Rebirth of the Different World Dragon King

In my previous life, I was the peerless dragon king who had been arbitrary for eternity. I was attacked and killed by demons for seeking the truth. The forty-nine laws of heaven left a sliver of life. My remaining soul was reincarnated. When I woke up, tens of thousands of years had passed and the dragon clan had disappeared without a trace. The demon clan was dominant, with an immortal dragon soul and a supreme dragon body. When I returned to the top, the demon clan was small, so why should I be afraid? This is a story of a peak powerhouse reversing reincarnation, looking for the past, and rejoicing in revenge. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.