Percy Jackson and the Titan of belief

When Percy returns to camp Half-Blood after successfully completing the quest assigned to him by Athena in order to marry her daughter Annabeth Chase, he discovers he has a brother named Domienic. Domienic hates Percy with a passion and will do anything to drive him out of camp, and to drive Percy out of camp he knows that he must turn the people who are dearest to Percy. As the other demigods start turning against Percy, he gets more and more heartbroken but it doesn't hurt more then being disowned by his own dad and being thrown out of the place he once called home. Percy is banished from camp and Domienic is made the camp leader, but before he leaves camp he swears on the name of Chaos, that when they need his help the most he won't be there...