Despondent Beauty [Ereri/Riren Fanfic] [COMPLETED]

In a world full of mystic creatures hunted by the wretched human race, holds a mighty species. The Taos. The Taos consist of bird like men and women that rule all of the creatures in the world, the bird they resemble is what the humans like to call a "peacock". They have the tails and feet of a peacock and wear a special jewel and marking on their bodies making them very easy to define. However, these mighty beings aren't the only ones who have claimed the world as their own. What the Taos call the humans are "sky beasts" and they have been on the brink of war ever since the death of the first clan leader, Grisha Jaeger. The tribe and creatures wept for his death but their weeping soon ceased when finally after twenty years the queen, Carla Jaeger, had given birth to a healthy baby boy, they had a successor. On the same day the human's to rejoiced to a birth, the leader's sister had given birth to a frail baby boy. The leader was determined to train the boy into the strongest of them all to kill the new successor for humanity's victory. Eren Jaeger, the successor to his rightful place as clan leader, had learned of his father's death and the description of the human who killed him. He was determined to find the man responsible and kill him before his people and his successor as well. What will happen when these two successors meet? Will the humans and the Taos turn to war or will they announce peace? Or will an unexpected compromise put both young males in grave danger?