Thanks for reviewing Satra I'll try to update about every week … can't think of anything to put so, let the chapter begin

Disclaimer: I don't own YGO or HP

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Chapter 5: Yami no Potions

Yugi, Ryou and Marik continued to eat as much (and as fast) as they could; meanwhile Harry had stopped eating to ask something,

"Where's the Defence Against the Dark Arts teacher ?"

Ron stopped eating as well to glance up at the teacher's desk, then tried to say something, but found that very difficult with all the food in his mouth,

"And where's Dumbledore ?" Ron rolled his eyes at Harry, then mumbled something like 'I just said that.'

"Dumbledore's probably talking to the Professor now," Hermione waved away their worries.

Meanwhile Marik had decided throwing a bowl of pudding at Yugi would be a good idea, Yugi thought it was a bad idea.

"Marik !"

"Calm down, it's nothing," Marik snickered at the fuming Yugi,

"Nothing ! Nothing ! let's see if you think it's nothing !" and with that Yugi grabbed a nearby fruit and threw it at Marik's head, and so, started a food war between them, unfortunately Ryou also got hit since he was sitting by Marik.

"Yugi !"

"Sorry, I was aiming for Marik !"

Harry glanced up from his food to see his new friends fighting, he nudged Ron who looked up and immediately started laughing, this distracted Yugi, Ryou and Marik from their war, they looked over at the hysterical Ron, Hermione looked up and shook her head.

"Really Ron, it's not that funny,"

Marik brushed the food off his clothes and hair, Yugi and Ryou did the same,

"What were you talking about before, I heard you mention something about a teacher ?" Ryou asked politely,

"Oh, it's nothing, it's just our DADA isn't here yet, we were just wondering who it would be," Harry replied, Ryou tilted his head slightly, confused,

"Every year we have a new DADA teacher, all the others get fired," Harry supplied,

"They say the job is cursed," Ron, who had stopped laughing now that Yugi, Marik and Ryou looked 'normal' again,

"But, who would want that job ?" Marik asked,

"Snape wants it," Harry said,

"Snape ?"

"Yeh, he's the potion teacher, and head of Slytherin," Harry said dully, "he hates anyone who's not in Slytherin," Harry nodded over to where a man with greasy black hair was sitting,

"Great, someone else that hates me," Marik said sadly,

"Why, who hates you ?" Ron questioned,

"People you probably won't know," Ryou quickly supplied.

There was a clap, everyone turned to see Dumbledore standing once again,

"Students, you may have been wondering who our DADA teacher will be." Dumbledore paused to look at the pupils, "Please welcome …"

Everyone peered to were Dumbledore was, waiting for their new teacher, then a lady walked into the hall, here violet hair blowing slightly in some unknown wind, Harry narrowed his eyes slightly, someone she seemed familiar.

"Professor … Tonks," Dumbledore concluded, Tonks reached the teachers desk, smiling nervously she sat down.

"Tonks !" Ron yelled as quietly as he could, he then lowered his voice slightly, "Why Tonks ?"

"I- I'm not sure," Hermione simply said, "maybe Dumbledore couldn't find anyone else.

Or maybe, he wants someone he knows, someone he can trust. Harry thought to himself,

"Do you know her ?" Ryou's voice cut through Harry's thoughts,

"We've, met," Harry answered simple, Ryou nodded his head, but next to him Marik narrowed his eyes slightly

Their lying he thought simply to himself.

"And now that we have had our feast, it is time to go to your dormitory, follow your head boy and girl, they will show you the way." Dumbledore's voice rang around the hall for all to hear.

There was suddenly noise, people talking, Harry stood up, Hermione was next, then Ron,

"Come on you three," Ron called,

Marik, Ryou and Yugi stood, then followed the crowd that were heading for Gryffindor common room.

On the way Yugi gasped at all the paintings, Ryou looked a bit nervous whenever one shouted hello to him, Marik seemed to be thinking and didn't notice them.

