Jin Kurosaki is a high school boy who spends his days in irritation and apathy. That is, until he falls down a flight of stairs one day to save a pregnant lady named Mai and...ends up swapping bodies with her?!...

Long ago, the six elite young men with bravery at heart and beauty like flowers, called Hwarangs, were tasked with protecting royalty (the king). During the chaos of rebellion, the six Hwarang have lost track...