His Butler, Act One: Interference

Sesshy's Mistress

Summary: She returned to make things right, but in doing so, she lost a part of herself to the darkness. With a heavy heart and even heavier burden, she reclaims her title as the Keeper of the Balance and returns to earth.

Disclaimer: I do not own the characters from either series, just the idea to merge the two together!

Enjoy!

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Her silver eyes, though cold and distant, were filled with an intense hatred and need for revenge as she took in the silence of death that surrounded her. Darkness thrived here in the deserted and barren land that housed nothing but painful memories for her. What part of her heart that hadn't turned to stone was now aching. Or was that simply the new addition to her being.

Her Senshi uniform was torn and tattered. Rips and tears scattered over various areas, revealing glimpses of the damaged skin beneath. Silver-tinted blood slowly oozed from each open wound, and bruises, both old and new, dotted every expanse of her uncovered skin. The only part of her that had managed to go almost completely undamaged was her face. Not even her counterpart had dared to mar the beauty that rested there.

No. He had been quite satisfied in tearing her down piece by piece. His pleasure only grew as a piece of her shattered with each sneer and snide remark; it only made it worse since all that he said was true.

She was a coward...

She ran from it all...

She had abandoned everything to him…

Only after fleeing to the past, an alternate dimension of it, did she regain the courage to fight. Only after watching her other self survive and preserver did she come back to face him…

"Little Cosmos," His hiss slid through the air, coiling around her rigid form. Her silver eyes narrowed into slits as her grip upon her staff tightened. She twirled it between her slim fingers and slammed the tip into the ground. A strong flocculation of power ran through the ground, crushing the earth and sending it flying into the air.

"Chaos," Her lips pulled back as she spat his name. "Your reign has gone on too long. I have come to end it!"

The fight had lasted for days as the two entities fought for domination. Their only companion was each other and the silence that surrounded them. Chaos had wasted no time in destroying each and every star once Cosmos had fled, and that fact helped fuel her anger and give her strength through the terrible battle. And Chaos was ready with his cold and cruel words of betrayal, reminding her how she had abandoned the lives of her friends and loved ones to him. How she disgraced their purpose and memory.

Each truth tore another piece of her apart, and he glowed in satisfaction, even as she finally gained the upper hand. His laughter echoed through her thoughts even now.

"You may think that you won, Little Cosmos," He spoke through the coughing spells. Blood spilled from between his lips as he sat upon his knees in front of her. His breath was labored and his body was badly beaten. "But even as you cut me down and end my physical existence, I will live on, haunting you for the rest of eternity. Everything I stand for, everything I've done and everything you've failed to do will live and fester inside of you until you can no longer stand to look upon yourself."

She held the Sword of Serenity against his throat, pushing the blade until it bit into the skin of his neck. Blood swelled and ran down the length of the blade, dripping off the tip and falling onto the dry and cracked ground beneath her feet.

"Remember," His grin only widened as Cosmos' grip tightened around the hilt of the sword. Though she showed no physical signs of anger or outrage, it showed in her eyes. An inferno was building beneath the silver surfaces, churning and growing. "Where there is light, there is darkness, even in the purest of hearts. You were no exception then and you're no exception now."

She wasted no more time in slitting his throat, but in her anger and haste, she pressed too firmly upon the blade. It easily sliced through the column of his neck, decapitating him in the process. His body stayed suspended in the air for several seconds, but his head toppled backwards and rolled a good distance away from her. As it slowed in its momentum, the head rested so that his ever grinning face and condemning eyes locked with hers.

That was then and this was now. Chaos had been right. Where there was light there was darkness. Upon his physical destruction, his body began to decay until all that was left was a large mass of shadows. They twisted and churned upon one another, reminding Cosmos of a pit of snakes. Weary of the sight, she took a step back and it was then that the formless mass lunged for her.

She was too tired and weak from fighting to dodge them. They latched onto her body, covering it like a second skin and sliding into her through the small pours of her skin. Pain laced her body, shooting through her veins as the darkness raced towards her heart. Cosmos fell to her knees in pain and her hands clutched tightly at her chest. Her sword fell to the ground with a loud thud before dissolving into silver dust.

