Ah-jung's Blue Eyes?
I just finished watching the korean bluray of this movie and one scene really stood out - a close-up of Ah-jung's face where her eyes are clearly blue. I even rewound and paused it and everyone in the room agreed - they were a dark blue, not caucasian blue, but definitely not the normal asian black.
That seemed so odd, and the close-up so deliberate that I expected we would learn something about Ah-jung to explain it. But I didn't notice anything else connected to her blue eyes for the rest of the movie
Here's a capture of that scene: http://www.freeimagehosting.net/uploads/0f111f01d1.jpg
Was it ever explained and I just missed it?