Retrospective

The harbor battle has already taken its toll: Daz's corpse slides into the water, Samuel lies shot dead, and a badly wounded Armin can only watch while Annie's and Reiner's Titans keep the Yeagerists at bay. Within the occupied building, the Azumabito engineers deliver crushing news, the flying boat needs at least half a day of preparation, time Magath knows the exhausted Titans cannot buy. Hange calculates the consequences: with such a delay, the Wall Titans could push hundreds of kilometers inland and flatten the continent within days, far too late for Liberio. Kiyomi salvages the plan by proposing they seize a ship, tow the flying boat across the sea to the Marleyan port of Odiha, and finish the work there ahead of the Rumbling's arrival. Magath approves, and the word goes out.

Mikasa relays the change to Annie mid-combat while the crew makes for the vessel. Floch grasps what the enemy intends and orders every remaining Thunder Spear gathered to sink the ship. Annie's and Reiner's battered Titans absorb spears and gunfire shielding the Azumabitos, and Pieck ferries Levi, Gabi, Yelena, and Onyankopon through the water to the dock. Falco, watching the two Titans falter and thinking of what Porco Galliard would have done, cuts his palm open despite Pieck's warnings and detonates into the Jaw Titan. The uncontrolled beast shatters the Yeagerist line, though it also mauls Pieck before Magath carves the unconscious boy free. A desperate Floch flees the rout and levels a Thunder Spear toward the hull, proclaiming himself Eldia's savior, but Gabi's rifle shot ruins his arm and sends him plunging into the sea as the spear detonates harmlessly in the water.

As the ship steams out, Magath remains ashore, intent on destroying the captured Marleyan cruiser so the Yeagerists cannot pursue. Keith Shadis, who earlier blew the rail line carrying enemy reinforcements, joins him. Barricaded in the cruiser's powder magazine, the two men trade final reflections: Keith speaks of the pride he felt watching his students choose this path, and Magath admits he wishes he had let his Warriors live ordinary lives. They introduce themselves by name for the first time, then Magath fires into the gunpowder. From the deck, the escaping allies watch the cruiser vanish under a mushroom cloud.

The alliance abandons on-site preparation of the flying boat in favor of Kiyomi's plan to tow it by ship to Odiha. Falco undergoes his first transformation into the Jaw Titan, turning the battle but attacking friend and foe alike until Pieck restrains him and Magath cuts him loose.

Gabi shoots Floch out of the air as he attempts to hole the ship's hull with a Thunder Spear. Magath and Keith Shadis destroy the last Marleyan cruiser in the harbor by igniting its magazine, sacrificing themselves to strand the Yeagerist pursuit.

The title reflects the paired farewells of Magath and Shadis, two instructors measuring their lives by the students they shaped. Hange's arithmetic makes the Rumbling's speed concrete for the first time, framing the entire arc as a countdown measured in days.

Originally slated for May 9, 2020, the chapter slipped to June because of the COVID-19 pandemic, the only delayed release in the manga's entire serialization since 2009. It adapts to the anime episode Retrospective and sits between Traitor and The Dawn of Humanity in the War for Paradis arc.