One day long ago there was a young boy named Shiriki. He was an ordinary boy, living in a dark, dark world. He always tried to play with the older kids but they just called him shrimp. One day the boy was just sitting on a log. He then he heard news that his dad had been captured and killed by the evil buffalo.
After he heard the news Shiriki was very angry and wanted revenge. He planed a masterful plan to kill the buffalo. Somewhere in the back of his mind he thought of the fact that many Pawnee soldiers have died of him. The boy says to himself that he would begin his quest when he woke up. When he had awoken he began, he climbed steep cliffs and trudged through bogs. He finally reached the cave of the buffalo's cave. He took one look at the buffalo and fired an arrow aimed directly at the buffalo's heart and it was a bulls-eye.
After he had done that he sacrificed the buffalo to the great god with all the body parts. The Great God was thrilled the evil buffalo had been slew. The great god then turned the boy into a big ball of light that lit up the world. The Great God then named it a Sun because he was son of his beloved father. The Great God then punished the buffalo putting them on plains to be hunted.
That is how the sun came to be and why buffalo are hunted.