Scion, book 1 : Conflict of Conscience
Ron Marz et Jim Cheung2001

SCION is the story of Ethan, youngest prince of an ancient empire locked in an uneasy truce with its eastern rivals. In an age in which ritual combat has taken the place of real war, Ethan prepares to mark his passage into manhood by participating in his first tournament. Then an incident occurs which changes his life forever – and leads to the first open warfare in generations. Young, headstrong, and somewhat naïve, Ethan embarks on a quest to avenge his brother’s death that takes him deep into the heart of the Eastern lands. This is a world where dragons are scientifically engineered creatures with on-board computers, hovercraft are decked out like tall ships, and Lesser Races are bred for toil.