Disclaimer: I don't own Harry Potter nor Death Note
Prologue:
She was just so damn interesting. He had nothing more to do, he'd wandered around the shinigami world. Bored with the useless situation. You couldn't do much here. and so he decided to take a look into the human world from his stone turned seat. He never knew what drew him to England. Maybe it was the people's high like of tea. He didn't know, but he watched on. Until a young girl caught his sight.
When you're a god of death you have nothing if not time. He spent hours watching over the girl. How she would smile when she'd see her family. How she'd bounce up with joy at the sight of a present. When she'd cry after the other boys and girls around her would make fun of her. Pulling on her hair and telling her things. He watched on as she grew.
The way her eyes would light up her eyes. But he wasn't the only one watching, no another shinigami watched as well but not the girl, not really, he watched the shinigami and how he'd watched her grow over the years. Never moving, never sleeping only watching over her. It intrigued him. He couldn't understand why he'd do something so foolish. One day, after the girl had turned 11. When he'd seen her react to being something more. How happy they were. How they had unexpectedly stepped out to get supplies for the new place the girl would attend. They didn't see the man following them, didn't see the gun the man carried. He did though he saw what was coming. He watched.
Before he knew what was happening, even before he heard the gun shots, He took out his book, pen in hand, and he wrote the man's name. He wasn't fast enough to stop him from killing her parent's, but he saved her and as she fell to her knees and cried for her loss, a tear escaped his eye. "I'm sorry.." He whispered as he turned to dust disappearing from the world.
The other shinigami who had watched it all occur stood shocked, unnerved at what he'd seen. He made his way over to where the shinigami's fallen Death Note lay, and picked it up, looking down to where the girl still lay crying. He couldn't see what drew him to her. Until the girl, stood up wiping away her tears, and walked over to her father's corpse reaching into the pocket of his coat and took out a phone. He saw her dial and wait, sniffling all the while as she stood by the wall, looking down at the corpses of her fallen parents. The police arrived and she spoke not once shedding a tear.
He'd watch others be killed before, after all he too had time. But never had he witnessed anyone, especially a small child react in such a way. At that moment, as if possessed by the dead soul of the fallen shinigami whose remains lay at his feet, however preposterous, he resolved to watch over the girl. Until he deemed her ready to receive Maida's book. He would have given it to her, wanted her to have it. So he'd deliver it. She had many years to live out and he had an infinite amount to wait. Patience was on his side.