A/N: Okay, it seems like my updating speed is gonna be random, since I work on a chapter whenever I'm bored or whenever I have free time. But it should be roughly once or twice a week. I got a few questions asking about pairings…well I was planning to keep them secret, and let you find out as you read…but who knows, I might change my mind by the time I'm done writing this chapter! Anyways, thanks for the reviews, everyone :)

Legend:

Blah or "Blah": normal speech (English)

'Blah': thoughts

Blah: flashback

"Blah": Japanese speech

0000000000: scene change or different POV

Disclaimer: I do not own Naruto or Harry Potter.

Chapter 2: Hogwarts Express

"Stand right here, boys. And I strongly advise you not to let go until I say so."

Sasuke, Neji, and Dumbledore stood in a triangle-like formation, each person gripping the end of an old and mouldy sock. At first, Neji and Sasuke had been skeptical when Dumbledore had told them that the sock was the 'portkey'. What a portkey was, the two ninjas didn't know. But what they did know was that magical people had a very strange way of traveling. Dumbledore had spoken to them about Apparating as well, but had told them that they were still 'underage' at the moment and they had to take a 'test' later in Hogwarts. So, the two well-known prodigies in Konoha were forced to stand in a cramped storage room of the hotel they had been staying in, pinching the end of a rather disgusting sock.

"We magical people like to be discreet," Dumbledore had explained to them. "We can't afford to be disappearing in front of muggles in broad daylight, holding on to some enchanted object." Again, that word. 'Muggle'. This time, Neji remembered to ask him.

"What exactly is a muggle?" He asked.

"A muggle is basically a person with no magical blood in them whatsoever. It is not particularly a pleasant name, but there really is no other name to call them." Dumbledore replied heavily, looking grave.

"So…what does this…'portkey' do?" Sasuke asked. He was glaring at the old sock as if he wanted to burn a hole through it.

"Well, when the time comes, it will transport us to our destination." Dumbledore replied. Sasuke was not satisfied with the simple answer, but he did not say anything.

"I wonder how the idiot and Tenten are doing." He muttered to Neji, who shrugged.

"Naruto might be a pain, but at least Tenten is with him. She's used to dealing with Lee and Gai." He muttered back.

"And you're not?" Sasuke asked with one eyebrow raised.

"Hmph," was Neji's irritated reply. "Well anyways…With Tenten there, I doubt anything serious would happen."

'You never know, especially with that idiot around…' Sasuke thought, but he let the conversation drop. 'Not that I was having a conversation with Hyuga.' He thought firmly to himself.

"It's time," said Dumbledore suddenly. "Hold on tight." Sasuke and Neji were just able to grip the sock harder, until a force lifted them up without warning, and soon they were spinning…

0000000000

"Whoa, look at that!" Naruto yelled excitedly, pointing to a bright red train. "Whoa, that one's cool too!" He pointed to the train beside it.

"…Naruto. They're exactly the same; they just have different numbers on them." Tenten pointed out, but Naruto didn't seem to have heard her. Tenten sighed. They had been wandering around the train station for at least an hour, trying to find 'platform nine and three quarters'. The place was massive – it took a while to find platforms 9 and 10, but they were taken aback to find that platform nine and three quarters did not exist. Tenten checked her watch. It read 10:45. They had 15 minutes left to get on the train.

"Naruto, help me search!" Tenten exclaimed as she caught Naruto heading towards a tiny stand that sold snacks.

"But platform nine and three quarters doesn't exist! That stupid old man, I bet he's playing a joke on us. And I'm hungry!" Naruto complained, and Tenten sighed.

"Naruto, I really don't think our client would play a joke on us. Think logically! It has be here somewhere." Tenten glanced around the area once again. Dragging Naruto and her trolley, she stopped in front of the barrier between platforms nine and ten. She felt some strange chakra-like energy radiating from the spot, but she didn't know what to do.

'Should I blow it up?' She thought, fingering the explosion tag hidden in her pocket.

"Hey Tenten, look!" Naruto called. She turned towards him just in time to see a blur pass by her and disappear into the barrier. For a moment she stood there, as realization dawned upon her.

"See? See? They went into the barrier! Maybe that's how we can get into platform nine and three quarters!" Naruto yelled excitedly. Tenten nodded.

