having two different color eyes making you growing up with a horrible childhood. People always look at you as if you're sort of demon. 'the one who ate their twin inside the womb'. Since your twin died right after she was born..

For some reason, Sang gyu. The crown prince find you as the most beautiful and a unique princess. He ask your parents a permission for get to know you. And your parents agreed.

After a few years, you got married with him. But you couldn't understand, why?