User blog comment:Ncduru/The Erza-Irene Connection/@comment-27173965-20160426023835

I'm guessing cousin, but if she's Erza's twin, how come Neinhart didn't recognize Erza?

My twin sister and I are in the Army and didn't tell some people that we were twins. A lot of them would recognize us, thinking we were the other. They'd recognize me as my sister 6 years later, even the ones we told that we were twins. So despite the timeskip, Neinhart would've recognized Erza right away and made the connection. Especially now seeing that she's a Spriggan, he would've definitely known from first sight of Erza that she's Lady Irene's twin. Sorry, that's the one thing that really, really bothers me.

Unless Neinhart's a total idiot.