Douluo's Shura Demonic Dragon

In a land of corpses, the sky is blood red and the air is filled with the smell of death. Deep in this land, there are piles of huge iron chains. Locked in the middle is a huge black and red dragon named Shura Demon Dragon. It is the emperor of the Shura tribe in ancient times. However, unexpectedly, although it won the battle with the ancient ancestral dragon, it was seriously injured, but it was attacked by the ancient gods and sealed here. Now that all the ancient gods have died, what will happen if the seal is loosened and our male protagonist travels through time and becomes it?