Although Yveltal is numbered among the gods, it is far more often treated as a demon; when it is mentioned in prayer, it is far more often by Xerneas worshipers seeking to triumph over it than any of the few eccentrics, contrarians, and mass murderers who make up its own adherents. And yet Yveltal exists, and the evidence of its existence is attested at every catastrophe and funeral; theologians have long grappled with why I chose to create such a creature, and a few skeptically minded individuals have questioned the existence of any other gods at all.
In truth, of all my creations, it is Yveltal's I have agonized over most. I knew the world before it, but it did not seem perfect so much as frozen; living things did not copy my desire of creation or perfection, but instead spent centuries in listless procrastination, confident there would always be a tomorrow. Yet although destruction is often needed to allow for new creation – the deaths of the elderly provide space for the young, a civilization or species exterminated by Yveltal gives rise to competition and vitality in the struggle to replace it – I fear this god has time and time again gone too far, destroying too much far too quickly for the world of the living to replace it.
With each act of destruction, Yveltal grows stronger still, healing its wounds and boosting its power. Many scenarios have been thought to bring about the end of the world, but in my opinion it is most likely that the world will end when Yveltal becomes so powerful that even I can no longer restrain it, and destroys the planet outright. Thankfully, that day is very distant; Xerneas, who I created to check it, remains an evenly matched rival.
