A/N: Wasn't expecting the response to this at all. xD Enjoy the next chapter!

Warnings: Yes, this is a crossover. However, you do not need to know anything at all about Harry Potter. All that needs to be explained will be. If you do know about Harry Potter, you'll just have a sight advantage.

The companion fiction to this is If Only You Knew, told from the Harry Potter characters' point of views. But, as I said, there is no need to read that story or know anything about Harry Potter in order to understand what's happening in this fiction. I do encourage that you do read it, though, if you want the full experience of the universe I've created.

Image Songs: If you imagine Byakuya – True Light (the piano version, of course) from D. playing during the piano scene, you'll understand what I mean. Also, Lugia's Song from Pokémon: The Movie 2000 (known in Japan as Revelation Lugia) is what I was thinking about during the Missus ceremony.

Disclaimer: I don't own Yuugiou (Yu-Gi-Oh), Harry Potter, or the image songs.

Divided in the Darkness, United in the Light

Written by Fenikkusu

Chapter 4: Oboete Iru (Remember)

Yuugi wasn't quite as surprised when he found himself standing in the murky darkness once again. He rubbed his arms up and down to ward off the chill as he looked around.

"You're here again, Aibou?"

At the all-too-familiar baritone voice, Yuugi jumped. He swiveled around in an attempt to spot the source of the sound. "Mou hitori no boku? Wait, no… A-Atem?" Only the darkness answered him.

A pause. "Perhaps."

Yuugi clenched his fists at his sides. "W-Why can't I see you?"

This time the response was immediate. "You're not yet strong enough, Aibou. As I have previously mentioned, once you have developed your abilities we will be able to speak face-to-face. You have met your Magistra, no?" The voice chuckled softly. "Patience is a virtue, little one."

"Without your light, Little One, I may very well have been consumed by the Shadows." Yuugi tensed in his grip, causing immediate concern to flash in the crimson irises.

"I'm not little," Yuugi mumbled under his breath.

"Little one, you are seventeen years of age. I am a 3000-year-old spirit. You will always be little to me." A wry chuckle followed the comment, causing Yuugi's breath to catch.

After another period of silence, Yuugi spoke up. "Mou hitori no boku? Is… is it true that the Items are back?"

"Unfortunately so."

A gulp. "There's a b-boy… who looks and acts like you," Yuugi began slowly. "But you're here… Aren't you supposed to be in the afterlife?"

"Supposed is the key factor, little one. Once I walked through those doors, I found myself trapped here, in the Shadow Realm." The voice paused. "Rafael was correct in his assumption when we first met, Aibou. I committed many, many sins as pharaoh."

Yuugi snapped his head up. What was Atem talking about? "What?"

The voice breathed in deep. "The greatest of them all was suicide." Yuugi froze, allowing Atem to continue. "My consort… she died protecting me, all of those years ago. In my rage, I ended up killing myself. You could say that I am now paying a price for the taboo which I broke."

Consort? Yuugi's heart clenched, and although he knew the reason why, he wasn't about to admit it, even to himself. Who was she? Did he really love her? Does he love her still?

"Aibou—no. Yuugi… Love makes even the most ferocious men fall." The teen winced at the use of his name. The tone was very much like a parent scolding a child. "Hindsight is 20/20, is it not? I regret the decision now."

"So is that why you're here and not… wherever you're supposed to be?"

"… Partially. I also had some unfinished business to attend to. I've since taken care of most of it." The shadows shifted one more. "Our time draws to a close, Little One. Please, do not seek me out once again. I… I do not wish anymore heartache upon you."

Yuugi whirled about as the world fell apart, panic filling his gut. "Wait! Don't leave!"

He woke up crying. The boy slowly sat up in his bed and wiped the tears from his cheeks with the palms of his hands. Yuugi brought his knees to his chest, wrapping his arms around them. Silent sobs wracked his form. Just how much more can I take?

Every night it was a different dream, and they varied in intensity. But this latest one… Yuugi curled further in on himself. It was as if Atem had been torn away again, just as he had been that fateful day just over a year ago. I don't understand! Yuugi shouted mentally. Why is Atem there? Was that even him, or was that a figment of my imagination?

