I was born to a family who had been eagerly waiting for me, and I never once imagined that I wasn't my parents' biological child. But when I was seventeen, a couple came to our door, weeping and kneeling on the ground as they begged my adoptive parents to let me go back with them. I thought that even if I'd been switched at birth, they would still love me. But the moment I returned to their home, all I faced was cold machinery. On my twentieth birthday, I gave myself a very special present!