Attack on Titan, vol 22 (Japanska).

Volume 22 of Hajime Isayama's Attack on Titan follows what remains of the Survey Corps after their costly battle with the Armored and Colossal Titans, as they finally reach the basement of Eren Yeager's childhood home in Shiganshina. There they recover three notebooks left by Eren's father, Grisha — a record of his own hidden childhood and of a dark history beginning some 1,800 years earlier, when a single girl first obtained the power of the Titans, setting two peoples on a collision course.

Largely free of the large-scale battles that defined the preceding volumes, this installment slows down to deliver the series' central revelations: the true origin of the Titans and the reason humanity has spent generations penned behind three walls. With Grisha's past and the world's buried truth finally laid bare, Eren and his surviving comrades are left to decide what to do with knowledge that changes the nature of the war they thought they were fighting.