A knock at his door brought him out of his thoughts. "Yuugi-kun? Can we come in?" Ryou's voice drifted in from the other side of the room, beyond the closed door.

"Uh, sure!" Yuugi sputtered after he uncurled himself. His eyes widened as his friend walked in, followed by Kiseki. They both wore shades of white, but the robes were missing. "Where are your regular clothes?"

The two shared a look before Ryou continued. "Today is a special day," he began. "We're having a funeral of sorts."

At the word funeral, Yuugi frowned. "For whom?"

"There was a boy destined to save wizardkind," Kiseki continued. "His name was Harry Potter. He was killed over the summer, you see, and it's my—our, now—job to see that his spirit makes it to the afterlife. You're welcome to help out, if you want. But you gotta sort out what's happening in here, first." The sorceress pointed to her heart.

How does she…?

Kiseki merely smiled. "You'll learn in time. I don't need any magic to tell that much, though it certainly does help. I would rather not use Legilimency or Empathy on you while you're in such a fragile state. Even with the rest, your Inner Magic has yet to completely refill itself. This is as good as it gets for now." She walked over to Yuugi, extending a hand. "You won't get any better by lying around all day. Up, up!"

Yuugi was determined to ignore the odd spark which occurred when their hands touched. He blew it off as another side effect of his newfound Inner Magic, instead. "Um, where are we going?"

"We'll call it your first official lesson. Ryou, how long do we have until the ceremony?"

The albino pulled out a wand and pointed into midair. He cast a Tempus and commented, "We have an hour, Magistra."

Kiseki clapped. "Oh, goodie!" A wave of her hand immediately transfigured Yuugi's sleeping clothes into an outfit identical to Ryou's. Yuugi jumped back at the sudden change, while Kiseki giggled at his reaction. "Follow me, boys!"

As they were weaving their way through the hallways, Yuugi looked around in amazement. The moving portraits and staircases only continued to dazzle him. "How… How did you get so used to this stuff, Ryou-kun? This is all so… surreal."

It was Ryou's turn to laugh. "As I said before, Yuugi-kun, I've been here for at least a year. My first reactions were much like yours. After a while you'll find that even though magic can make a lot of things possible, there are some rules that you can't break. And if you break them, there are serious consequences."

He kept his mouth shut as he was led up and up. How did people's legs not ache if they had to walk up and down these stairs every day? The first time Yuugi stepped on a moving staircase, he nearly toppled backwards off of it. Thankfully Kiseki was there to catch his fall. It was almost as if she knew exactly where he would trip. For a moment Yuugi wondered how she was so prepared until he realized she possessed the necklace.

But one look up said that she wasn't wearing it. Why…?

"Here we are!" Yuugi blinked out of his thoughts at the woman's exclamation. A blank wall sat in front of them.

Even Ryou raised an eyebrow. "Why are we on the seventh floor, Magistra?"

Kiseki held out a hand to keep the boys still as she walked up to the wall. She closed her eyes and began to pace in front of it. Yuugi counted seven times before the stones began to melt away. A few seconds later, an arched doorway appeared. Both Yuugi and Ryou followed her into the new room. All kinds of instruments littered what appeared to be a music studio. A grand piano sat in the middle, a guitar and violin flanking it. The walls were covered in soundproof cushioning.

"Do you play any instruments, Yuugi?" Kiseki asked, sitting on the piano bench. She opened her arms wide. "We've got everything imaginable here!"

Just how long had it been? Yuugi nodded absentmindedly, his gaze straying to the piano. He used to play as a kid, back when his parents were still together. When his father left, Yuugi and his mother had moved in his grandfather. The Game Shop was too small to house a piano. He was actually saving up for a keyboard when the Millennium Item adventures began.

I wonder if I still remember how to play, Yuugi thought when Kiseki waved him over. She scooted to the side, allowing the teen to sit in the center of the pristine black and white keys. He didn't see Ryou pick up the violin and Kiseki pluck a flute from a nearby stand. After a deep breath, he began to play.

