Across the sea, the nation of Marley finishes its fight with the Mid-East Allied Forces using the Power of the Titans. However, it becomes all too clear to the Marley military that the power of the Titans is losing its place in the modern age. In order to maintain its hold on the world, the power of the Founding Titan is needed now more than ever. Unfortunately for the warriors, the Founder still rests in the hands of Eren Yeager and the last remnants of Eldia, the devils of Paradis whom Reiner Braun will soon have to confront once more.
|91|| The Other Side of the Ocean|
(海の向こう側 Umi no Mukougawa?)
|March 8, 2017|
| Four years after the battle of Shiganshina District, the warriors of Marley besiege Fort Slava of the Mid-East Allied Forces. Falco, a warrior cadet, is saved by his brother Colt who returns him to the trenches nearby. As his comrades patch Falco up and remind him of their goal in the battle, Colt reports the situation to Marleyan Commander Magath. He suggests sending their Titans Porco Galliard and Pieck to attack, but the presence of the anti-Titan artillery prevents this strategy.
Cadet Gabi offers to destroy the armored train carrying the artillery, and the commander reluctantly agrees. Gabi approaches the bunker in plainclothes while secretly carrying a bundle of grenades. When the train approaches, she collapses to the ground and throws the bombs on the tracks, putting the weapon out of commission. As she returns to the trenches, Galliard transforms into his Titan and shields the warrior cadets from machine gun fire before charging the bunkers and wiping out the Allies' defenses.
|92|| Marley's Soldiers|
(マーレの戦士 Māre no Senshi?)
|April 8, 2017|
| Above Fort Slava, Marley prepares an airstrike as Porco Galliard's Jaw Titan and Pieck's Cart Titan lead the 800-warrior unit in a charge against the Mid-East Allied Forces. Falco attempts to save an Allied soldier's life, though the soldier is ungrateful and disgusted towards the Eldians. As Commander Magath and Colt survey the situation, the signal is given for the Marley zeppelin to begin the next phase of the attack. From above, Zeke transforms parachuting Eldian captives into Titans with his Titan power, creating a devastating airstrike. The warrior cadets look on as Titans begin eating the soldiers.
Reiner Braun joins the battle as the Armored Titan, destroying the remaining anti-Titan artillery as Galliard assists. Once the coast is clear, Zeke joins the ground forces as the Beast Titan and uses leftover artillery in the fortress to destroy the Mid-East naval fleet stationed in the nearby bay. The fleet is destroyed, but artillery fire from the ships heavily damages the Armored Titan. A peace treaty between Marley and the Mid-East is later signed, but the outcome of the battle reminded Marley of the growing need to acquire the Founding Titan.
|93|| Midnight Train|
(闇夜の列車 Yamiyo no Ressha?)
|May 8, 2017|
| After the surrender of the Mid-East Allied Forces, an outraged general demands answers concerning the world's slander against Marley's Titans. Magath explains that the modern age is leaving the Power of the Titans obsolete, and Marley's inferior technology leaves them at a disadvantage. Zeke proposes that Marley must acquire the Founding Titan as soon as possible to gain full mastery over the Titans while also focusing on improving conventional weaponry. The general takes Zeke's advice and the meeting concludes. Afterwards, Colt marvels at Zeke's influence in Marleyan matters and wonders at how Zeke is able to use his spinal fluid to create and control Titans despite not having royal blood. As Zeke suggests Colt will inherit a secret upon receiving Zeke's Beast Titan, Magath arrives to congratulate Zeke on his meeting conduct. He reveals to Zeke that in the past three years, many scouting ships sent to Paradis have gone missing. Zeke believes it may be the doing of Eren's
Reiner awakens from a nightmare elsewhere with Porco Galliard at his side. Galliard is cold towards him, feeling that Reiner was responsible for his brother Marcel Galliard's death. He says that when he inherited the Jaw Titan from Ymir, he could see her memories but not Marcel's. Pieck arrives and tells Galliard to go easy on Reiner, whom she tells to meet with the warrior cadets. Reiner leaves to meet the cadets on the dock, who are watching traumatized Allied soldiers get sent away as a reminder of the Eldians' demonic nature. The children are excited to see Reiner, who sees his old comrades in the faces of the cadets, and together they walk around the town. Afterwards, the Marley soldiers take a train back to their homeland. Colt praises Gabi for her heroic deeds during the battle at Fort Slava, and Falco is bitter to see she will likely inherit the Armored Titan and die an early death. Reiner demands for Falco to correct his views on the power of the Titans, and Falco quickly apologizes. Reiner suggests that if Falco wants to save Gabi, he must work hard to surpass her and inherit the Armored Titan in her place.
|94|| The Boy Inside the Walls|
(壁の中の少年 Kabe no Naka no Shōnen?)
|June 8, 2017|
| The warriors return at long last to their hometown, reuniting with their families. At the Braun family residence, Gabi's heroism is praised and Reiner tells of the horrors he experience living among the devils of the island.
Later that day, Reiner recalls his youth when he trained as a warrior so that his Eldian mother and Marleyan father could live together. Faced with many struggles and shortcomings, Reiner's dream kept his resolve alive.
|July 7, 2017|
| While Gabi and the warrior cadets train, Zeke and his fellow Titans discuss Eldia's situation, and Zeke informs them that the Tybur family will use their status order to boost Eldia's reputation in the eyes of the world when the time comes to attack Paradis once again.
Afterwards, Reiner recalls his final days in warrior training when he, Bertolt, Annie, and Marcel were sent to Paradis to reclaim the Founding Titan. On their journey, Reiner learned that Marcel set up Reiner to inherit the Armored Titan instead of his brother. Reiner's shock was worsened when shortly afterwards, a Titan consumed Marcel.
|96|| The Door of Hope|
(希望の扉 Kibō no Tobira?)
|August 8, 2017|
| The Warriors lost hope for their mission after Marcel's death, but Reiner's determination to live and succeed spurred his comrades on. Arriving at Wall Maria, the Warriors began their attack.
Two years later, Annie emphasized their need to retrieve the Founding Titan urgently, but Reiner was convinced that a slow and steady approach would be best for humanity's sake. Planning to enter the Military Police Brigade to enter the interior, the Warriors joined the 104th Training Corps.