To Turn The Tables For Love - Kalosshipping

"Hmph! You're actually a hero? You're on 'their' side? Fine then, be that way. Just so you know, we are now officially enemies!"
Serena Yvonne, the daughter of the evilest villain out there, represents Yveltal and is expected to follow in her mother's footsteps. Though extremely obedient, she is quite the tsundere when her mom isn't around.
"Whatever, I knew this day would come around anyway."
Calem Xavier, the boy on the heroes' side, represents Xerneas and is the son of the hero that managed to defeat Serena's mother after a long gruesome battle. He wants a different path from his father, though others disagree. He's a very shy person as a regular human, but extremely confident as a hero. At least, before his ego was crushed by his nemesis.
Out of the entire world population, only certain people are chosen to either be a hero, or a villain. They are the ones who will fight in a war against each other for as long as time will exist.
It isn't a choice, it's destiny.
But maybe when a hero and a villain fall for each other, the story written in the stars will change...

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This story is for those Kalosshippers out there. I'm still a heavy amourshipper, but that's Ash and Serena from the anime. X and Y (Xavier and Yvonne) from the games and manga are different people. I still call 'Y' Serena though.