The End of the Backtracker: the 101St Backtrack

He was once a freak cursed by prophecy, and only Bai Yueguang was willing to hold his hand. When the devil focused on his prophetic power, Bai Yueguang sacrificed his soul to have the devil parasitize himself to protect him. The boy in the past turned completely dark, and used the power of the devil to crush the world, using the lives of millions of creatures as sacrifices, just to snatch back the dissipated soul from the belly of the devil. Until the protagonist group with the ability to go back in time appears, each time they go back will burn their own lifespan, and the first one hundred attempts were all defeated by the absolute power of the Demon Lord. For the 101st time, the protagonist stood in front of the Demon Palace holding his chest coughing up blood, looking at the man holding the demon container and muttering to himself - should he stop him from destroying the world, or should he accompany him through this doomed futile redemption? This time, the end point of looking back is either to end the demon lord, or to accompany him to death.