Summary: Thousands of years before the Kekkai Barrier was erected a power demon family ruled all of Demon World and looked to concur the Human World as well. Now the lurk in the dark, waiting to be forgotten until it is their time to strike.

AN: For the purpose of this story, I'm setting everything in modern time. I believe Yu Yu was set in the early 90s when everyone's in their mid teens, but I'm going to push everything up a bit.

"Speaking"
Thinking

Prologue

~Thousands Of Years Go – Before The Kekkai Barrier ~

The cold silence that echoed through the halls of Hollow Castle was a familiar calm to its inhabitants. Five figures stood in the cold, dim light as they waited for their final member to arrive.

"He is always late," a deep and hard voice spoke, his powerful sound breaking the icy still of the room.

"Be calm, Alunk. Zesha is probably out playing," a much softer and calmer voice said.

"Don't defend him, Balum. It is all he ever does," Alunk responded shortly.

"He's just a child," a third, more feminine voice responded with a chuckle. "He's at that age where he just can't help himself. He's meant to be playing." The room went quiet as the small group heard the sound of footsteps sprinting through the halls on the other side of a giant black closed door that sealed the room. The footsteps grew louder and louder until a small figure burst through the door. "Ask and you shall receive."

The small figure stopped abruptly in front of the group, a wild grin plastered on his face. "I'm sorry for being late," the childish voice said with glee. "I didn't realize what time it was."

The new guest, a small boy with elegant features, was covered in a dark liquid from head to toe. His moss green hair was stained with splotches and his golden eyes radiated with joy. He ran over to hug the woman who had spoken just before he entered the room. He stained her clothes and her long pale-purple hair as he squeezed her to him, which in turn made her giggle and here silver eyes sparkled with equal amusement. She patted his head gently, the black demon blood tinting her pale white skin as she did so.

"Demons again," Alunk said with an icy tone as he got a whiff of the smell of demon blood that came for the boy. "You should be hunting in the Human World, Zesha."

"But demons are so much more fun than humans. At least they put up a fight."

An elegant cough reverberated through the room, effectively gaining the attention of all persons in attendance. "My sweet children," the lyrical voice said from the darkest part of the room. Her outline could barely been seen in the dim light as she sat in a large throne, but they didn't need to see her physical appearance. Thousands of years living together left nothing to the imagination. "As happy as I am to have you all home again, I'm afraid I have to troubling news." Five pairs of eyes looked upon the owner of the voice, all with different emotions reflecting upon their faces. "Spirit World is making a most unfortunate move against use. They are planning on creating a barrier between the Demon World and the Human World."

The woman was met by a mixture of responses. Annoyance, anger, amusement, passivity and boredom.

"They can't do that. Can they, momma," Zesha asked in his childish voice.

"Of course not." Shi spoke with a stern, yet irritated voice. His piercing rose red eyes shined in what little light was in the room. "Spirit World doesn't have that kind of power."

"But they do, my son," the woman replied softy. "The arrogant King of spirits has found a way to block most of demonkind from leaving Demon World for good." The woman was met by her children screaming over each other.

"How dare they! What makes them think they can cage us like animals?" Alunk's midnight blue eyes spoke volumes of disgust.

"They're doing this just to antagonize us," Shi spit out as he backed his brother. "They want to start a war with us. Clearly they haven't learned anything."

"If this is true, then we should recall those who are currently in Human World," Balum said calmly. "We need to bring them back and-"

"That is enough, children." The woman's voice elevated, but was still soft enough to be stern. "I know that this is an...inconvenience for us, but I have already set a plan into motion." Her head turned to face the young woman to her left. "Mui, you are going to go to Human World before the barrier is erected."

All eyes turned to the young woman. Zesha loosened his grip on the woman he clung to and looked up at her. "You're...you're leaving us," he asked as he childish voice started to break.

Mui's gentle face and silver eyes held a smile for the boy. "It looks like I am," she replied softly. She turned her face to the woman on the throne, her smile fading. "What would you have me do, mother?"

The smallest of smiles graced the hidden woman's face. "Live amongst the humans, my dear. Sleep until those fools in Spirit World forgets about us. And when the tim-"

"No," Zesha screamed. "No, she can't leave. I won't let her." The air the room became cold and a breeze with seemingly no origin began to pick up as he squeezed his big sister tightly. "Momma, you can't let her leave!"

