(whtwolf, I'd assume that it would be ok to make something up decently. As long as it has no significant impact on the story lke saying that the town was in a volcano or something.)
Mark looked up toward the moon and laid down on the grass nearby. The moon shone bright just like the night he was reborn. He remembered it like it was only about 5 years ago despite it being much longer.
It was a clear night sky, the wind was awfully quiet, as if the world was holding its breath. My family was sick, doctors gave up some kind of paracite they thought, ending our hope as they left. One by one my family died and all I could do was watch and wait for my time to close my eyes and dream forever. A strange figure staggered in, wearing tattered clothes, in the middle of winter. If I wasn't dying I would have cared. If he killed me or not, this creature eating me alive would have. In a way I did die that day. The figure walked over and sat down by me, the last of my family, my dad, mom, younger sister and my grandfather had all passed before I did. The house seemed to grow darker as if this thing that killed my family was turning on the structure itself. The figure said something. I'm still not sure what it said, the only thing I could make out was something about helping. Time had eroded my memory. The next thing I could recall was a pain in my body unlike any other before. I woke up some time later, vomited some kind of bile and looked around, It was the dead of night, I was outside but the cold didn't bother me anymore. I then began my existance with my new body, the fiendish creature purged from my body.
Mark examined his hands, thinking all the potential his little sister could have had, the years stolen from her. He knew that it was the main reason he didn't want to hurt anyone, the reason he became a doctor. The kind of person who would save lives.