Yuugi wouldn't be able to explain what exactly happened that day. His fingers began to move of their own accord. His eyes slipped shut as his emotions began to flow into his music. His frustration, his anger, his fear, his elation, his love. He barely noticed the violin and flute playing in the background. It was as if they were only there to help guide the melody he himself was playing.

He couldn't help the tears which fell from his eyes. They slipped down his cheeks, landing in tiny puddles in his lap. His body shook with the release of the emotions he had been withholding over the last year. Yuugi bit his lip to stifle a sob. No, he had to be strong. Strong people didn't cry. It was bad enough that he was crying already.

A gentle touch caused that sob to escape. Opening his eyes, Yuugi saw Kiseki sitting back down on the bench and gripping his shoulder. "You can stop if you want." Her voice came from everywhere at once, and yet it wasn't overbearing. "We will think nothing less of you if you do."

A part of Yuugi desperately wanted to high-tail it out of there. But something deep inside Yuugi's soul rooted him in place. Who was he kidding? Resistance was futile. He merely shook his head and continued, his music calming down as he did. The reassuring hand only tightened in response. The sensation of someone holding him wasn't completely foreign, but the last time he had felt this way… Yuugi honestly craved the contact.

When he could take it no more, Yuugi ended the song with a fading high note. As soon as the note faded, Yuugi broke down. Sob after sob began to wrack his tiny body. Somewhere in the midst of his suffering he was pulled into a tight embrace. Yuugi could feel how Kiseki shook along with him, as if she was suffering the same pain.

"I can't promise that it'll all be okay immediately," Kiseki's hoarse voice whispered. "I won't promise you the impossible. But I can promise you that it will be okay." She ran a hand through his long hair in some sort of comforting gesture. "I'm truly sorry. Had I known that your melody would be so… powerful, I wouldn't have introduced this aspect of our magic so early on."

Yuugi could only sniffle and nod against her shoulder. He pulled away only slightly, and it was then that he saw the redness of her eyes too. A movement told him Ryou had settled on the other third of the piano bench. "That was Empathy, Yuugi-kun," Ryou began. "As a Light Elemental, your Inner Magic reacted to the conflict in your heart. Magistra and I helped control your emotions by playing along with you. This was all you."

How? He'd never even played that song before; he wasn't even sure if it was real! Yuugi shook his head in disbelief. Kiseki quickly shushed him. "You'll understand soon enough, Yuugi. Don't you feel better? You released a bunch of tension during your performance."

Come to think of it… Yuugi placed a hand on his heart. Although it still raced, overall Yuugi did feel better. A tiny smile crossed his countenance at the realization. He raised his gaze and locked his amethyst one with a golden one. Kiseki's eyes twinkled happily upon meeting his.

"Don't worry," she placated. "With time and training, you will grow strong. Perhaps, then, you will be strong enough to see him again."

At the familiar words, Yuugi gasped. How could she possibly know? He didn't have the Puzzle anymore, and she wasn't wearing the Millenium Tauk. There was some other magic at work, and Yuugi wasn't quite so sure if he wanted to know about it yet.

"All right. It's time for the Missus ceremony." After scrubbing her eyes with her long sleeves, Kiseki nodded. "All I'm asking of you is to play the piano again, Yuugi. But instead of following the melody of your own heart, you'll be following mine. Just trust me, okay?" He nodded. "Awesome!" She stood up with him and pressed a kiss to the crown of his head. Yuugi couldn't hold back the last tears which fell. "I'll need to pick up another student, so why don't you head out with Ryou? I'll meet up with you guys in a few." With a wave, she scurried out of the room.

When Yuugi was left alone in the music room with Ryou, he watched the other teen carefully. His long white fingers handled the violin as if it were made of porcelain. Ryou caressed the bodice of the instrument once before placing it back in its case along with its bow. When Ryou made sure everything was right, they walked out together. The door disintegrated behind them leaving only a blank wall.

It was Yuugi who broke the silence. "Hey, Ryou-kun? I have a few questions to ask."

The other nodded. "What is it?"

