Attack on Titan manga volume 27 features story and art by Hajime Isayama.

Eren has infiltrated Marley territory and dealt the empire a devastating blow. But the real goal of the mission was always to get Zeke back to Paradis Island in secrecy. Now that this Titan heir of royal blood is inside the Walls, the island’s military government has its “earth-rumbling” weapon of mass destruction. But has this supposed deterrent actually started a countdown to total world war?

Attack on Titan manga volume 28 features story and art by Hajime Isayama.

After years as a lonely double agent, Zeke finally returns to the good graces of his home island of Paradis. Still, the Survey Corps refuses to let him meet Eren—the other ingredient in the earth-shaking weapon—for fear the explosive duo will be impossible to control. Meanwhile, the public responds badly to the military’s open distrust of their hero Eren, and the detention of the Marleyan volunteers spurs an uprising. Amid the turmoil, Eren takes matters into his own hands…

Attack on Titan manga volume 29 features story and art by Hajime Isayama.

As a Marleyan invasion dangles like a guillotine blade over the island of Paradis, allies have become enemies, and former friends are at each other’s throats. The Yeagerists are in all-out revolt, fighting to dismantle military rule before the potential for world war explodes into certain doom. Meanwhile, deep in the forest, the sides’ most ruthless, fanatical killers are locked in single combat, but triumph is elusive where Titans are involved…

Attack on Titan manga volume 30 features story and art by Hajime Isayama.

To activate the true power of the Founding Titan that courses through his veins, Eren must make contact with Zeke, a Titan of royal blood. Though Zeke has escaped Levi and the Survey Corps, he’s made little headway before the Marleyan military and its Titan warriors attack. Eren pummels his way through the Marleyan trap and past his former friends, but as the battle rages, he stumbles into a situation far beyond what his brother could have planned.