The title describes everything. But...oh well. Perseus Jackson finally had a normal life, well, a normal life for a demigod. he's finally living it, but much to his awesome luck, Chiron sends him off to a new adventure! He finds a out he's the grandson of the one and only, the Dark lord! Or Voldemort. But what if he actually cares about him? What if Percy and the Golden trio were never really friends? And what if, he wants to avenge about his grandfather's death?And what if, he was an evil Percy? This is not a typical Harry×Percy crossover, nor this is a natural grandson of Voldemort story. Just wait for the danger that awaits....Perseus Riddle.