They discover that the Attack Titan has never truly obeyed anyone; it has always been guided by future memories, essentially allowing its users to "fight for freedom" across generations.
The core revelation of Chapter 121 is the Attack Titan’s unique ability: unlike the other Nine Titans, it can see the memories of its inheritors. They discover that the Attack Titan has never
Zeke Yeager, believing he is in control of the Founding Titan's power, takes Eren through their father Grisha’s memories to "de-program" him. They discover that the Attack Titan has never