Centuries ago there were dragons far stronger than the raging dragons we know now. The dragons did not only use the element of fire but others too. Among those dragons were the top 11. Dragons taught humans a power called Dragon Slaying. They were meant to look after the other humans because there were dragons who didn't like humans. However some of those who were taught this power used it to kill their teachers. Soon A war between humans, dragons and other dragons began. Among the top 11, 7 stayed good as the wore between humans, dragons and other dragons raged on. Those 7 were known as the 7 Blooming Dragons. They all taught their power to humans and protected them. And that's it no one knows anything else. All we know is those dragons' souls are still wondering, waiting for someone who is deemed worthy of their power.