"I guess so. Let's go for it." Pushing their heavy trolley so that it would crash into the wall before them, Naruto and Tenten stood a few feet away from the barrier, and broke off into a fast-paced walk. Tenten half-expected to crash into the solid ticket box, but she was surprised as they seemed to pass through nothing. When the two ninjas looked up, they found themselves staring up at a scarlet steam engine, packed with people and a sign overhead that read 'Hogwarts Express, 11 o'clock'. Tenten glanced behind her to see that the barrier and ticket box was now a wrought iron archway with the words 'Platform Nine and Three Quarters' on it.

"We did it!" cheered Naruto. "Wow, look at that thing. It's huge! Let's go, Tenten!" Tenten felt herself being pulled towards the train by an enthusiastic blonde.

"N-Naruto! Wait!" she protested, but they were already on the train. "Fine…let's find an empty compartment." After a bit of looking, however, they found that most of the compartments were full.

"I guess we'll have to share with other people?" Naruto suggested, and Tenten nodded.

"I guess so. Be careful not to mention anything that could blow our cover, okay? This means, no talking about our mission, ninjas, and Konoha." She warned, and Naruto nodded with a carefree grin.

"Don't worry! Everything's gonna be fine!" He said happily. "Hey look, that one isn't too full." He pointed towards a compartment near the end of the train. It seemed to have a few people in it, but it wasn't as crowded as the other ones.

"Okay, let's go." They walked towards the compartment, and they opened the door.

0000000000

A boy with jet-black hair, a pair of round glasses over emerald-green eyes, and a lightning bolt-shaped scar on his forehead yawned loudly as he sank into the compartment seats.

"What's wrong, Harry? Didn't get enough sleep?" His red-haired friend asked with a grin on his face. Harry stifled another yawn and nodded slowly.

"Yeah. I had this weird dream last night…" He said, frowning. A girl with bushy brown hair looked at him with concern.

"Was it about Voldemort again?" She asked, careful to lower her voice so that people outside wouldn't hear.

"I'm not sure," Harry replied. "Actually, I forgot most of it. I just got a really odd feeling from it, that's all." He plastered a grin on his face. "So, Ron, Hermione…did you hear about anything interesting?" His two friends shared worried looks, but they decided to drop it and went along with Harry's sudden cheeriness.

"Not much," Hermione said brightly. "But I heard we're getting new students this year!"

"We get new students every year, Hermione!" Ron corrected, rolling his eyes. Hermione crossed her arms impatiently.

"No, I'm not talking about first years! I mean, new students the same age as us, are coming to Hogwarts!" She exclaimed.

"That's…unique." Harry concluded, not really knowing what to say.

"Definitely." Ron agreed. The three friends jumped when there was a sudden knock on the compartment door, and the door slid open.

"Hey, all of the other compartments are full. Mind if we sit here?" a girl asked politely. Harry, Ron, and Hermione looked up at the two strangers. There was a pretty girl with brown hair tied into two long pigtails, and friendly chocolate-brown eyes. The boy next to her had sunny-blond hair that was spikier and messier than Harry's, and bright blue eyes. He also had three markings on each cheek, almost like whiskers. Both were wearing Hogwarts uniforms. Hermione was the first one to break the dumbfounded silence.

"Uh…sure." She said slowly. The blond boy grinned.

"Thanks!" He exclaimed excitedly, and chose a seat beside Harry. The brown-haired girl smiled at them and also sat down, next to her friend. As the blonde chatted enthusiastically about random things, the three friends watched the two newcomers curiously.

0000000000

'Black hair, green eyes, glasses, lightning bolt-shaped scar. Definitely Harry Potter.' Tenten thought to herself. She knew Naruto had noticed as well, because he had bounded off to sit beside their client. Dumbledore had also mentioned that Harry Potter was usually with his two friends. She hadn't heard their names though. There was a rumbling noise as the train blew smoke and started moving. Outside the window, parents waved at the leaving train, and she could see many outstretched hands from the other compartments, yelling their final good-byes to their families. She turned towards the people in the compartment. They were staring at her and Naruto incredulously, and she suppressed the urge to sweat-drop.

"Um, hello. I'm…Tenten." She said slowly, waiting for a reply.

