After the two had settled their frightened clansmen and chased out of Sky Tower, they saw that mysterious Legendary Dragon-type Pokémon.
It stood upon the plains, its towering, powerful body radiating terrifying majesty. It was scarlet, with patches of white and blue decorating parts of it.
Whisker-like antennae stood atop its head, swaying in the breeze alongside its towering feathers.
Its thick, muscular tail left deep marks in the ground. At first sight, its unprecedented sense of power could seize one's very soul.
It held two great doors in its hands and gazed up at the sky. Scorching sunlight poured down as the weather had somehow shifted into "Sunny Day," carrying a faint pulse of ancient times.
Was this the power of a suspected Legendary Pokémon? It had actually changed the Dragon Cave's unchanging weather all by itself!
Groudon stared at the sky, freely using its Authority to alter the weather and return the Dragon Cave's heavens to their ancient, primordial state.
The sky seemed to be burning, dyed scarlet.
The ancient pulse was also restoring its body, which had yet to return to its peak after completing the fusion.
Groudon was waiting.
Waiting for that detestable flying Caterpie that looked down upon all living things from high in the heavens.
Thanks to Su Hao and Reshiram's efforts earlier, the commotion from breaking the seal had been much smaller than Groudon had expected.
But as the master of Sky Tower, the other party would certainly notice that it had broken free.
Groudon did not want to be caught by it while fleeing, so it would rather provoke it directly.
It believed that arrogant fellow would never tolerate its territory—the sky—being violated.
Once it dyed the entire Dragon Cave's sky red, that fellow would certainly fly into a rage. Groudon was