In ancient times, there existed two hostile nations which frequently squabbled over trivial issues. One day, their disagreement escalated into war over something as minor as removing dog waste. Suddenly, God intervened and instructed the leaders of both nations to exchange their most beautiful princess and their most intelligent young man as bride and groom respectively. Saara, the princess from country A, met Naranbayar, the prince of country B, while pretending to be married in order to maintain peace between their nations. As they grew closer, they discovered they had feelings for one another.
Kin no Kuni Mizu no Kuni ranked first in the 2017 Kono Manga ga Sugoi! for the female readers category.