The Princess Waltz - a competition of dance of whirling blades held to find the princess most worthy of becoming the new queen of Seven Central. Hopeful candidates travel from corners of the kingdoms of Eldelant to take part in the "waltz", but only one princess will be crowned. But this world is unknown to Arata, a modern-day guy who understands princesses even less than he does dancing. He is more concerned about the rumors swimming across his school about the new transfer student, Chris Northfield. The rumors about him being a prince seem to make no sense, because why would such a polite and accomplished boy attend this school? Arata's curiosity gets the better of him and gets pulled into something deeper than he'd ever imagine.