My Dear Cold-Blooded King summary: Born a humble peasant, Kihara Mei has lived simply day by day as a merchant in the capitol, and never assumed things would change. But, one fateful day would change the course of her life, when faced with a deadly challenge against dangerous royal assassins. Now, with the eyes of the dreaded Blood King upon her, her life of simplicity would now become a tangled web of secrecy, deceit, and desire.