"And I'm Naruto!" Naruto added, grinning. Once again, the bushy-haired brunette girl spoke up first.

"Oh. Um, hello," she said, clearly sounding nervous. "I'm Hermione Granger. And these two are Ron and Harry." The red-haired boy seemed to have shaken out of his trance.

"Hey there," he said weakly, trying to grin. "Ron Weasley." And finally, their client spoke.

"Er, I'm Harry. Harry Potter."

0000000000

Sasuke and Neji lay on the damp ground, breathing slowly as they tried to calm their queasy stomachs.

'Portkeys…' Neji mused, closing his eyes to stop the pounding in his head. 'What a ridiculous way to travel.'

'That was worse than that Floo network thing.' Sasuke thought bitterly. He glared at Dumbledore, who seemed perfectly fine and was peering at the two boys with amusement.

"How was the ride, boys?" He asked, smiling.

"Hell." Neji muttered.

"Worse than hell." Sasuke corrected, and Neji nodded in agreement after a short pause. Dumbledore chuckled.

"Well, you get used to it after a while. Oh," He said, looking at his watch. "I believe the train has left a few minutes ago. Shall we go to the castle?" Neji and Sasuke got to their feet gingerly, as the world seemed to spin around them.

"Where is the castle?" Neji asked looking around. They seemed to be in a cool, damp forest.

"Ah. You see, Hogwarts is enchanted so that no one can travel directly into the grounds using a portkey, Apparation, or anything of the sort. Same goes for traveling outside of Hogwarts." Dumbledore explained. "We'll have to walk from here. No worries, it's not too far." The two ninjas nodded. At least there wouldn't be any more crazy traveling methods.

After some walking, Dumbledore pointed ahead.

"That is Hogwarts." He said with a fond smile. Neji and Sasuke looked towards where the elderly wizard was pointing. As the sight came into view, their eyes widened.

"Holy sh-"

0000000000

"A-CHOO!" Naruto sneezed loudly. Tenten looked at him curiously.

"Bless you." Hermione said quietly. The ride had been mostly quiet so far. Not that Tenten minded much, but Naruto was getting impatient.

"Aw, this is boring! I wonder how Sasuke and Neji are-" He was cut off by a sharp glare from his female teammate. The three friends seemed to have noticed this, however.

"You have more friends?" Ron asked, not sounding very enthusiastic.

"Where are they?" Hermione asked, frowning. Tenten sweat-dropped.

"They're…not here." She replied, keeping her face as calm as possible. The two didn't seem content with the answer, but they didn't continue.

"Who ARE you guys anyway?" Harry asked suddenly. It was a question that Ron and Hermione had wanted to ask as well.

"We told you, I'm Naruto and she's Tenten!" Naruto replied cheerfully, looking out the window.

"No, I meant, where did you come from? We've never seen you two before." Harry asked again. He was definitely suspicious. Naruto and Tenten exchanged quick glances.

'This is getting out of hand. We weren't supposed to encounter these guys so soon!' Tenten thought, narrowing her eyes. She knew that she couldn't make anything up, since Dumbledore was bound to tell them the truth later.

"The old man will tell you guys later, okay? Don't ask." Naruto replied, sounding bored. Now the three friends were confused.

"The old man?" Ron repeated.

"Who's that?" Hermione asked, her frown deepening.

"Albus Dumbledore." Tenten corrected quickly, nudging Naruto in the ribs.

"You know Dumbledore?" Harry asked, now sounding interested.

"You…you just called him an old man!" Hermione exclaimed, not sounding offended but slightly taken aback.

"So? He IS an old man." Naruto said simply. He yawned. "Man, this ride is BORING." As he looked outside the window, he noticed something before it disappeared. He sat up, frowning.

"What is it?" Tenten whispered. She had felt a presence outside the window as well.

"I dunno. What do we do?" Naruto whispered back.

'That presence wasn't friendly at all. Could it be…the enemy ninjas that Tsunade mentioned before?' Tenten thought, tensing slightly. Harry, Ron, and Hermione were looking at the now-tense newcomers with curiosity.

"Is…something wrong?" Hermione asked tentatively. Tenten smiled reassuringly at her.

"No, it's nothing." She said quickly. She slowly reached for the weapons that she had hidden inside her robes. She saw Naruto doing the same.

