Huehuehue. So, I've decided to get rid of the one-shot idea, and make a whole story. It may be a little inaccurate, but whatever, no flames please. I changed a little part... like originally I had a snip-it of the Triwizard tournament, but it wouldn't have worked out. So, here it is~ Remember to review after you read~

I do not own D. Gray Man or Harry Potter :(

enjoy~

"You want us to inspect who again?" Allen, an unsure boy of white hair and blood red white arm asked, Timcanpy fluttering on his shoulder.

"Actually, Allen, it is just your mission." Komui, the head of the science department reminded. "His name is Harry Potter. Recently, a few akuma have attacked his school. We are thinking that they are targeting him."

"Why?" Allen asked.

"I assume that the Earl has token interest in the boy." Komui continued. "If we don't do anything soon, then he could be in trouble." Komui adjusted his glasses, so they glinted in the light. "You won't have to go far, Allen. He lives in Britain."

"Hmm…" Allen thought. "Then it shouldn't take long to complete this mission." Komui's lips curled into a smile, making Allen cringe. "Um, what is with that smile…?"

"Allen, we've enlisted you to teach at his school."

"H-huh?" Allen stuttered. "B-but don't I get a say in this?"

"Nah, you can do it Allen. Here is some basic stuff to know…" Komui rummaged through a few things and brought out a whole stack of books. "Try to read them today."

"Komui…" Allen began after reading the title of the first book, which was Defense Against the Dark Arts: A Beginner's Guide. He ran his finger along the dusty borders. "Um, for one, why do you have this? It is magic, isn't it?"

"When you think of it, Allen, Innocence is kind of like magic." Komui noted. "If you just taught about Innocence, what would the students think?"

"So, this Harry Potter guy is a wizard?" Allen asked, finally getting things straight. "And I'm teaching… at a wizard's school?"

"Precisely." Komui nodded. "Now, get to work. You need to patrol Privet Drive for any akuma."

"Wow, you are serious, aren't you?" Allen asked, barely able to keep the stack of books in his arms. He began to walk out of the room, and through the hall. Magic, huh? He thought.

When he was deep in thought, he bumped into a girl with long, dark pony tails. It was none other than Komui's sister, Lena Lee. They didn't fall back into the ground, but all of the books stumbled about the floor, creating a large echo sound. "Oh my gosh, I'm so sorry, Allen!" she cried.

Allen still held a couple books in his hands; he began to pick them all up, with the help of Lena Lee. "What is this stuff, Allen? Are you getting into magic or something?"

"Well, you see… apparently I have a teaching degree in magic…" Lena Lee just stared at him with an amused look. "A boy is being targeted by the Earl, and Komui wants me to investigate." Then, Lena Lee smiled.

"Good luck, then."

"Thanks…"

Harry Potter, the boy who lived. The mark on his forehead proves it. His parents have died protecting him, and he had been sent to his aunt's house. He'd been living a miserable life there, sleeping under the stairs.

Then, some four years ago, his life changed when an owl delivered a letter. He found his true home, and it was Hogwarts.

Harry swung back and forth on a swing-set in an abandoned playground. Hogwarts… he thought. Everything seemed to have gone silent, and Harry became uneasy.

Suddenly, the ground in front of him burst. He covered his face, so none of the dust and dirt would get into his eyes. Quickly he retreated from the swing, and looked up to see a ballon-like creature with a face, that had a star-like mark on its forehead. On instinct, his hand reached for his wand.

But he remembered that he would be expelled for using magic over the summer.

Harry recoiled his hand from the wand, and looked up to the strange creature. The thing shot at Harry again, and if he hadn't rolled to the side, he would've gotten hit. Suddenly, he heard a voice.

"Innocence, activate!"

A giant metal arm extended out in front of Harry to stop the blasts, then it pushed the blasts back toward the creature and it exploded. After the creature exploded into blue light, Harry was left exasperated, and he heard a sigh from behind him.

What Harry saw was a boy that looked his age, but with white hair and a strange mark in the shape of a star over his eye. He was pulling a glove over a bloodied hand. Harry nearly gasped. "You are Harry Potter aren't you?" The exorcist finally asked. Harry recovered, and nodded. "Nice to finally meet you. I'm Allen Walker." Allen looked to where the creature once was. "That creature you saw was an akuma."

Harry could barely speak. "I… believe I've heard that somewhere before…" Harry tore his mind through the many lectures that Hermione has given him over the last few years. He's pretty sure one of those was about akuma.

"Then, there is more breath for me." Allen smiled. "I'm also going to be your new Defense Against the Dark Arts teacher. So we are well met, Mr. Potter."

Harry sat back down on the swing. Allen sat on the swing next to Harry. "Um… sir…" Harry began after a long moment of silence.

"Yeah?" Allen asked.

"What is that mark over your eye? It looks like the one from the akuma you just defeated." Harry explained, he opened his palm, and Timcanpy fluttered into it, resizing into the shape of his palm.

"It is a curse from an akuma." Allen simply explained. "This eye gives me the ability to figure out where akuma would be hiding. Sometimes they take the shape of a human form, so you'll never know until it is too late." Allen looked at Harry again. "I have just noticed that you have a scar as well. Or is it some tattoo?" Allen pointed to Harry's forehead.

"You are probably the first person who has ever asked that."

"Seriously?" Allen asked, Timcanpy fluttering from Harry's palm to Allen's head.

"You know, I'm the boy who lived… the one V-" Harry stopped himself. "He- who-must-not-be-named couldn't kill." This time Allen had to search through his thoughts.

"OH! That's right!" He smacked a fist against an open palm in realization. "Voldemort!"

Harry smacked his face with the palm of his hand. He was supposedly the new Defense Against the Dark Arts teacher, yet he needed a few minutes to figure out who He-Who-Must-Not-Be-Named is.

Suddenly, the humid air grew cold, and they could both see their breaths. Both of them knew what was coming, since Allen did a little research on this type of thing, and Harry had already experienced this before. They both immediatley stood up from the now frozen swing set, and switched glances with each other.

"Demeantors."