Yuugi nibbled at is bottom lip. "I know this will sound crazy, but yesterday I met a student here who looks exactly like mou hitori no boku. He said he had a brother named Akefia, so I'm wondering if…?"

"He's here too," was the quiet reply. Ryou kept his gaze forward as they walked. "I've been here ever since the gang split in Egypt, remember?"

"But brothers? Do they even get along?"

There was a tiny laugh, one so small Yuugi had to strain to hear it. "You would be surprised. They do tend to bicker since their personalities clash." Ryou led the way down the labyrinth of staircases to the main double doors of the school. "He's… Both of them don't remember anything."

Yuugi frowned. "Do you think there's a chance, any chance that they'll remember? Are they reincarnations or something?" The rational half of Yuugi wondered why he was so transfixed on the idea that there was a part of the man he knew lurking behind Amun's eyes.

The other teen clutched his violin a bit tighter at the question. "I…" he began softly, "I honestly don't know. Just don't get your hopes up. Yuugi-kun." He paused long enough to catch Yuugi's eyes. A deep pain was in Ryou's but from what exactly Yuugi couldn't decipher. "There's always a chance that this isn't even the same spirit. We did see him walk through the doors to the afterlife. The ring was lost with the rest of the items, but since Magistra has the Tauk, I don't know what to think anymore."

The rest of the walk was quiet. Instead of continuing the conversation, Yuugi chose to observe the surroundings. Hogwarts campus was huge; hills, valleys, and plains extended as far as the eye could see. A dark, dense forest lined the very edge of the meadows on one side, and Yuugi mentally noted to avoid it. He saw a sea of people across the way. Just how important was this person to have so many people attend his funeral?

In a nearby valley sat a huge sakura tree. Its pink petals fluttered in the gentle autumn breeze, some drifting to the ground. Yuugi was so transfixed upon the tree's beauty that he barely registered Ryou's hand on his arm. Glancing down, Yuugi saw that Ryou had slipped out of his shoes. Yuugi did the same. When they took the next step together, Yuugi discovered why.

Warm magic wrapped around him like a security blanket. The gentle scent of the cherry blossoms from earlier intensified tenfold. Yuugi took a deep breath and sighed in relaxation. When was the last time he had felt so safe? It was as if nothing would be able to hurt him here.

"This is Magistra's Empathy," Ryou finally said. He too looked completely worry-free. "Doesn't it feel awesome? I haven't learned what causes it exactly, but this is what we'll be able to do when we get stronger." He led Yuugi closer to the tree, where Yuugi spied another piano. This baby grand looked exactly like the one in the Room of Requirement. How did it get out here so quickly?

Kiseki stood next to the sakura tree, wielding a long golden staff. She was talking to a boy about their age. A dark-looking man grabbed both of their attention, and Kiseki ended her conversation with the other student. She smiled as she walked over to Yuugi and Ryou. "Just in time! You two ready?"

Yuugi bit his bottom lip. "Um. What am I supposed to do?"

The sorceress placed a hand on his shoulder. The warmth also increased, seeping down to his very bones. The Empathy draped over his heart and layered over the turmoil he still felt. He was led over to the bench and sat down. "Listen to your heart, Yuugi," was the whisper in his ear. "My own will guide the way. Trust me, you'll understand in a moment." Her hand slipped from his shoulder, taking the majority of the warmth with it.

Listen to my heart? Yuugi asked himself. He could hear his teacher chanting and dancing behind him, but something told him that it didn't matter. Listen to my heart… what does she mean? She said it herself: his heart was in turmoil over so many things. Yuugi missed his other half terribly, and on the first year anniversary of his departure, he's whisked here to a magical school he didn't even know existed. On top of all of that, there's an Atem lookalike who he had to save using a kiss. What was the world coming to?

For whatever reason the word dissonance came to his mind. He went back to his lessons with his piano teacher years ago. Yuugi remembered asking her why she was showing him how to play wrong-sounding notes on purpose. Then she had carefully gone into the theory of consonance and dissonance and how some composers purposefully placed them in music in order to reach a resolution by the end of the song.

