Disclaimer: I do not own Harry Potter or D Gray-Man

Sorry that this chapter is so late, I had to rewrite it about 10 times before I was actually happy with it. I would also like to apologize for any grammar mistakes. English isn't actually my first language and I usually get a friend to read and edit it a bit. But she got frustrated with me rewriting the story all the time and just refused to do this chapter.

Chapter 1

Allen Walker didn't know where he was or how he got there. It just happened. One minute he was talking to Lavi and the next thing he knew, he was standing in a room that looked like it belonged to some sort of medieval castle. A girl with brown bushy hair was standing next to a platinum haired boy. As Allen looked around a bit more he also saw a wizened old man with half-moon glasses resting on his nose. The old man had white hair and a long beard. Next to the old man stood a woman wearing a long emerald green dress and a witch hat.

"Where am I?" Allen asked rather nervously. He wasn't going to relax just yet. Although these people didn't seem very threatening, he felt as if they were responsible that he was here. Whatever the case might be, Allen got ready to activate his innocence just in case they were a threat. The old man stared at Allen for a while before turning to look at the boy and the girl.

"Mr Malfoy, may I asked what spell it was that you convinced Miss Granger into casting?" The old man asked the platinum haired boy. The boy didn't seem to know how to respond. "Well, Mr Malfoy?"

'Spell?' Allen thought. 'Am I in the wizarding world? I'm not even a wizard… at least, I don't think I am…'

"Very well then Mr Malfoy. I'll ask you to follow me to my office then, you too Miss Granger and Mr Walker." The old man was heading to his office with the boy and the girl reluctantly following him with shocked faces. Allen followed as well; he didn't have much of a choice. However, he was on high alert in case of danger.

'How does he know my name? I've never met him before in my life. I should probably just keep an eye on him; he could be a threat…'

They stopped in front of an ancient gargoyle of some sort of creature with wings. "Sherbet Lemon." As the old man said that, the statue started to move upwards and as it did, stone stairs followed the gargoyle. The old man stepped onto the moving stairs and gestured for the others to follow him. Soon the stairs stopped moving and they were standing in front of a door that the old man soon opened.

The room past the door was a beautiful circular room, full of funny little noises. A number of curious silver instruments stood on spindle-legged tables, whirring and emitting little puffs of smoke. The walls were covered with portraits of men and woman, all of whom were snoozing gently in their frames. There was also an enormous, claw-footed desk, and, sitting on a shelf behind it, a shabby, tainted wizard's hat. [A/N Taken more or less directly from the book] Behind the desk, sat a very toad-like woman, whom was wearing nothing but pink. "Ahem! Hello there headmaster! Lovely day today! Isn't it? So, is there any particular reason why there are students out of bed?" The pink toad told the old man. Allen hated her already.

"Yes, there is in fact a very good reason. I asked Miss Granger and Mr Malfoy to accommodate me while I went to retrieve young Allen Walker here." The old headmaster said as he gestured towards Allen. "Since Mr Walker was a young boy, he has had terrible health and was unable to attend Hogwarts. However, Mr Walker has been getting healthier since last year and is now able to attend school. But unfortunately the area he lived in has been stuck inside a terrible storm for the past few months and we weren't able to deliver his letter, he got it shortly after school started, about a week ago."

"Do you honestly expect me to believe an excuse as ridiculous as that?"

"Not at all, but alas, it is as true as you want it to be."

"What?" Umbridge said with a befuddled look on her face. "Boy, is this true?"

'This is it. Whatever I say now will decide my fate, I can either tell her the truth or…'

"Yes, ma'am! Everything is true. It was truly a terrible storm!" Allen said dramatically.

"Surely Hogwarts must have had other methods of delivering the letter?"

"No, because it was a magic storm… that no one could get in to in any way."

"And what about your so called disease?"

"Well, when… I was little… I ate a poisonous potato!" Umbridge lifted her eyebrow at this. "You got me on that one! I was just joking, but I really was sick, my hair is proof enough! It lost all of it's colour when I got the disease…"

"You look healthy now."

