Princes, Brace Yourselves / Spy Brides? We Married the Enemy Princes! / Not the Spies You Expected / Ready for Me, Darling? / Princes, Meet Your Match / Take That, Your Highness

Two modern besties find themselves transported into another world, becoming sisters sent from a rival state for a political marriage while secretly acting as spies. They are married off to the cold, war-god-like Prince Rui (the elder brother) and the charming yet scheming Prince Jing (the younger brother). The two brothers remain highly wary of the marriage and even attempt to kill them more than once. What they never expect, however, is that the “elite spy” in the elder brother’s eyes is actually a pure, bookish girl obsessed only with knowledge, utterly clueless about romance or intrigue. Meanwhile, the “naive, love-struck girl” that the younger brother thinks he can manipulate turns out to be a master of human nature, one who effortlessly turns the tables on him. And so begins a sweet, misunderstanding-filled game of reversal.