Soon they had all crowded around a portrait of a fat lady, someone said a password, and the portrait swung open to reveal a room, Ryou walked in after Harry, looking around slightly confused as were to go,

"Our dormitories are up there," Harry pointed to a staircase, Yugi yawned, it had been a long day for him,

"Well, I'm going to bed now," Yugi concluded, Ryou and Marik nodded in agreement, all three walked up, they were quickly followed by Harry and Ron.

Yugi pushed the door open, walked over to a bed to find everything he had brought already there,

((How ?)) Yami asked his hikari,

(I … don't know)

"House elves," Ron answered Yugi's unasked question,

"Oh," Yugi was still slightly confused, but he couldn't be bothered asking, he immediately dressed into his starry pyjamas, and happily lay down in his bed,

(Today has been a great day Yami)

((I have to admit, it's been interesting so far)) Yugi smiled, then carefully slipped his Millennium Puzzle off, and put it on a table next to him.

Ryou smiled at Yugi, his eyes glazed slightly as he spoke to his Yami,

(I like it here Bakura)

((Well, if I can cause chaos then I will too)) Yami Bakura answered almost happily.

Soon all three were asleep, Harry walked carefully over to were Ron's bed was, trying not to wake any of his new friends,

"Ron ?"

"What ?"

"Do you think there's been trouble at the Order ?" Harry asked, slightly worried,

"huh, why would I think that ?"

"Well, maybe because Tonks is here,"

"Harry, Tonks is someone Dumbledore can trust, I mean, with you-know-who back, he's gotta be careful,"

"Yeh, I guess, but still it seems strange,"

"The Order of the Phoenix is doing everything they can to prevent you-know-who from killing you Harry, that's why he brought Tonks here, to keep you safe,"

"I guess that would be true," Harry said bitterly, "oh well, I guess I was worrying too much,"

"Yeh, you were, know go to sleep, I'm tired,"

Harry grinned, then walked back too his bed, a few minutes later he was also asleep,

Marik opened his eyes, The Order of the Phoenix, what's that ? He thought to himself, I don't know, but I'll find out, soon

Marik closed his eyes again, his head filled with unanswered questions.

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The next day Harry was the first to wake, he stretched sleepily then looked around, he was home again; he heard a thump, then turned to see Yugi lying in a daze on the floor.

Yugi blinked a few times, then glanced at Harry who was trying to stop himself from laughing, Yugi quickly got up, his face slightly red.

Hermione soon came bursting through the doors, waking everyone who was asleep; she was waving pieces a paper madly.

"What Hermione ?" Ron asked, rubbing sleep from his eyes,

"We've got our timetables," Hermione happily replied, handing out the pieces of paper,

"What ? You woke me for that !" Ron yelled unhappily, Hermione scowled at him, then turned to Yugi and Ryou who were studying their timetables,

"What have you got ? Divination or Ancient Ruins ?" Hermione asked,

"Err, Divination," Ryou answered happily, Yugi nodded in agreement, Hermione scowled,

"Hermione doesn't like Divination," Ron told them,

"Does anyone ?" Harry asked,

"What about you Marik ?" Hermione turned to the Egyptian boy, who had thrown his timetable onto the bed, then picked it up again, looked at it for a moment before answering Hermione's question,

"Ancient Ruins,"

"That's what I have too," Hermione said happily, "maybe I can help you," at this Harry and Ron rolled their eyes,

Marik thought slightly before answering,

"No," Hermione blinked, "I already know loads of stuff on Egypt," Marik added,

"Well, yes, but we have to read ancient text as well," Hermione added, Marik looked slightly bored, Ryou grinned,

"That lesson isn't going to be very hard for you,"

"Yeh, it'll be easy," Marik smiled, Hermione looked surprised at Marik's confidence, so did Harry and Ron, but Ron soon smiled,

"Hey, Yugi, Ryou, how about we make a bet ?"

