Ikenie Daini Oujo no Konwaku: Hitojichi no Himegimi, Tekikoku de Chi no Saien toshite Daikangei wo Ukeru

Claire, the second princess of the Feitnam Empire, was said to be a failure. Under a peace treaty with the enemy country, the Kingdom of Balatonia, she was sent as a hostage and went there expecting to be killed, but what was waiting for her was a warm welcome as the fiancée of the crown prince. She was recognized as someone with extraordinary intellect, and the people of the kingdom were longing for her! Having finally found her place, she generously utilizes the knowledge she has accumulated so far in order to enrich the kingdom. She embarks on a reform of domestic affairs and the manufacture of paper. (Source: MU)