Wonwoo always knew that the one who had captured his heart was no other than his pledged brother, Choi Seungcheol. That's why he couldn't understand why his heart was beating so fast everytime Prince Mingyu, the prince from Mansae Kingdom . Was it because he was too annoyed by the prince's behavior, to the extent he's losing his cool? Wonwoo was troubled, since Prince Junghan himself ordered him to be Prince Mingyu's personal guard during his visit to their Kingdom. It was his duty