"Your Highness... Who is that girl...?" "Why... she's my treasure."
The people of the Sho Dynasty are impoverished and starving. Though her petite stature often leads others to mistake her for a child, eighteen-year-old Koran is determined to save her struggling village. Living alongside her adoptive father—the local doctor and village head—she decides to take matters into her own hands. To help pay off their crushing taxes, Koran sneaks into the imperial palace in search of treasure, only to cross paths with the incredibly handsome Shiki! The very next morning, rumors of an assassin murdering the crown prince throw the nation into chaos. Koran immediately suspects Shiki is the killer—so what is she to make of his shockingly gentle nature?!