Mercenary pilot Charles, serving the Levamme Imperial Air Force, embarks on a covert mission: to brave a perilous journey of 12,000 kilometers through enemy territory to escort Princess Fana safely to the mainland. Amidst fierce aerial battles and daunting warships, Charles valiantly safeguards the princess, weaving a tale of forbidden romance between an orphaned pilot and a princess bound by an immutable fate. This narrative earned the prestigious tenth spot in the 2009 'Kono Light Novel ga Sugoi!' rankings.