Need help remembering the name of a manhwa

The vague idea is a weak noble son attempts to end his own life and his body is possessed by a powerful hero who was locked up by the gods. Then he goes around killing those gods. The leader of the gods is this white figure with no discernible features. I remember a dragon girl and an old man in the body of a female automaton. I can 100% for sure say its not 66666 Years. If anyone knows, id be incredibly grateful!