The Forest's Edge

This world is no longer what we thought it used to be. It's been three millenniums since the humans have fallen during nuclear battle. Demons and beasts of the forest were enraged and took back the lands that we had destroyed, forcing us below the surface to live where we could be thought to do no harm. The surface now is consumed with the ruins of our past, lost and broken along with the ancient stories we had used to tell. Demons have resorted back to that of kingdoms and royalty, though so has the underground. I, a former princess have come to the surface in order to make peace again, though this is not a simple task to those whom do not belong. Despite myself coming from a human kingdom from the underground, can I make peace with you of the surface, a demon. What is to happen if both shall fall in love? What sorts of wars will be caused because of it? Is peace really attainable?