Prologue
There was a world named Shinsei once. It was a beautiful, prosperous place once. On Shinsei, everyone was born with an identical twin. And they even had folk tales, about the reason why. Some said that everyone born into that world only had half a heart. And their twin, was really the missing half. Others say that each twin had one half of their heart and one half of their twin's heart. Due to them being identical twins, there was only way to tell them apart. It was the difference in coloration of their magnificent, beautiful wings. Their wings were large enough to cover their whole body and wrap themselves in a cocoon, and the feathers were so sharp that could easily cut through steel. Their wings were the ultimate survival tool. They also had a large yet small difference in the coloration. One twin had pitch black wings, and the other twin had pure white wings. The people that believed that each twin had only half a heart, believed that the reason for the different wing colors, was that the one with the black wings had the part of the heart that was the darkness of it, and the one with the white wings was the part of the heart that was the light of it. Every civilization has a downfall, and when this one fell, it just completely disappeared. No one knew what happened to it, but there were only two survivors. They were the twin princes, and they were only ten years of age. They each blamed the other for the disappearance of Shinsei, went their separate ways, and changed their names to stay in hiding. They didn't find each other until a little ways later in their lives, and when they did, they didn't even know it was their long lost brother...