"Need I remind you, Professor Umbridge, that Professor Dumbledore did mention Allen has gotten better within the past year." The woman in green told the overgrown, pink toad. Allen just gave an innocent smile; the kind of smile he gave while playing poker that would make his friends fear for their lives. It seemed to have almost the same effect on Umbridge and the others in the room.

"Um, I think, I shall go now… I will, however, be keeping an eye on… Mr… Walker…" She said nervously. "I would like you to inform me of everything tomorrow. Now, please excuse me."

"Bye, bye Professor Umbridge!" Allen waved to her. She stared at the boy nervously while he waved at her. Then she left the room as soon as possible and as she did, Allen's smile disappeared. "Now start talking, I want to know where I am, how I got here, why I'm her, and who you people are."

"You are at Hogwarts School of Witchcraft and Wizardry and I am Professor Dumbledore, the headmaster. Mr Malfoy can explain how you got here and why you're here." Everyone turned to look at the blonde boy standing next to the bushy haired girl.

"Um, you're here because, I convinced Hermione to do a spell that was meant to summon an heir of Slytherin from the past, I'm not sure if she did it right though…"

"Also, as far as I'm concerned, Miss Granger has no romantic interest in you whatsoever, care to explain?"

"I… used a… really weak love potion… Not strong enough to make her fall fully 'in love' with me, but enough to make her at least confused about her feelings, because I honestly don't want a filthy, good-for-nothing mudblood to love me!" Hermione seemed really hurt at this statement. "No offense." He told Hermione. She simply stared at him in disbelief, then she raised her hand and slapped the boy. "I said no offense!"

"None taken!" She said as she slapped him once again. His check was burning red when she finished.

"So, Mr Walker, are you the heir of Slytherin?" Dumbledore asked the white-haired boy.

"I don't even know what a Slytherin is and I also don't know my family, so I really have no idea." Allen told the old man. "Um, how do you know my name?"

"That is something you will find out with time."

"Talking about time, you said summon an heir of… whatever… from the past. So, does that mean I'm in the future?"

"I would think so. How old are you at the moment?"

"I'm fifteen."

"Then you will be attending school with the fifth years."

"But this is a magic school, I cannot do magic. I think."

"You can do magic and therefore you have to go to school, although you would have to do a bit of catching up."

"Professor Dumbledore! Allen would have to catch up on 4 years of work!" Hermione said.

"And I am sure Mr Walker would cope."

"How about I just don't go to school. I never did and I don't really plan to." Allen protested.

"What do you mean you never went to school? You must have gone to school!" Hermione said, shocked.

"I'm not sure what time this is, but the time where I'm from not everyone has the privilege of going to school. But I do know how to read and write."

"What kind of a time do you live in?"

"The 19th century."

"That's sounds dreadful! You poor thing!"

"What! Why are you feeling sorry for me?"

"You had no education."

"I know how to read and write and do basic math!"

"Poor, poor thing… You're an idiot because you had no education."

"I'm not going to talk to you anymore." Allen turned to face Dumbledore. "So, as we were saying earlier."

"I am afraid that you do not have a choice, Professor Umbridge is already under the impression that you will be attending school." Said Dumbledore.

"So, I really don't have a choice. All right then."

"Well, that's settled then. You will start tutoring tomorrow and will hopefully be able to attend by next week. But first we will have to go to Diagon Alley first thing in the morning. As for you, Mr Malfoy, Professor Umbridge is not aware that you 'convinced' Miss Granger to perform that spell. Therefore, punishment will not be very severe. But note this, if you put even a single step out of place, punishment will be severe. Is that clear?" The boy nodded. "Also, you will not be telling anyone about this matter. Not even your closest friends, yes, that means you Miss Granger. Now, Professor McGonagall, can you please return these students to their dorms?"

"Certainly, Professor. Follow me you two." The two students followed the Professor out of the room leaving Allen and Dumbledore standing alone in the office.

