Attack on Titan. Book 7

Having turned into the Armored Titan and the Colossal Titan, Reiner and Bertolt try to take Eren and Ymir to their mysterious "homeland." At the cost of incredible sacrifices, the Scout Regiment retrieves Eren, while Ymir makes an unexpected decision... Shortly after these events, a brutal crime occurs in the soldiers' barracks, and the Scout Regiment finds itself embroiled in a conflict with the Military Police. Meanwhile, the people within the walls feel increasingly vulnerable, especially after the villagers inexplicably turned into titans...