Eiyuu Densetsu: Sora no Kiseki The Animation

Ten years ago, a massive invasion by the Erebonian Empire almost shattered the Kingdom of Liberl, piercing to the heart of Capital City before being driven back by a determined counteroffensive led by Cassius Bright. Now, as the invaders pace behind the northern borders, coveting the small kingdom's magic and high technology, Liberl slowly rebuilds with the aid of the Bracer's Guild, whose mystical use of "Craft" is even more intrinsic to the nation's defense than its own army. For young Estelle Bright, daughter of Cassius, this is all just ancient history that she and her adopted brother Joshua learned as kids. But history has a way of repeating itself, and as they prepare to join the Bracers Guild themselves, sinister forces are preparing to thrust them into the familiar family situation of being in the worst possible place when mayhem breaks out. Because when their father's airship goes suddenly missing, of course it only makes sense to two green, but extraordinarily capable, young teenagers to strike out on a rescue mission of their own! (Source: Sentai Filmworks)The Orbment Revolution heralded a time of great prosperity for people. By using the mysterious energies harnessed by the mechanical engines called Orbments, there has been great leaps in technology, such as the development of airships, and the products of this are indelibly linked to everyday life. At the same time, the strongest countries have developed numerous Orbment-based weapons in bids to outdo each other, each with an eye on world domination.