Allen felt nervous as he entered Ollivanders Wand Shop. After he arrived in Diagon Alley, Dumbledore and Allen went to Gringott's first and found that Allen had his very own vault filled with heaps of money. Dumbledore explained that this could be because he wasn't actually from this time and that another version of him had opened this vault. After he got his money he went to get his robes fitted. As for his pet, Dumbledore allowed Allen to keep Timcanpy while on his stay at Hogwarts. Although he wasn't sure how the golden Golem had ended up with him, he assumed that Tim was hiding in his cloak when he got transported here to this time. He got all of his textbooks and equipment easily. And now, he was about to get his wand. The wand shop was tiny, empty except for a single, spindly chair in the corner. Thousands of narrow boxes containing wands were piled right up to the ceiling of the tiny shop, and the whole place had a thin layer of dust about it.

"I've been expecting you Mr Walker…" A voice said.

"Who said that?" Allen said as he looked around the room for the source of the voice.

"Right here." And old man said as he popped up from behind the counter. He had messy, white hair and had pale silver eyes that seemed to sparkle from excitement. "I suspect that you will be a tricky customer." The man that Allen assumed to be Ollivander walked over to him. "Which is your wand arm?"

"What do mean, sir? Wait, do you mean whether I'm right or left handed?" Ollivander nodded. "I'm ambidextrous."

"Which hand do you use more?"

"Um… probably my left hand? I'm not quite sure; I use them about equally… I think."

Somehow Ollivander had ended up in the back of the shop and Allen was now being measured by magical measuring tape and a note book was jotting down all of the measurements. Ollivander found a long narrow box and gave it to Allen. "Try this one." He picked the wand up and almost immediately it was pulled away from him. "Nope!" He went back and brought another box. "How about this?" Just as Allen reached for it he took it away again. "Definitely not!" He handed him yet another box and did the same thing once again. "Not even close." This kept going on for a while and Allen was starting to feel if that he was annoying the man, however, he kept getting more and more excited the more wands he snatched away.

"I'm sorry! I think this is just some mistake! Maybe I should just leave!" Allen said after the 40th wand was given to him.

"That won't be necessary; all of these wands are simply not choosing you because you are destined for another."

"Huh?" Allen said with a very confused look upon his face.

"The wand chooses the wizard!"

"Oh!"

"Try this one, although I'm not sure if it will work… So far it didn't even have a single reaction with any of the other wizards who came by." He handed Allen the box containing the wand. "If I recall correctly, it's a sturdy wand, about 6 inches long and it is made from Gopher Wood which is most unusual since it isn't known to have any magical properties. His core, however is most curious as well. It is made from a substance known as 'innocence'. I don't know much about it apart from the fact that it is very powerful and it is also known as the 'God Crystal' since it's apparently been sent to Earth by God. Thus this wand has been named 'The Holy Wand' because of the Gopher wood and the Innocence. Have a go." He handed the wand to Allen. As soon as he held the wand he felt all warm inside, almost as if the wand was made for him. "Curious, very curious… I think we have found your wand, Mr Walker." Allen payed for the wand and then went back to Hogwarts with Professor Dumbledore.

"Hermione! Why did you sneak out last night?" Harry asked Hermione.

She looked up from her breakfast. "Professor Dumbledore asked me to come with him to get a latecomer. He didn't get his letter in time so he wasn't prepared for school. He will apparently only join school next week though."

"That's odd… Usually Hogwarts always finds a way to get the letter to the student… I mean, that's what happened to me anyways."

"Oh! About that, the area he lived in was under the influence of a magical storm. No one could get in or out even with magic."

"That makes more sense… Is the new kid a first year?"

"No, he's actually a fifth year. He couldn't attend school when he was young because he had a disease. He's healthy now but the disease left his all white."

"Bloody hell! That's a lot of work to catch up to!" Ron said.