The pain had been so intense and the rush of power was too much. Her body could no longer hold it all together, and so, her head was thrown back as an earth shattering scream ripped through her throat. At the same time, both the darkness and the light fighting inside of her burst. Their power exploded and sent a power wave through the entire solar system.

Thump…thump…thump….thump….thump…thump…

With no energy left, she collapsed. When she awoke, she was at a loss for how much time had passed while she slept. She was weak at first. She could not even muster the strength to move her body. So she lay there, waiting for her body to heal, and it took longer than normal; it must have been the influence of Chaos. While she lay there, she closed her eyes and remembered the times before her mistakes. She remembered her friends, family, and loved ones. And she couldn't help but wonder how hurt and rejected they must have felt when she fled.

With those thoughts, it was then that she decided to rectify her mistakes. She would use her power to bring life back to the stars, one by one. Though she could not bring life back to those that had been destroyed, she could give life to new stars.

Once her strength returned, she made her way to the crippled remains of the Cauldron. What had once been filled with many bright and shinning stars was now empty, but that would change. It took all of her strength and will power, but she managed to give energy back to the Cauldron. It slowly filled itself with a bright, golden glow that only grew in strength. Once at full power, Cosmos again collapsed into a deep sleep. And as she slept, she dreamed.

They weren't pleasant dreams. No, she was forced to watch the memories of Chaos as he conquered and destroyed each star, each planet, and each person. No matter how much she screamed or fought within her own mind, she could not stop the sickening play taking place. The amount of energy it took to revive the Cauldron was too much. She couldn't force herself to wake until her energy reserves had returned. All she could do was watch, as it played on her guilt. It thrived as she mourned and grieved each and every thing destroyed at Chaos' hands, and the darkness that had invaded her rejoiced in her pain and suffering. Then, everything stopped, and she felt some of the taint being released from her body, easing her pain every so slightly. From within her own mind, she saw herself sleeping. Her body resembled that of a broken china doll; it was almost unrecognizable from that point of view. But she saw. She watched as what appeared to be shadows exit her body and spread into the Cauldron. Though they were dispersing, a part of it stayed; it latched onto her heart, never releasing its strong hold upon it.

The rest spread into portions, each finding itself a new host.

…

"..Cosmos…" A soft voice whispered into her ear. The sound was muffled, almost as if the person was speaking to her from some enclosed place.

"Cosmos…" The voice sounded clearer this time, closer even, and Cosmos began to rouse. Her conscious was slowly pulling itself back together. As the tendrils of sleep receded from her mind, her body was awoken to the stiffness and lasting ache that resided within her.

"Wake up, Cosmos," The same voice coaxed.

Empty eyes of the darkest silver coating opened wide to the bright light that surrounded her. A moan of pain escaped through her dry and cracked lips as she shut her eyes from the sudden intrusion. She moved her hands to cover her face, but her muscles were stiff and refused to move at first, and everything hurt. Everything.

"Cosmos, are you alright?" The voice was filled with concern, and though it was unfamiliar to her, something about it called to her. Cosmos slowly opened her eyes, allowing them to adjust to the light around her. Once they had time to adjust, she looked around, trying to spot the source of the voice.

Movement from the corner of her eye caught her attention. A very tiny, fairy-like form, flew closer, and at the sight of it, her heart felt torn. "Who are you?" Her voice was bare of any emotion, but her eyes spoke volumes.

"I am the new Guardian of the Cauldron," The small figure spoke with caution. Cosmos' body may still have been weak from such a long slumber, but her powers were stronger than ever. Even now, unknowingly, the powers of Cosmos were radiating off of her body in warning. "When you offered your energy, you gave the Cauldron life again and it's first creations was me."

"Why?"

"I am something familiar to you," Indeed she was; it was such a painful truth. The new Guardian of the Cauldron had taken on the appearance of Usagi Tsukino from the alternate dimension of Cosmos' past. The past where things had turned out differently – better. There was life where there had been desolation and death waiting for Cosmos.

