Eiyuu Densetsu: Sora no Kiseki The Animation
English title: The Legend of Heroes: Trails in the Sky
Japanese title: 英雄伝説 空の軌跡 THE ANIMATION
Type: OVA
Source: Game
Episodes: 2
Status: Finished Airing
Aired: Oct 10, 2011 to Jan 28, 2012
Duration: 42 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Kinema Citrus
Producers: Nihon Falcom, Bushiroad, Showgate, Aquatone
Licensors: Sentai Filmworks
Genres: Action, Adventure, Fantasy

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)