Mercenary pilot Charles Karino, the Levamme Kingdom's most skilled aviator despite the mixed blood that keeps him from official recognition, is handed a mission no one else will take: fly Juana del Moral, betrothed to Levamme's crown prince, twelve thousand kilometres across Amatsuvian territory to the capital. What starts as a job for money turns into something neither of them can name, as the flight forces Charles to choose between the fee he's owed and the growing pull toward a woman bound to a fate she never chose. This light novel later became the anime film The Princess and the Pilot.