Disclaimer: J.K.R. owns the entire Harry Potter world. I own a dog, a hamster, and a couple of characters in here. I mean no copyright infringement.
Prelude
As the few remaining men dressed in black apparated into the battlefield, the magic in the air stilled. A young adult was in the middle of the field on his knees wishing for a miracle.
"How the hell am I suppose to do this, I can't kill him alone." The young Harry Potter thought. "Please someone out there help me, I need it now!"
BOOM!
That's when he felt it, the hope.
"Just raise your wand and think about the green of the Avada Kedavara. Think hard." The mysteriously familiar voice said from behind Harry. "When you have that exact color stuck in your head I want you to open your eyes."
Harry just stood there with his eyes squeezed shut. After a minute of complete silence around him, Harry finally opened his eyes to see a green spell fly straight out of his wand at the menacing Dark Lord in front of him.
BOOM!
The air started to move again and everything got louder and louder as the living Death Eaters screamed and clutched their arms as they were being burned from their bodies.
"He's dead now, so go to sleep young Harry, it's time to rest." Was the last thing young Harry Potter heard before he fell into a deep natural sleep.
--
"Harry wake up already! It's almost six and the kids are going to wake up soon!" Yelled a feminine voice from the bathroom.
"Wha.." Was all he managed to get out.