"A bet ?" Yugi was confused,

"Yeh, make a bet on who gets the highest in the test, Marik or Hermione,"

Yugi smiled, then looked at Ryou who also grinned,

"Ok, how much ?" Yugi asked sweetly

"5 galleons on Hermione," Harry and Ron said at the same time,

"Fine, 5 galleons on Marik," Yugi and Ryou replied

((I didn't know you liked betting Ryou)) Yami Bakura's was easily heard by Ryou, who chose to ignore his Yami,

Marik grinned at Ryou and Yugi, Hermione turned and walked away, obviously displeased.

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They saw Hermione at breakfast again, she had a large book in her hands and was reading from it, Ron rolled his eyes, explaining that Hermione likes revising a year before the tests, Hermione just ignored him.

"So what do we have today ?" Ron took his timetable "lets see, we've got, DADA and …" Ron stared at his timetable in shock,

"What ?" Harry asked,

"We have double Potions ! First !"

"Oh great," Harry muttered, Yugi was about to ask what was so bad about Potions, when he suddenly remembered who their teacher was.

Ron mumbled something as he grabbed a piece of toast, Marik was speaking to Yami Bakura, both of them smirked, Yugi saw this

Uh oh, not good he thought to himself,

Yami also saw this, there was a small flash of light and Yami sat were Yugi had been,

"What are you planning ? Raider, Keeper ?" Yami asked suspiciously

"Nothing," Bakura said sweetly, he then glanced around at the food, "where's the steak ?" Marik shook his head,

"It's breakfast," Marik replied, emphasising breakfast, Bakura glared at him, but said nothing.

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Breakfast was soon over, all the students started making their way to first lesson, Marik, Yami and Bakura followed Harry, Hermione and Ron to Potions.

They entered the dungeons, Marik looked unhappily at the cold walls surrounding, once they were sitting Snape stood up and walked to the front off the class, looking at the students of Gryffindor coldly,

"Today, we will be learning how to make a potion that will allow you to obtain small control over another person," Marik laughed, but only the people around him heard,

"I can already 'obtain control over another person'," Yami rolled his eyes, Harry was slightly confused, but soon forgot about it when he heard Snape say his name,

"Potter, you would do well to listen, as we know, you aren't brilliant at making potions," Snape smiled cruelly,

"Yes Professor," Harry replied through gritted teeth,

"Good, now, follow these instructions carefully, make mistakes and you could find yourself with a death potion," Yami's eyes widened, he could hear Bakura chuckling to himself. Snape tapped the board with his wand and complicated rules appeared, Yami stared for a moment before raising his hand,

"Yes," Snape looked at him

"We're new here Professor," Yami began,

"Your point. Mr Motou," Snape asked coldly,

"Well, shouldn't we do less complicated potions ?"

"No," Snape replied bluntly, Marik laughed at Yami's surprised expression.

Yami quickly recovered then picked up a bottle, reading the name on the label, then glancing at the instructions.

Everything was going fine, until … BANG Yami fell back in shock as the potion exploded, people stepped back as smoke billowed out around the classroom. Once the smoke had cleared Snape came marching over to Yami,

"What happened ?" Snape fumed,

"I-I don't know," Yami stuttered, then looked over to were Marik and Bakura were laughing,

(Yami) Ryou moaned,

((This is cool))

(Let me take over Yami)

((No way, I like this lesson)) the mind link was then closed,

Snape soon noticed the laughing Marik and Bakura; he walked over to them,

"20 points from Gryffindor," there were moans, Marik and Bakura tried to stop themselves from laughing as Snape ordered them to clean the mess up.

The lesson ended eventually, with no more trouble, much to Yami's relief, the next lesson was DADA, which Harry was grateful off, Yami was shouting at Marik and Bakura as they all walked to the lesson.

Their argument soon stopped when they arrived at the door to DADA, they all stood outside waiting, Malfoy took this opportunity to insult Harry and friends.

"I see spiky can't even make a simple potion,"

"That wasn't a simple potion Malfoy," Harry said angrily,

"I wasn't talking to you Potter, so shut up," Malfoy replied

Harry glared at Malfoy, but Hermione dragged Harry away, Malfoy snickered, and was about to say something when Tonks arrived.

