Akuratsu Koutei to Chouai Kazoku Keikaku

A peaceful farm girl is suddenly chosen to marry a ruthless emperor feared for his cruelty. Upon arriving at the capital, she’s met with hostility from his guarded eldest son and the quiet presence of his younger child. As she works to win the children’s trust, she discovers she holds a secret power vital to the empire. But to truly belong, she must do more than become a bride—she must become a mother and melt the heart of a cold ruler.