Lonely Immortal

A million years ago, there was a shocking battle between immortals, demons and demons. The earth cracked, the sky was reflected in blood and was almost extinct. The demons did not die but fell asleep, and the immortals were almost extinct. When everyone thought that there were no immortals, demons and demons anymore, a college student accidentally became the last immortal in the world due to a trip, only to find that everything was slowly recovering. The demon is back, what will happen to this last immortal!