Mewtwo Strikes Back

Another Parallel Timeline.

Relatively speaking, it was a Parallel Timeline in the future.

After the Guardian God War, every country divided up the Legendary Resources.

After that, the Ziyuan Prophecy came true. Earth first experienced a natural disaster caused by Groudon and Kyogre descending upon it.

The two Pokémon fought a battle that churned the entire Pacific Ocean as they competed for Earth's Natural Energy and accumulated the power for Primal Reversion.

The battle lasted a long time, and humanity was utterly helpless against those two immensely powerful Legendary Pokémon.

Even the Tapu Family, some Legendary Pokémon that had interacted with humans before this, had no desire to provoke those two. They stayed hidden on their islands, leaving the Island Kings they had chosen utterly helpless.

It was not that they did not want to ask the Island Guardian Gods to save the world—it was that they refused to come out!!

According to the Tapus, if Rayquaza did not appear, they just had to wait for the two to finish fighting.

In the end, the two Ancient Pokémon fought for ten days and ten nights straight, from their ordinary forms all the way to their Primal Reversion forms.

Mega Rayquaza finally appeared on the eleventh day and put an end to the battle.

Although the two Ancient Pokémon had not deliberately targeted humanity, the droughts and torrential rains caused by their battle still triggered countless natural disasters.

The countries around the Pacific Ocean in particular suffered severe economic losses.

The natural environments of many places were permanently changed by that battle.

For example, Tokyo, Japan had completely become a city of rain. As sea levels rose, people gradually moved to higher ground, yet the rain showed no signs of stopping even after a long time.

If this continued for several