Omega, Champion of Chaos, Son of the Sea

Percy has won the war, but it has cost him so much. He doesn't know what to do. He has Annabeth, but even she isn't enough after losing Grover. So when Chaos brings him a proposition that will change his life, he accepts and becomes Omega. Then he has to go back to CHB, where everything he once loved is. Can he complete his mission and get his family back?