Gold Kingdom and Water Kingdom (manga)

Once upon a time, two countries who shared a border wouldn't stop squabbling over petty issues. Their spats eventually escalated into war... over an incident involving dog poop.

Finally, the gods declared that both nations had to call a truce. The most beautiful girl in the Gold Kingdom would marry the smartest man in the Water Kingdom, paving the way to a new era of peace! When Sarah, a princess from the Gold Kingdom, meets a charming man named Naranbayar from the Water Kingdom, they decide to do what it takes to stop more pointless conflict between their countries - by pretending to be in love. Will their plan work? And what if real romantic feelings blossom between them?