"It is. But I'm sure he'll manage. Somehow. He has to catch up for the next week, so he won't actually be joining any classes until next week."

"What house do you think he'll be in?"

Hermione thought for a while. "Well, he's extremely nice and polite so I think he'll be in Hufflepuff, maybe Gryffindor, I don't think he'll be in Ravenclaw and I definitely can't imagine him in Slytherin."

"Hey! Mudblood!" An all too familiar voice said behind Hermione.

"What is it Malfoy?" She turned to look at him.

"Dumbledore wants to see you in his office."

"Okay." She faced Ron and Harry again. "Sorry, I'll see you in class." She said as she got up and left.

As she entered his office, she saw Allen in the office with Dumbledore. "Ah! Miss Granger! I just need to have a quick word with you before you go to class. This is regarding Allen's tutoring."

"Do you want me to tutor him, Professor?"

"That would be splendid! I would like him to be ready by next week, so if you don't mind?"

"Of course, when do you want me to come?"

"Whenever you have time."

For the past week Allen had been cramming a bunch of school related things into his head.

"My brain's hurting! This is too much information! Can I go get a snack?" Allen complained.

"No! You still have to do the fourth year! Don't worry! You're doing really well! It's weekend now so I'm sure you'll be able to make it! Then you can relax."

"Just one teeny, tiny snack?"

"No! Your 'teeny, tiny snack' is equivalent to a five course meal!"

"I'll eat quickly!"

"I already told you that inhaling your food is bad."

"I don't inhale my food."

"Yes you do! You eat your 'teeny, tiny snacks' within less than ten minutes! I think that counts as inhaling food!"

"But if it takes ten minutes it shouldn't be a problem if I have a teeny, tiny snack. Right?"

"And who do you think makes your 'teeny, tiny snack'?"

"House-elves?"

"It's made through slave labour!"

"But they're more than happy to make me food, so that doesn't really count as slave labour. Plus, they like working."

"Well… Okay fine! But no more 'snacks' until dinner!" Allen's face lit up.

And so he kept studying for the rest of the weekend –without any snack breaks- and finally managed to finish on Sunday night. Having done nothing but studying for the past week, he wanted to go straight to bed and sleep. He was still surprised how he managed to do four years of wizard school in a week. He was just about to tell Dumbledore that he wants to go to bed, when he ran into the man himself.

"Ah! Walker, I was looking for you!" He told Allen. "Since you are starting school tomorrow, I thought it best to sort right now. And I'm also pleased to see that you are already in your school robes."

"Yes, I thought I might put them on for some reason… What do you mean by 'sort'?"

"Sort into the house you will be in while on your stay at Hogwarts."

"Oh!"

"So if you would please follow me to the hall where we will sort you into your house?" Dumbledore started making his way to the hall and Allen followed him, wondering about what house he'll be in. When they made it to the hall, there was a chair with a hat set up in front of the teachers' table. Dumbledore went to go stand next it and then cleared his throat. Everyone's eyes were on him and Allen.

"Students of Hogwarts! I am pleased to inform you that –although a little late- the fifth years will be having a new student joining them this year." The hall broke into whispers. "Settle down! Mr Walker, can you please take a seat?" Allen sat down on the old chair feeling really nervous because everyone in the hall had their eyes on him. He felt Dumbledore place the old hat on his head.

'My, my! This is quite a curse you have! And at such a young age as well…' The hat said in his head. 'Now, where should I put you?'

'In a house?' Allen said to the hat.

'Yes, I mean, what house. Surely you know the four houses of Hogwarts!'

'Yes I do.'

'You seem to be a very brave and loyal person, although, you have you also have a specific goal in life. Not to mention that you are very kind, but you have a dark side as well… What's this? How odd… Although you don't seem to know about it… Let's keep it that way, shall we?'

'What?'

'Yes, yes... I think I better put you in…'

"SLYTHERIN!" The hat yelled out.

Hermione stared in disbelief at Allen who was now makin his way to the Slytherin table.