"Even after all this time, it seems that Fate continues to enjoy her cruelty towards me," Cosmos' tone was bittersweet. The small smile that graced her features was self loathing as she turned her head away from the Guardian. "Why is it that you awoke me from my slumber? Have I not suffered enough? Let me sleep so that the monster inside of me never escapes again."

"You were not made to sleep eternally," The Guardian argued as she flew to the other side of Cosmos. When she closed her eyes from the Guardian, the small figure kicked her nose. "You were created to be a beacon of hope for those that have none!"

"The Messiah of Light, the beacon of hope," Cosmos spoke but her tone was mocking of itself. "Yes, that sounds delightful. A beacon of hope that has been tainted by the very being who destroyed everything in the beginning."

"The merging of yourself and Chaos was not foretold nor expected, but it is something that has been done," The Guardian spoke softly. "As Cosmos, you hold the mantel of being the keeper of the balance. Though not entirely pleasant in any form, this merging has made things easier for you. No longer do you have to exist in loneliness, waiting and watching for Chaos to resurface."

"No," Cosmos pushed herself forward, resting in a sitting position. The movement made the muscles of her back ache, but it was a relief to move from that one position. "I now live with the knowledge that the being that killed all that I loved now lives and thrives inside of me."

"That is not entirely true," The Guardian spoke nervously. The translucent wings on her back started to beat faster as she twisted her small hands together. "You only hold the heart of Chaos, not all of him. Though you are powerful in your own right, Light and Darkness were not meant to co-exist together in the same vessel. Had all of Chaos remained inside of you, it would have destroyed you from the inside out."

"What happened to the rest of it?" Cosmos' voice was clipped as she regarded the small being through narrowed eyes. "If I only hold the heart – " Cosmos lifted a hand to place it over her chest. She closed her eyes as she felt the rhythmic beating. "- Where did the rest go?"

"You do not remember?" The Guardian questioned in surprise.

"No," Cosmos shook her head, making her hair fly about softly. When she tried to think of her final moments before her deep sleep, all she drew was a blank. But, somewhere, something in the back of her mind kept nagging at her. Something that demanded her attention.

"Since your body is the vessel of Light and not Darkness, you could not retain it all. The remainder left your body and leaked into the cauldron," The Guardian flew back slightly and waved her hand in a circle. Before her appeared a portal which showed the happenings of that day so long ago. As Cosmos watched this in silence, her latent memories rushed to the front of her mind.

"I remember…"

"A piece of Chaos now exists in each and every star that was born," The Guardian waved her hand and the vision into the past dissipated. "However, unlike before, you now hold the heart of Chaos. The entity itself cannot reproduce into the enemy you once faced."

"However?" Cosmos questioned.

"Each newborn star now has the potential to become of itself something new and, possibly, more dangerous," The Guardian replied without looking at Cosmos. Her tiny eyes were instead focused on the Cauldron. "Do you remember what the Queen once said?"

"The Queen?" Cosmos questioned in confusion.

"Your mother," The Guardian clarified. "Light and Darkness live side by side…"

"Show a little fear or the drop of a tear, and the darkness will start to grow, consuming the light…" Cosmos finished.

"As you slept, I have watched over the happenings from here, by your side. Each star has been granted the opportunity to decide their own fate and destiny. They can choose to live for good, or bask in the life of darkness," The Guardian flew back further as Cosmos finally pushed herself to float upright. At that moment, she was thankful for the limited gravity. Cosmos doubted her ability to stand if there were any at the moment. "So far everything has been quiet, and the only activity I have noticed in the least has come from a place that you are familiar with."

"Earth?" Cosmos questioned even though she knew the answer. Humans have always been known for allowing the darkness in their hearts to take control. Even during the time of the Silver Millennium, a peaceful era in the Universes history, the humans were considered tainted and beyond help or redemption."

"Yes," The Guardian nodded solemnly. "There has been no activity of significance as of yet; however, as you know, humans are quick to create their own demons for the simplest purposes."

