Two Brothers (Chapter)

"You care for your little brother... I sympathize with that... And so... I'm sorry."

- Zeke Yeager apologizes to Colt Grice before using his scream

Brothers Older and Younger (兄と弟) is the 1st chapter of the 30th volume and the 119th chapter overall of the Attack on Titan manga, written and illustrated by Hajime Isayama.

Overview
Zeke Yeager begins to stir after falling from the top of the Wall as Eren fends off Porco Galliard's Jaw Titan. As Armin Arlert, Mikasa Ackerman, and the military try to fight off the invading Marleyans, Zeke is horrified when Colt Grice reveals that his younger brother, Falco, has ingested some of Zeke's spinal fluid.

However, this does not stop Zeke from using his scream to transform Falco and all the affected members of the Eldian military into Titans. Falco's Titan attacks Reiner Braun on Zeke's orders, buying Eren time to get free. Reiner believes it would be all right to allow Falco to inherit his Armored Titan, but Galliard emerges from his Titan, after having gained access to his brother's memories. Confident now that he has always been better than Reiner, he allows Falco to devour him instead. Eren slips out of his Titan to escape Reiner. However, before he can reach Zeke, a tearful Gabi Braun shoots Eren in the neck, decapitating him.

Summary
As the members of the Marleyan army continue their attack, Reiner recovers and spots Eren approaching the prone Beast Titan. Galliard lunges and halts the Attack Titan by grabbing and biting into its leg. This prompts the Attack Titan to ruthlessly beat down on the Jaw Titan, striking the nape several times and critically wounding Galliard. Eren is then shot once more by Magath atop the Cart Titan; before he can fire again, the Yeagerists come from behind and begin to strike the Cart Titan.

Noticing the Cart Titan's position, Armin and Mikasa are pinned down by gunfire from several soldiers; Connie launches a Thunder Spear and orders they take out the Marley soldiers before going to the Cart Titan. Commander Pixis and Nile Dok of the Military Police lead the assault while Yelena silently gazes out from above.

Inside the nape of the Beast Titan, Zeke's entire back has been destroyed from the rounds fired from the Cart Titan. He notices he is now on the ground and begins to get to his feet. As the Armored and Attack Titans continue to fight each other, Reiner grabs Galliard in an attempt to wake him; after grabbing the area around the Jaw Titan's nape, Reiner unexpectedly transfers the memory of Marcel revealing he tried to protect Galliard from becoming a Warrior. This raises Galliard out of his stupor, but is overcome with emotion and unable to speak.

As Zeke is about to summon the Titans, Colt arrives with Falco, pleading to let Falco get clear from the sound radius so he will not be affected: while stunned and remorseful that Falco consumed some of his spinal fluid, Zeke still lets out a piercing scream: this transforms Falco, Commander Pixis, Nile, Roeg and all the affected Eldians throughout Shiganshina District into mindless Titans. The Titans soon turn towards the numerous Marley soldiers and easily kill them before they can respond. Reiner notices a transformed Falco charging towards him on orders from Zeke and begins to try fighting him off.

Zeke gets shot through the head once more but Armin and Mikasa take the Cart Titan by surprise, killing the soldiers accompanying it. Noting it is impossible to fight off both Falco and Eren, Reiner notices the latter trying to escape and grabs his heel; Reiner mentally directs Falco to bite into his nape and transfer the Armored Titan, ending his life. Seeing Zeke not moving, Reiner begins to remove the armor around his nape so Falco can bite through; however, Reiner spots an injured Galliard stumbling towards him. After a few words on the sacrifice Marcel made, Galliard allows himself to be consumed by Falco and instead transfers the Jaw Titan to Falco. As Reiner notices this, he is surprised to see Eren hardened his body, trapping him while he tries to escape; Reiner tries to crush Eren but is shot in the hand by a Thunder Spear, causing it to explode.

As Zeke and Eren try to make their way to the other, Eren notices out of the corner of his eye that a tearful Gabi has picked up the deceased Colt's rifle. Before anyone can react, she shoots a round into Eren's neck, decapitating him as a horrified Zeke cries out nearby.

Trivia

 * Gabi is shown riding a horse, despite previously stating in Chapter 109 that she has never learned how.
 * After Eren emerges from his Titan form, his pants and shoes are shown to be fully intact, despite the fact that his legs were partially bitten off in Chapter 116.