User blog comment:Miskos3/Chapter 56, Review/@comment-71.174.253.115-20140407162523/@comment-7418318-20140408090903

Mikasa can't have been an orphan. Her mother was the last surviving Asian and Mikasa is half-Asian. It would be an ass-pull of epic proportions if this secret killer-raising organisation just happened to get a half-asian orphan and just so happens to have the very last Asian in existence available to play mother.

And then they just let them live out in the country...

No freaking way.

It's much more likely that Mikasa's father (who was a normal European or whatever the majority of people in the walls is) from whom the family name came, was a brother, cousin or something of that Captain Ackerman.