Dragon Prince by Jada Fisher

Kashir has lived his whole life in the shadow of his older brother who is now the king. When the young prince saves a dragon in distress, it appears he has finally done something to help his brother and his kingdom. He soon learns that the power of a dragon is something not to be trifled with. Or controlled. Will the dragon help Kashir become the prince he has always hoped to be, or will it destroy everything he sought to protect?