Regas 

Blessed with dragon's blood, a royal is born every generation with the creature's legendary might. But with that might comes a dragon's cruelty. Thus, each royal is assigned a Regas, a dragon tamer capable of quelling the raging hearts of those with the dragon's blessing. Abel has been trained in the ways of a Regas, but can he withstand the lunacy of the latest blessed prince? (Source: Tapas)