Dissonance, turbulence, it was like life… relationships. Like how there were battles and arguments, and those served a greater purpose than making Yuugi feel badly. With each one his heart had become stronger. He learned something with each duel, each situation he and his friends found themselves in. He could remember first discovering that he had a spirit resting within his Millennium Puzzle. He could remember barely stopping him before Kaiba fell to his death at Duelist Kingdom. He could remember the Seal of Orichalcos and how it tore him apart from the pharaoh. He could remember the Ceremonial Duel and its conclusion.

There was a reason that he was here, even though Yuugi didn't know exactly why yet. To listen to his heart he needed to pick apart each incident and ask himself why it happened. Maybe, if he eventually figured it all out, he wouldn't feel so conflicted anymore. Yuugi had time. He had Ryou and Kiseki. Maybe Amun would even help him too.

Kiseki's Empathy washed over him again, and it was as if ghostly hands positioned his own. It was Yuugi's choice to press down on the keys and begin to play. Like earlier he didn't know what he was playing when. All he knew was that it sounded beautiful, a mix of resonance and dissonance dancing about each other. Light began to gather at his fingertips, leaving lines whenever he moved to play a different note. Brighter and brighter it became, faster and faster the music moved. Yuugi found himself playing an increasing crescendo as the climax of the music approached, and suddenly—silence.

Yuugi gasped as there was a lull in the music. He swirled his head around and saw that the light which emanated from him had drawn runes all around him. Looking to Ryou he saw the same happen with his friend. Yuugi saw what he assumed to be Kiseki frozen in a posture of absolute prayer. Four spirits surrounded her in the shape of a badger, raven, snake, and lion regarding her with deference. She slowly opened her eyes and raised her staff to the heavens. The runes sped from Yuugi's and Ryou's sides to gather at the tip of the staff.

"Please accept the prayers of those who have come here today as well as those who are only here in spirit," Kiseki chanted. "Use this Light as a beacon of hope and guide your child's soul to the realm above." A beam of light exploded from the top of her staff into the sky, separating clouds. It seemed to go on forever, thinning the higher it went. "And so it concludes," Kiseki intoned, striking the bottom of her staff against the ground. A wave of light was released, scattering the spirits and auras summoned into tiny particles. The beam of light also dissipated leaving only the blossoms of the sakura tree lit.

Everyone stood in awe of the spectacle that was the end of the Missus ceremony. Even Ryou's mouth had dropped open. Kiseki smiled at the crowds before saying, "You may all come to pay your respects to Mister Potter now. The ceremony was a success thanks to your fervent prayers for him." She bowed and stepped towards her apprentices.

Ryou immediately rushed up to her. "Ma-Magistra! Are you all right?"

She waved him off as he tried to support her slightly slumping form. "I'm just drained."

"Are you sure that yo—"

"Ryou. Enough." At the order, Ryou took a step back with a frown. "We went over a ton of stuff today, so I think that we should call it. I'll see you boys at dinner." Kiseki nodded to both of them and began the walk back to Hogwarts alone.

Yuugi reached out a hand. He still had so many questions that weren't answered, but she looked so tired. Her Empathy still surrounded them, and Yuugi idly wanted to know how much effort it took to make her magic nearly tangible like this.

"Do not fret, Ryou." Both Yuugi and Ryou turned to see the dark-haired Egyptian man from earlier step up to them. He wore a crimson collared shirt and black tie. The rest of the outfit was black as well, including a long cloak which fluttered behind him. "I shall make sure that she makes it to your rooms safely."

"Thank you, professor," Ryou replied with a touch of relief.

The man held out a hand with the palm facing them. "No thanks are needed. She needs to teach herself how not to push herself so hard. I have only known her for a few days, but already I know she is far too sacrificial for her own good." He paused, seeming to size them up. "All of you are." Then he nodded to Yuugi. "Amun has not been quite the same since your intervention. I thank you. And do not wave it off as nothing; there are people who would get quite offended if you do not accept the gratitude, myself included." With a swish of his cloak, he walked past both of them.

A red-tailed hawk sat atop the tree, observing the whole scene. It blinked its ruby eyes and nodded at the two boys. With a flap of its wings it took flight, disappearing into the sun.