The Olympians Tale

*(Disclaimer this isn't supposed to be accurate to the Greek mythology tails its my own version)* The only way to Bring peace between Olympians and human after the titan where thrown in Tartarus was that the gods aren't allowed to rule forever. To prevent another war every 20 million years the gods will have to chose one of there children to take there place. When it came time for the gods to have children they would go to earth to mate with mortal, which would make there kids demigods. Pure gods cant have children together because there is to much magic that the offspring cant handle it. Zeus on the other hand has never had the time to have any children till now. Zeus fell in love with Hera, soon it was found out the they soon would have a daughter which would make the gods even question themselves. Had they been wrong and what would a pure god child be capable of, for there has never been one before until now.