The Cayderic Chronicles — Alex Collins

The Cayderic Chronicles is the first installment in the series, The Cayderic Trilogy, which follows the lives of Todd and Dann, two teenage twins who discover the truth of their identities as the Kings of Cayderic, and their friends, as they adjust and learn what it means to become King. Adventures abound as they deal with brigands, evil usurpers, kidnappings, war, and hidden romances.