Eiyuu Densetsu: Sora no Kiseki The Animation  

The Legend of Heroes: Trails in The Sky, Legend of the Heroes: Trails in the Sky, 英雄伝説 空の軌跡 THE ANIMATION

Ten years ago, the Erebonian Empire almost destroyed the Kingdom of Liberl by invading its capital city. However, they were stopped by a determined counteroffensive led by Cassius Bright. Now, as the invaders retreat behind the northern borders, they are still coveting the small kingdom's magic and technology. To rebuild after the invasion, Liberl is receiving aid from the Bracers Guild, whose mystical use of "Craft" is crucial to the nation's defense. For Estelle Bright, daughter of Cassius, this history is just something she learned as a child with her adopted brother Joshua. However, history has a way of repeating itself, and when their father's airship suddenly disappears, it makes sense for two capable young teenagers to go on a rescue mission of their own.