'Better get ready…'

0000000000

A woman smirked as she whipped her head up from the window.

'Two ninjas,' she thought. 'I'm surprised they didn't send more. But I admit that I'm also a little disappointed.'

"Asuka," said a gruff voice from behind her. "Did you see them?"

"Yes," she replied. "But only two of them are on this train. The other two must be at the castle already." The man crossed his arms.

"They obviously didn't expect us to attack, then. Do they even know about us?" Asuka shrugged.

"They might have detected my presence. Makoto, I saw them. They're only children." She said, sighing. The man, Makoto, laughed.

"Children? Didn't you say they were Konoha's elite Anbu's?"

"They are. I felt their chakra. Both have formidable skills, for sure." Asuka replied.

"Alright then. So, our plan?" Makoto asked with a sinister grin on his face. Asuka smirked.

"Stick with the original." She commanded. "Those two are going to come find us once they sense trouble."

"Fine…What happens if they interfere?" Asuka winked at her teammate.

"You can take care of them. Just don't kill them, or else you're gonna get in trouble." Makoto sneered.

"Roger."

0000000000

"Did you feel that, Naruto?" Tenten muttered.

"Yeah," Naruto replied. He lowered his voice. "There are people on top of this train, and they're definitely ninjas. Should we go after them?" Tenten frowned.

"We're not supposed to attract attention. These three are already suspicious." She whispered, stealing a glance at the three friends. Just like Tenten and Naruto, they were talking amongst themselves and occasionally glancing at the two Konoha ninjas.

"Yeah, but what if they're here to assassinate Potter? We're gonna have to deal with them anyway." Naruto argued.

'This isn't good. How can we stay undercover but fight enemy ninjas in public?' Tenten thought, crossing her arms. Finally, she sighed.

"Alright. We're going to see what those ninjas are up to. We can't just leave them. But wear your Anbu mask. They might know our faces, but we can at least prevent the students from seeing our ninja selves, right?" Tenten said with a small smirk at the end. Naruto grinned.

"Okay! Let's go! Oh, but…what about Potter and his friends?" He asked as he felt Harry staring at them. Tenten grimaced.

"They're already suspicious about us, and they're our clients anyways. Hopefully we can get them to negotiate. If not, we'll have to talk to Dumbledore as soon as possible." She replied. She usually hated being reckless, but they had no other choice. They could succeed in remaining undercover, but they would fail the entire mission if Harry Potter was killed or if the train was destroyed. The success of the main mission was at top priority. Tenten and Naruto stood up, startling the three friends.

"W-What?" Ron asked, staring at the two strangers as they rummaged through their bags. They took out what looked like eerily painted masks, and put it over their faces.

"What are those masks for?" Harry asked, frowning as they stared back at him with cold, emotionless eyes.

"We'll be back. Shout if anything happens." said Tenten as Naruto slid the window open, bringing a strong gust of wind into the compartment. Ron's face turned white and Hermione let out a small scream as Naruto perched on the windowsill and jumped.

"Is he mad?! He's going to die!" Ron exclaimed, but fell silent as Tenten told him to be quiet. She, too, perched on the windowsill before jumping. The three friends gasped as they saw the two strangers hang on to the side of the compartment before pulling themselves up. They heard a soft 'thunk' as feet landed above them.

"What are they DOING?" Hermione muttered as she attempted to steal a glance by leaning out of the window.

"H-Hermione, get back in here! It's dangerous!" Ron warned, pulling the brunette back. She crossed her arms stubbornly, but sat back down. Harry was deep in thought, trying to figure out who the strangers were.

"Their movements…they're almost like…" Harry muttered, catching the attention of his two friends. "They're almost like…ninjas."

0000000000

Meanwhile, Tenten and Naruto stood against the strong billows of wind, concentrating chakra to their feet. The slippery metal of the train and the icy wind proved to be a hindrance.

Tenten was glad that she had her mask on, since the wind would have stung her cheeks and made her eyes water.

"Do you see them, Naruto?" She called over the roaring winds.

"No but I can sense them! They're at the front!" Naruto called back, and the two ran towards the front, making sure that their footsteps were quiet. As they neared their destination, they quickly ducked into the space between two compartments and suppressed their chakra. They could sense another presence nearby. Soon they heard whispered voices.