"Indeed," Cosmos nodded as thoughts of her past battles flooded her mind. Beryl was the first and one of the few enemies that Cosmos still reflected upon most. Though her story was a sad one, the choices that she made left no room for sympathy. Her jealousy had brought on nothing but hatred and a need for revenge against innocent people. It had led to the destruction of her entire kingdom, and began the war with Chaos and all of his minions.

"What is the status of the other newly reborn stars?" Cosmos questioned in honest curiosity. Though many problems had stemmed from the earth, there were others that had been created outside of Earth's solar system.

"Everything is well," The Guardian spoke as she once again gave Cosmos a visual. "Most planets are just now in the beginnings of life from the simplest forms; however, there are some planets that have developed their civilizations quite efficiently." Indeed, the visuals that the Guardian was showing Cosmos were quite impressive. Things seemed to be falling back into place.

"How has the civilization of earth developed thus far?" Cosmos pondered aloud.

"Not quite as impressive as the others," The Guardian admitted neutrally. She waved her hand and a visual of earth's population appeared. "It is exceedingly different from the last time you were upon it. Things seemed to have begun anew in many senses. Though they have been slow to adapt and progress, some have found other means as to how to achieve their success."

"It looks similar to that of the history in which we learned in school," Cosmos commented idly while her silver eyes absorbed everything that was shown. "There are no cars, computers, weapons are of the most basic, and everything seems rather …archaic compared to the times of which I knew."

"Your assumptions are quite accurate; however, history has not entirely repeated itself," The Guardian admitted reluctantly. "While what I said in regards to suspicious activity is true, there is one anomaly."

"And that is?" Cosmos' intense stare had the Guardian frozen on the spot.

"Without the active influence of either Light or Darkness, the planet of the new earth has created its own hierarchy of power," The Guardian spoke calmly. "There are no protectors to guard against enemies from outside or inside influence. Instead, there are beings that roam freely."

"What are these beings?" Cosmos demanded to know. For some reason, she felt as if this key piece of information was vital somehow.

"There are three separate groups that work separately, but, at the same time, they help keep a sense of balance amongst the humans. You have what the humans refer to as Angels and Demons. The Angels are higher beings which represent the purest sense of existence. Demons are the lowest forms. While Angels do not associate themselves with the lower vessels, the humans, demons have been known to bargain with humans in exchange for their souls of which they feed upon." The Guardian brought up a picture of an Angel and Demon facing one another. One side was lit up with a bright white light while the other was covered in nothing but darkness.

"Angels and demons detest one another and seek to destroy their opposites. Then you have the reapers," The image once again changed to reflect a figure holding a scythe above an unsuspecting human. "They are the middle ground. It is their duty to end the life of a human when the time has come. If there is demon interference, they are given the task to take care of that interference. The same is said for any interference of an Angel though there is no record of an Angel interfering upon the life of a human, yet."

"Are these demons like that of the youma that me and mine faced after the first rebirth of earth," Cosmos questioned.*

"No," The Guardian shook her head. "They do not feed on energy. They absorb the soul to power themselves; however, the soul lives on inside of the demon. It becomes a permanent part of it."

"There is no way to free a soul from the demon?" Cosmos' brows knitted together in thought. How cruel of an existence to live in a being that devoured others for survival.

"Not that I am aware of," The Guardian answered truthfully.

"Have any other stars suffered an affliction such as this?" Cosmos inquired.

"No. It would seem that no matter the time or place, earth will always call forth the darkness that lingers in the hearts of its inhabitants," The Guardian shook her head sadly from side to side. She truly mourned for the souls of that planet. Silence echoed around the Cauldron for several minutes before the Guardian sought to break it.

"With many of the newly born stars still in their beginning phases, it is more than likely that nothing will develop as of yet. It might be wise to observe and mediate the small issues developing on earth so that their influence will not spread. Just to be safe," The Guardian suggested meekly. Her suggestion brought on a flinch from Cosmos.

"The world you knew is gone and this one has been given life anew," The Guardian continued. "Your influence may prove vital for its survival. You can live a new life, make new friends, heal, and move on to new things. You do not have to simply exist in a world that passes you by every day."

Cosmos stood silent and unmoving as she gave some consideration to what the Guardian suggested. Her heart yearned for the familiar planet, the planet she had grown to love since her first life. But the memories that it brought with it were so painful. Could she live a life without her special people?

