(Inside term, don't ask)
Just a random story beginning, it's not fancy or such.
The world was in ruins. Food was scarce, and so was housing. Our family is one of the lucky ones. We have a shack and a few stale baguettes. The snow made life just a little more bearable. It was winter and people were dying from frostbite and hypothermia. My father is dead, and bodies are stacking up in the cemetaries quickly. I'm the only girl in my area who can not die. I am immortal.
But please, God, take this horrid curse away from me. I will not get any older, and I will be the only living being on Earth when all life ends. There were plenty of immortal children back thousands of years ago, and the world wouldn't have been destroyed if they hadn't existed. Their powers, the curse was lifted. When the curse is lifted, the immortals can't control their powers and they go haywire.
The world relies on me to keep the human species from going extinct.