"Stop your crying," Shi shouted at the boy, being fed up with his younger brother's antics. "Do not sob in the presence of your queen!"

The woman on the throne chuckled softly, the small noise once again silencing her children. "I'm a mother first and then a queen, Shi. Don't forget that."

"Yes, mother," he responded as calmly as he could, though he glared at his brother. If there was one thing Shi couldn't put up with it was Zesha crying.

"Mother, if I may," Balum asked. His cold, midnight blue eye seemed lifeless, as if he couldn't care less about the conversation and his bickering siblings. "How do you know this to be true? How do we know this isn't another bit of false intelligence from our spies within Spirit World? How can we trust them? Send one of us to Spirit World to confirm this."

"No, Balum. I have been tracking this lead for a long time to make sure this isn't another trick by King Enma. It seems he does not want to uphold his side of our deal." Mui and Balum exchanged glances. A silent understanding passing between them at hearing King Enma was not keeping his bargain.

"Of course he doesn't, that coward," Shi said with the most powerful venom in her voice.

"Shi," the woman spoke as she looked directly at her oldest son. "No more outbursts, understand?"

Shi cast his eyes to the floor. "Yes, mother."

The woman smiled at him before returning her gaze back to her fourth child. "Mui, you must leave us tonight. Hide in the shadows of the Human World until we become a distant memory in his mind. Wait until we come bedtime stories for all apparitions and then you may strike."

"What would you have me do?"

"Use your talents and raise an army. Once your militia is ready you need to create a to distract the King. While he is looking towards you, we will make our move."

"But if he's making a barrier, how is she going to ever see us again," Zesha ask as he tried to hold back his tears.

"You will see your sister again, my little one. You will just have to wait. Once she distracts the King in Human World, we will make our move on the Spirit World. That barrier only blocks passage between Demon World and the Human World, not from Demon World to the Spirit World."

It took Zesha a few moments to understand his mother's plan, but he didn't like it. He loved his big sister more than anything and he didn't want to let her go. The wind in the room started to pick up as a singer tear fell from his eyes.

"None of that now," Mui said as she smiled back down at her brother and smoothed his hair. "You know I'll be back. Nothing could keep me from you."

"But...but..."

"No buts, Zesha. I have to do this. I have to go." She kissed the small boy on the forehead and gave him one final smile. "Be a good boy for me."

Zesha couldn't hold back his tears anymore and began to cry. Seeing her little brother weeping for her broke Mui's heart. Silently, Balum walked over to her siblings and gently pulled the boy from her sister. Zesha started thrashing about and calling for his sister, but Balum held him close.

Without a goodbye or a backwards glance Mui headed through the doors her brother had entered through earlier and briskly walked the halls of her home. A single cold tear fell from her silver eyes.

This was the first time she would be leaving her family for a mission she knew would take longer than a few hundred years and it was all because if King Enma.

"How dare you, you foolish king," Mui growled into the darkness, her domineer changing from calm and smiling to vengeful. She wished she could have had a proper goodbye, but when her mother gave an order, the wisest thing to do was to carry it out as soon as possible. Lingering was not the wisest option.

Mui is the fourth of the Five Lords of the Queen Mother. The oldest demons in existence, next to her mother, the self proclaimed queen of all demons. A title that was rightly earned.

The Queen was the first of all demons. She has given birth to millions upon millions of demons, but her first five are her true accomplishments in life. For their births she made sure to gift her children with abilities that could not be equaled to any other.

Shi, her first born, was the reason she is able to know what love is. His rose red eyes and beautiful silver hair captivated her from the moment she saw him. He never cried as a child, he just had a short temper that she found adorable. His brutality towards others made her love him more and more with every passing century.

Then came Alunk, her second son. She knew from the beginning that he would be stronger than Shi in physical strength, which would cause fights between the two young boys. Nonetheless, he was beautiful to her. He rarely spoke, unless he was upset. She could look into his crystal blue eyes forever. They were mesmerizing orbs that would work in his favor later on in life.

