Becoming the king of Red was one of the many things Kyungsoo did not expect. There was no way that out of all his gifted, charming, pure-blooded royal siblings, he would be the one chosen to succeed

The android was not human. They fitted her with an outfit of skin so that she looked human.  They matched her with a freshly picked human brain so that she acted human.  They crafted her with the best conditions, yet in the end, they forgot about the human heart.