All parallel universes originated from the same Big Bang.
The energy of that initial Big Bang had been so immense that it not only blasted countless parallel universes into existence, but also shattered the timelines into fragments.
Some universes' timelines developed earlier, while others lagged behind.
The timelines of countless parallel universes were uneven, yet they shared the same destination.
Final extinction and destruction.
The same was true for human civilization, the group that had first grasped the secrets of the timeline.
At first, it was merely a thought of self-destruction.
The self-harm, even suicide, of a single individual.
Brawls, wars, slaughter, and mutual destruction between certain groups.
Then those thoughts gradually gathered within humanity like a chronic illness, like a patch of cancer cells. Though they had not spread completely, they had always been there.
Finally, in some parallel universes, the urge for self-destruction infected the entirety of human civilization, driving everyone mad and causing that civilization to perish completely.
Negative entropy emerged from this, and certain highly advanced civilizations took notice.
Then came the dark forest, and the flames of interuniversal war began to burn.
Soon afterward, certain human civilizations of the future mastered methods of using the time dimension:
By using vast amounts of energy to temporarily pierce the gaps between infinite parallel universes, they could send certain things back to a certain universe in the past.
Except consciousness entities.
Those civilizations that had first discovered how to utilize the time dimension also discovered the flaw in the dark forest law of parallel universes and began their path to redemption:
Using the temporal energy they possessed, they issued certain special items to specific individuals in specific universes of the past, guiding them to grow step by step and save the human civilizations of those parallel universes that