Whereabouts of His Left Arm: The Struggle for Trost, Part 5.Captain Levi of the Scout Regiment and his squad successfully retake a town from the Titans until they are called to an emergency at the Trost District as the Titans have invaded the city. When Eren was eaten and swallowed by the Bearded Titan, he found himself in its stomach along with the bodies of its victims. His rage at the Titans caused him to burst out of the Bearded Titan's stomach by transforming himself into the mysterious Titan and going on a rampage against them. Although Eren's comrades saw him emerge from the mysterious Titan, they all agreed to keep it a secret and bring him back inside Wall Rose. However, Kitts also witnessed this and has his men aim their weapons at Eren. Armin and Mikasa try to defend Eren, but to no avail. As Kitts fearfully orders the cannons to fire on the three of them, Eren recalls hazy memories of his father giving him an injection, telling him to reclaim Wall Maria and go to their home's basement with his key. In order to protect Mikasa and Armin from the cannons, Eren partially transforms himself into a Titan, sheltering them inside his ribs.