"Much younger than he should be..." Mikasa trailed off, blinking a little as she glanced over at the girl beside her curiously. "I can understand needing space, but family is family. I would take my family no matter what the situation I found myself in. You see..." She hesitated, then straightened and continued.
"The new family I had, my adoptive family, they were also killed. Terrible creatures called Titans existed in my world. They lived only to eat humans. We'd...we'd built up three walls to keep them out of our world, but one fateful day, an abnormal managed to break into the walls. The Titans came in, destroying our peaceful world. I...we were helpless. Children. Cowards." Mikasa clenched a fist at her side. "I watched one devour my adoptive mother, Eren's mother. We escaped because a soldier grabbed us before we could get taken, and I promised that I would keep Eren alive no matter what."
She fell silent, shaking her head a moment then looking back up at he girl before her. "It wouldn't hurt to say hello again to them because he's actually here. Different age or not, he's still family."