be assigned afterward at all.
Nearly every character freezes at some point. The show treats courage not as fearlessness but as the ability to move anyway, with Armin's intellect valued as highly as raw combat skill.
The discovery that Titans can wear human faces poisons every relationship. Comrades who trained together become suspects, and institutions like the military police prove more interested in self-preservation than protection.
Wit Studio's adaptation became a global phenomenon, its soaring Linked Horizon opening and Hiroyuki Sawano's score turning the show into a pop-culture shorthand for bleak, high-stakes spectacle. It helped drive the 2010s boom in international simulcast viewing and pushed dark, brutal storytelling into mainstream shōnen. The series' fluid aerial combat, willingness to kill major characters and drip-fed mysteries set a template that later action anime and the streaming market repeatedly chased.
Content notes: Graphic violence and gore, Characters being eaten and dismembered, Death of major and child characters, Body horror, War trauma and psychological distress, Depictions of mass death.
The first series runs twenty-five episodes, broadcast from April to September 2013. Wit Studio animated it under director Tetsurō Araki, adapting roughly the first eight volumes of Hajime Isayama's manga into two connected story arcs.
Humanity shelters inside three concentric walled cities from giant humanoid Titans that devour people. After a colossal Titan breaches the outer wall, teenager Eren Yeager enlists in the military, vowing to exterminate the creatures that destroyed his hometown.
It carries a TV-MA/17+ rating. Episodes show Titans eating people, dismemberment and heavy blood, plus disturbing psychological content. Most parents and reviewers consider it unsuitable for younger children, though older teenagers generally handle its horror-tinged action fine.
Start with the 2013 television series in episode order. The compilation films simply recut the same footage, and the No Regrets OVA, a Levi prequel, is optional side material best saved until after the main season.
Both are widely praised. The Japanese cast features Yūki Kaji as Eren; the English dub stars Bryce Papenbrook. The dub arrived later, so subtitles suited early viewers, but streaming now offers both, so pick whichever you prefer.
Episode 25 concludes around chapter 34, closing the Female Titan arc inside the Stohess District. Readers continuing the manga should begin at roughly volume nine, though the anime reorders a few scenes and adds extra material.
