Second among the Attack on Titan manga's story arcs, covering chapters 3 through 14 plus a side story. Graduation barely ends for the 104th Training Corps before the Colossus Titan rips open the Wall at Trost District, and the battle drags Eren Yeager's hidden power into the open.
The Wall Sealing arc (Kabe Fusagu-hen) stands second among the story arcs of the Attack on Titan manga. Twelve chapters, numbers 3 through 14, plus the side story "Captain Levi" make it up, spread across volumes 1 through 4 and serialized from November 9, 2009 to October 9, 2010. The Prologue arc precedes it and the 104th Training Corps arc follows. The English name is an unofficial rendering of a title sourced from Hajime Isayama's blog.
The 104th Training Corps has only just graduated when the Colossus Titan materializes at Trost District and tears a breach in the Wall, dragging the fresh recruits into a sudden battle against the Titans flooding the city. As the fighting grinds on, Eren Yeager confronts a mysterious strength hidden deep within himself. The arc runs from "Night of the Disbanding Ceremony" through chapters such as "First Battle," "Small Blade," and "Roar" before ending on "Primitive Desire," with the Levi-focused side story slotted between chapters 9 and 10.

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The Wall Sealing arc is the second story arc of the Attack on Titan manga, covering chapters 3 through 14 plus the side story "Captain Levi." It was serialized from November 2009 to October 2010 and spans volumes 1 through 4.
The Colossus Titan appears at Trost District and tears open the Wall, forcing the newly graduated 104th Training Corps into a desperate battle against the Titans flooding into the city.
The Wall Sealing arc runs from chapter 3, "Night of the Disbanding Ceremony," through chapter 14, "Primitive Desire," with the side story "Captain Levi" inserted between chapters 9 and 10.
During the battle at Trost, Eren Yeager confronts a mysterious hidden strength within himself, an early sign of his power as a Titan shifter.
The 104th Training Corps arc follows the Wall Sealing arc in the Attack on Titan manga.
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