Balum was her first daughter and by far the calmest of the five. From the moment Balum drew her first breath her mother knew that the baby would a fearsome creatures. Her face was soft and gentle like a flower, something that all would cherish. Her thick blood red hair and midnight blue were a perfect contrast to her ghostly white skin. As she aged her looks became more striking and she used her vanity to her advantage. Many wouldn't not believe someone so frail could be so strong.

Mui, her only child that understood the meaning of balance, was fourth and most powerful child. The silver eyed child had a joyous way about her. There was an aura around her. A feeling that would make all bow to her. She wasn't as cruel or vengeful as her older siblings, but when she was filled with rage she became a true force to be reckoned with. Typically she tried to see the good in everything and to find a peaceful outcome, but she wasn't above standing up for what she believed in. She was an obedient daughter and did exactly as she was told without question.

Then finally came Zesha. He was her playful child. He found amusement in torture and murder more than her other children and she loved it. Watching her baby boy play with the corpses of his enemies was one of the Queen's greatest pleasures. His bright gold eye were a gateway to his emotions. He couldn't hide anything from anyone, especially his love for Mui. She was the only one of his siblings to take the time to play with him on a regular basis, so he depended on her for almost everything.

Next to her first five children, the Queen gave birth to millions of other demons, as did her children. All of demon kind came from her and her Five Lords. She was able to give her Lords specific power, but didn't care what she gave to the others. Over time, it was clear that some were more powerful than others. Spirit World grouped them in classes from E to S. The lower classes demons disgusted her and she felt ashamed that something so weak could come from her, but then there were the A and S class demons. They were closer to her power level, but still were not any sort of a threat. However, she did use them to her advantage when needed.

The Queen Mother and her Five Lords were the nightmares of all Demon World. She had raised her chilren to not talk back and to listen to her every word. Most revered them as gods while other were so arrogant to believe that original family was a myth. Some tried to fight the family for dominance, but none prevailed.

Though they ruled all of Demon World from the shadows, the Queen's sights were set on more. She wanted Human World and Spirit World as well. The Neither World never interested her, but she would take it as well one day.

And so began the war between the Queen of Demons and King of Spirits. For every attack one made, the other would counter. The Five Lords were in charge of the Queen's demon army, but rarely got their hands dirty. They did exactly as their mother instructed, nothing more and nothing less. They often complained that they felt their talents weren't being used to their full potential, but the Queen was no fool. Though she knew her children could hold their own in any fight, she was frightful of the tricks King Enma had up his sleeve. He always had something that could cause her and her children trouble and she was not about to let anything happen to them.

After thousands of years of fighting, the Queen Mother and King Enma came to an agreement to stop the bloodshed. Enma was to marry either Balum or Mui in order for their family to gain more control and in return they would never set foot in the Human World again. With his back to a corner, he agreed.

But then came the rumors of a barrier the Spirit King was creating. The Queen sent spies to Spirit World to find out if they were true and what she found out enraged her more than anything ever had before. She had always been a woman of her word and found it despicable when other did not hold their end of a deal. So she made a plan to make the lying King pay. She would send her most powerful weapon to the Human World before the barrier went up. She would have Mui sleep for as long as it took and use her powers of blood control to raise an arm against Spirit World while she and her children would create a secret army in Demon World. When the time was right a new war would begin.

As Mui exited Hollow Castle she knew exactly what she would do and how to do it. Living in the Human World would be difficult for her, but she would do what was asked of her.

But just as she was about to depart her home world her mind began to catch up with her. If her mother was ordering her to leave immediately, than the barrier must be going up very soon. It also meant that her mother didn't find out about the barrier until it was too late.

Her mind then drifted to her siblings. She would miss them all, especially Zesha. Her sweet little brother would be so much older the next time she saw and she'd miss so much of his life.

Mui felt bad leaving the way she didn't. It wasn't a proper goodbye. She acted more like a soldier than a daughter, but that's what she was. Mother had said that she is a mother first and a queen second, but for her children it was the other way around. They were brought up to list and obey, not to question her at any moment. If she had ordered them to kill each other, they would. So when the very brief and barely detailed conversation among the six of them ended and she was ordered to leave, she left. Her feelings didn't matter, only mother mattered.

AN: Forgive me if you think this is vague. More will be explained later on, but for now you can only have a taste of what is coming next. PLEASE R&R