The Prophecy of a Girl Called Cassiopeia

There once was a prophecy that spoke of a girl who was created for the sole purpose of bringing the downfall of the gods. Cassie wants to live a quiet and simple life, after all of the pain from her past. When she is approached with the idea of the prophecy, she struggles to decide what to do. Will she kill the gods to save the world and find love in the process, or will she side with the power-hungry gods to gain riches beyond her wildest dreams?