Chapter 1: Andalus
Harry Potter was only one year old when he died. He died by the hand of Voldemort whom turned into ashes after the curse rebounded. Remember the fact that it was ashes and not dust.
When Sirius had arrived, the Potter parents were dead, and Harry was nowhere; it seemed he had completely vanished. The only thing left in his room was disintegrated body of Voldemort.
The wizards mourned.
Though, it must be said. Did you honestly think that was the end?
O-o-o-o-o-O
"SANS!" Papyrus yelled at the top of... wait he doesn't have lungs.
"Yeah what is it, Paps?" Papyrus was running towards him at great speed carrying a small bundle in his arms. What it contained, he had no idea.
"Look I found this over near one of my stations!" he tilted the bundle towards Sans, showing off a cute, small skeleton inside of the bundle of soft green blankets.
"Where the heck did this kid come from?" Sans questioned, taking the tiny baby into his arms and cradling him.
"I don't know, but I did find this note pinned to his blanket."
'Dear someone,
If you are reading this then that means we are dead. We ask you to please take care of Harry for us, and don't tell anyone his name, he is in danger. Voldemort, a dark wizard wants to kill him due to a false prophecy. We need you to protect him, he is our last chance for hope in our world.
Lily and James Potter'
"Sans, we have to keep him!" Sans couldn't say no. While he might be only eight and Papyrus was five, the small kid would be good for them, and Papyrus would get a new playmate when he had to work.
"Paps, we'll keep him, but he needs a new name." and as the two of them stared down at him, he opened eyes that looked like Sans' only a bright green flashed in them, and they were back to white. In that split second they decided.
"Andalus. His name is Andalus."
And so the world was changed forever.