Kalos Region, Ore Country.
Just as Li Wei and Steven left Professor Sycamore's laboratory, planning to set out in search of Ash and his friends,
Diancie, meanwhile, was also preparing to leave the Ore Country to find Xerneas, at Grandpa Carbink Dian's suggestion.
The elderly Carbink, Dian, recalled his youthful days a thousand years ago.
Back then, the old Carbink was still a young Carbink, traveling the world.
A terrible catastrophe had occurred in a place called the Arus Forest.
A wave of dark crimson light spread outward,
Radiating from a red point at its center, the dark crimson light stripped away color and life wherever it passed.
Lush trees withered at a speed visible to the naked eye, turning into petrified remains. Babbling streams ceased to flow, exposing dry, cracked riverbeds.
Running Pokémon froze in the poses they had held a moment before, instantly losing every trace of life. As though they had been dried out for millions of years in an instant, they became silent stone statues.
It was neither the scorching of flames nor the destruction of a storm, but a far more absolute form of death.
Dian remembered an indescribable crimson mist, seemingly composed of pure annihilation, spreading like ripples from the direction of that dark silhouette.
Everything the crimson mist touched, whether plants or Pokémon, instantly lost its color and vitality.
That was none other than Death Wing.
Yveltal's power-the breath of finality that stripped away all life.
For Yveltal represented death itself!
"All their life was drained away."
Dian felt the light within his own body dimming, as though his consciousness, too, would be frozen by that endless, deathly stillness.
He huddled beneath a rock with his Pokémon companions, seemingly about to fall into eternal darkness like the petrified trees around them.
Just as