Hidden Royalty

"If the king and queen have more than one child that is the same sex, one of them must be sent to the normal world to keep the royal blood safe no matter what."

In an world where kingdoms and royalty are hidden from the "normal" world, a prince and princess from two kingdoms are sent away to keep their bloodlines safe. They are taught to lead and be strong no matter what happens around them. They are taught to be warriors. What will happen if they have to go back to lead? To fight? Or will they live their lives in peace without seeing their family again? Which option would be better? Only time will tell...