They all walked into the room, sitting down in one of the many seats and waiting for Tonks to speak,

"Hi, I'm Professor Tonks, but I prefer to be called Tonks," Tonks smiled, Ryou suddenly raised his hand,

"Profess… err, I mean Tonks, why is your hair red today ? it was violet on the first day,"

"Oh, that, I'm a Metamorphmagus," Tonks said simply, "I can change my appearance at will,"

"Show us," Malfoy's voice was easily heard,

"Ok," Tonks closed her eyes, Ryou got the impression that she was trying to remember something; suddenly her hair turned a blue colour,

"Wow," the class stared at Tonks with amazement, Tonks grinned,

"Ok, well, I've been told your gonna study dementors a lot now, even though I now a lot of you already know how to defeat a dementor," Tonks looked at Harry who grinned.

"Right, everyone get your books out, you can study first, then we'll practice," Tonks said cheerfully,

(Hey Yami, can I take over for this lesson ?)

((Of course Yugi))

There was a flash of light as Yami retreated to his soul room; Yami Bakura decided this lesson wouldn't be as fun, so he also let Ryou regain control.

"Err, Tonks, were new," Yugi decided he might as well tell Tonks,

"Oh, ok, well, your probably best to study dementors anyway, just in case they join Voldemort," Tonks replied,

"Ok," Yugi nodded in understanding.

The lesson finished, Yugi, Ryou and Marik left grinning,

"That lesson was cool," Yugi said,

"Yeh," Marik and Ryou agreed, Ron and Hermione turned to leave, but Harry hung back,

"Aren't you coming ?" Ron asked,

"I'll come in a minute," Harry replied,

"Ok," Ron shrugged and walked off towards Gryffindor common room.

Tonks smiled as Harry walked over,

"That was a great lesson," Harry said happily, Tonks smiled,

"Thanks, I didn't really want to be the DADA teacher,"

"Why not ?"

"Well, I don't really want to teach, plus I've got other things to do,"

"Like stuff for the Order,"

"Yep, but Dumbledore said that there wasn't anyone else he could trust, even though I can thin of loads of people from the Order,"

"He probably thought you'd be the best teacher," Tonks laughed at this, Harry smiled,

"I should go, Hermione and Ron will wonder were I've gone," Tonks nodded, Harry turned and walked away,

"Bye … Professor,"

"Hey !" Tonks shouted after him, but Harry just grinned and ran off towards the common room.

When Harry finally got to the common room he found Ron playing chess against Yugi, who was staring in amassment as Ron's knight 'killed' Yugi's castle, Ryou was watching, sometimes helping Yugi, Hermione was revising (again) and Marik was attempting to change the book in Hermione's hand into a beetle,

"You haven't even been to McGonagalls class, you'll never get the spell right," Marik scowled, and went to watch the chess match, but soon got bored.

Harry sat next to Ron who was deep in thought and didn't notice him; Marik glanced over at Harry and grinned,

"Wanna duel ?"

"Huh ?" Harry was confused, so Marik pulled out his deck of duel monster cards, "oh, I forgot how to play, and I don't have a deck," Marik rolled his eyes, then attempted to show Harry how to play, but soon gave up because his cards were making Harry feel uneasy.

Ron and Yugi's chess game soon came to an end, with Ron just winning, Yugi decided to teach Harry duel monsters with his cards, and had a little more success than Marik.

That night Yugi lay down in bed happily, it was only the first day and he was already enjoying himself.

Ryou sat down on his bed, smiling, Hogwarts was great, and his Yami hadn't even got him a detention yet, plus he had three new friends, Ryou lay back, remembering the day he got his letter to Hogwarts, that seemed so long ago, he glanced over to were Marik was playing with his wand, luckily he still hadn't figured how to turn anything into a beetle, Ryou shut his eyes, and slowly drifted asleep.

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Longest chapter so far I chose Tonks to be the DADA teacher because I haven't read a YGO/HP fanfic were she has been the teacher, and all the other reasons are stated in the story, review please.