"I thought you said that there is no way that he'd be in Slytherin?" Harry asked Hermione.

"He can't be! He's one of the nicest guys I have ever met!"

"Maybe he was pretending?"

"No. That kindness was definitely genuine."

"He could be one bloody good actor?" Ron suggested.

"I think Ron's right, Hermione." She looked up at Harry as he said this. "I think he was definitely pretending."

"I refuse to believe that!" She felt someone tap her shoulder and she turned around. Behind her stood Allen, bowing his head at her.

"Thank you so much for tutoring me! I couldn't have done it without you!" He looked up and smiled.

"You're welcome! But, why are you bowing…"

"I always bow when I say thank you." He said as-a-matter-of-factly.

"See! He's obviously a really nice person! Also, not only bad people go into Slytherin. Merlin himself was a Slytherin as well and look how he turned out!"

"No… There is definitely something evil and dark about him."

"Ron!" Hermione told Ron.

"What! He may look all sweet and innocent now, but I am dead sure that he is evil on the inside!"

"Apologize now!"

"Bloody hell Hermione! Does that innocence of his look real to you?" Ron said as he pointed to Allen.

"Which innocence? My arm or my personality?" Allen responded.

"Huh?"

"If you're referring to my arm, then yes, that innocence is pure, but if you're referring to my personality, I'll have you know that I can strip you naked and take all of your possessions in a game of poker. Also, I'm not someone you'd want to make enemies with. Now please excuse me, I have to return to my table because my stomach is about to eat itself. Bye!" He turned away as he waved to the golden trio.

Most of the girls sitting at the Gryffindor table waved at him as well, including Hermione. "Harry, anything odd about the girls' behaviour?" Ron asked Harry.

"Definitely, and I think we should watch out for him, he's up to something and also, I don't like him."

"Me neither buddy."

"Oh! Stop being so melodramatic! He's fine. I should know, I've been tutoring him for the past week. But he does have a serious case of inhaling food." Hermione scolded Ron and Harry. "Look at him eating! He's like a vacuum cleaner for food!"

After dinner, the golden trio went back to the common room. Hermione went to bed but Harry and Ron stayed up for a while discussing Allen. "There is definitely something off about him. First of all; why would a student suddenly transfer into fifth year two weeks after school started, two; he has white hair and a scar on his eye, technically it should've done something to his vision, three; he is just too nice, and he even admitted himself that he's 'evil' and that getting on his wrong side would be bad, and lastly; he's in Slytherin, and I know that Hermione said that no everyone in that house is bad, but most of them are."

"Isn't his hair white because of a disease?"

"No. That's obviously a lie. I'm sure we'll find something on him. If we research his family tree, we'll find something. Because he's in Slytherin, and usually a Slytherin will be a pureblood. Even if he's a half-blood, we'll still be able to find something."

"That means going to the library…"

"… We'll start tomorrow. Or… we could get out my dad's invisibility cloak."

"Harry, even I know that researching a family tree would take a while. We can't do it in just one night!"

"You make a good point. We'll start tomorrow."

Thank you for all the reviews! I really appreciate it! But I feel like I need to clear up a few points

1. NO YULLEN! I have my reasons. One, I hate them as a couple. Two, this isn't a yaoi and if it was, it'd be a Laven fanfic. And last but not least, the plot simply doesn't allow it

2. Jazebeth- It's pentagram. I checked both the manga and the anime and that's what it said for both.

3. AnimeWarrioress 359 and Lenore91- I thought about what you said and that's how I ended up on the love potion idea. I also kind of grew up with the idea that Malfoy had a crush on Hermione, so even if he doesn't, the idea that he does simply won't get out of my head, hence all the passionate kissing (which was painfully gross to write)

Also, regarding the magic potion thing, I'm not exactly sure how it works in Harry Potter. How he gave it Hermione I'm still deciding, but if any of you have any ideas, feel free to let me know. Once again, if anything at all seems a bit off, please tell me and I will try to fix it.

Thank you for reading :P