"It's done. It'll explode in about three minutes." said a female voice. Naruto and Tenten exchanged glances as they realized what was happening.

"Three minutes? Your explosions usually take less than 30 seconds!" said a gruff, male voice.

"Be patient. I had to set a bomb big enough to destroy this whole-" the female's voice lowered, and the two Konoha ninjas had to strain their ears to hear her.

"-are here?!" the male voice suddenly growled.

"Shush, Makoto. You can take care of them. I'll do the final touches for this bomb-" Naruto and Tenten tensed as they heard footsteps heading towards them.

'Shoot, it seems like they finally detected us.' Tenten thought, her hand going to her kunai.

"Naruto. You take care of that Makoto-guy, whoever he is. Try to get information out of him somehow. I'll focus on getting rid of the bomb." She whispered, and Naruto nodded.

"Got it." He replied, and jumped out of the space they were in. From her crouching position, Tenten heard the footsteps stop.

"Well, well. If it isn't a Konoha ninja." said the gruff voice, now speaking in slightly accented English.

"You're not getting away with this!" Naruto sneered, a smirk forming behind his mask. Silently, Tenten hung on to the side of the compartment, careful to avoid the windows.

'I hope they don't make too much noise,' she thought, frowning as Naruto charged with a kunai in hand. 'If someone looked out the window, they would notice something for sure.' She crawled to the very front of the train, where she spotted a strange device covered with an explosion tag. She frowned as she looked around

'Where is the woman?' Tenten pulled out her kunai.

There was a loud CLANG as she blocked something hard and heavy with her kunai. With her other hand, she pulled out another kunai and threw it at her opponent. The woman jumped, landing a few feet away from Tenten with a smirk on her face.

"Looking for me?" The woman asked, cerulean eyes glinting as she charged once again, raising a battle axe over her head. Tenten swiftly pulled out her sword and blades met once again, neither willing to give in.

'Her strength is ridiculous! Close to Tsunade's.' Tenten thought as she pushed against the force. The woman didn't seem to be putting any effort into her attacks – Tenten found herself slowly being pushed to the edge of the train.

'Not that I'm going to let her push me off.' she thought as she pulled out a second sword from her robes. 'Damn, I can't reach the bomb from here. Is this her plan? Hold me off until the bomb explodes?' The woman blinked as Tenten released her force, making the heavy battle axe pitch forward. Tenten then disappeared; reappearing behind her and making a crisscross slash with her two blades. The woman smirked as she did a back flip to avoid the slashes. She was slightly surprised, however, to see Tenten running at full speed away from her, towards the very front of the train.

"Worried about the bomb, huh?" the woman called, and also disappeared; appearing in front of Tenten, swinging her battle axe. The two were now balanced near the side of the train – one push would cause the other to fall.

'I can't throw my weapons because of this wind…I have to think of something.' Tenten thought, cursing under her breath as the woman swung her axe once again. The impact was stronger than before – Tenten's swords were slowly being pushed down. At the last moment, Tenten pushed the axe with as much strength as she could, making the axe swing sideways. Seeing her chance, she appeared in mid-air behind the woman, swords aiming for her head. She gritted her teeth as the woman suddenly vanished.

"Over here, little girl." The woman whispered right behind her ear. Just as Tenten turned, the woman slashed with her axe. There was a spray of blood and Tenten pitched backwards, off of the train.

Naruto, fiercely aiming a roundhouse kick for the large man's chest, whipped his head around when he caught the faint scent of blood. His eyes widened behind his mask as he saw the woman appear behind Tenten, who turned around and received a slash across her chest. He could only watch, stunned, as Tenten's body sailed backwards into the air, flying off of the train. Her swords clattered onto the metal roof.

"TENTEN!"

To Be Continued…

Lol I hate when anime episodes end like that, but I couldn't resist xD Thanks for the reviews, guys! I was so happy (and bored) that I decided to write the next chapter right away! So…please leave a good review. Also, to the people who asked about pairings: I have decided what I'm going to do, but it's a SECRET. You will find out as the story progresses. Don't worry though; I'm sure you'll be able to figure it out after a few chapters. There will be some hints, after all. ;) So keep reading! Once several people know what the pairs are, I'll announce it them in an A/N in future chapters. Once again, please review:)