It was whenever Shiganshina was still normal…..year 845…..the scouts were walk through Shiganshina after they came back from a mission, harden faces and injured. Eren, Armin and Mikasa were 10 years old and watching as the scouts walk by, until they see you, a 10 year old just like them, walking behind captain Levi, with a miniature ODM gear and scout uniform, and covered in titan blood. And Eren looks in shock.