"Remember the promise you made to your other self," The Guardian reminded Cosmos, and even though it hurt, Cosmos made her decision. Upon leaving the alternate past, she promised the Usagi of that time to return to her home dimension and redeem herself. She promised to defeat Chaos and make everything right. If she fled again, it would be disgracing the person she looked up to the most.

"I will return and monitor the situation. Should it escalate, I will take care of it with a minimum amount of interference. It would not bode well with this earth if the scales were tipped and a ripple effect was to trigger much larger issues." Cosmos sighed as the weight of her decision settled heavily upon her shoulders and chest. Her heart beat painfully inside of her ribcage, reminding her of what lay inside of her.

"While the current earth's system of dealing with anything unnatural is working well, I believe it to be flawed," The Guardian admitted. "With your presence, I believe that it will give the planet a new chance to thrive properly, much like its other newly born siblings from other systems." The Guardian turned towards Cosmos and flew to become eye level with her.

"May I make a suggestion?" The small figure requested. Though unsure, Cosmos gave her permission. "You are still weak. Your body has not had sufficient time to heal and grow accustomed to it's new…addition. If you wish to truly see this mission through, I suggest that you allow you body to be reborn. Start new and fresh on the planet. Allow yourself to live while you can."

The idea startled Cosmos, but the more she thought about it, the wiser it seemed. Her body was weak and stiff. Making the trip to earth's solar system would be tiring of and in itself. Cosmos turned and gazed down into the Cauldron. She could give herself over to it and be reborn. The thought was tempting.

"Would I forget it all?" She questioned the Guardian.

"Would you want to?" The Guardian answered Cosmos' question with a question of her own. Though that irritated her, it also made Cosmos think in earnest about her choices.

"No," With that, Cosmos closed her eyes and let her body fall back and into the Cauldron. The light swallowed her whole and the warmth from the light seeped through her skin and touched her through and through. Only when the light had fully consumed her body did she open her eyes. She brought her hands to her face and watched as they became translucent. Her body was fading, leaving only her star seed to continue its fall to the heart of the Cauldron.

The gentle hum of the Cauldron lulled her to unconsciousness, but before she fully succumbed to it, she allowed a peaceful smile to grace her lips; it was the last thing the Guardian saw before Cosmos' body entirely disappeared.

"Go forth and find peace," The Guardian spoke as she held up her tiny staff. A bright glow emitted from the tip as she poured her energy into the Cauldron, aiming for Cosmos' star seed. "So that you may finally live at last."

The energy within the Cauldron began to grow brighter and brighter until the light and energy bubbling within it exploded into a multitude of colors. From the center of the explosion, a single star shot free and zoomed towards earth.

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Okay, so this is my Black Butler/Sailor Moon Crossover prologue. You may be confused, but do not worry, so am I. Yeah, I know, that is pretty bad and kind of sad at the same time. Oh well, that is life. I will try to clear some things up for you, though:

This story takes place after the last episode of Sailor Moon (Manga). Sailor Cosmos has left to return to her world. She kept her promise of defeating Chaos and making everything right. In defeating him permanently, she had to sacrifice a part of herself by taking on a part of Chaos – his heart. Her vessel (her body) was not made to contain both the ultimate power of Light and Darkness. So while she harbors the heart of Chaos (keeping it from finding a new host to devour), his essence and portions of his 'body' (so to say) has been divided equally into the hearts of all newly reborn stars (those on earth and other planets).

Without the heart of Chaos, his essence cannot take form and reshape itself; however, the influence (though not as powerful as it would be with the heart) can create other problems for those that allow themselves to fall to the darkness. Earth being Earth has always had problems with this, and so, as a precaution, Cosmos will be reborn with her memories to return to the mantel as the keeper of the Balance, should the fragile system that the earth currently runs on should go awry.

I hope that you have enjoyed this Prologue, and I would greatly enjoy to hear some feedback. I enjoy reading my reviews and any advice that they have to give (even constructive criticism). Though, I will warn you. I have been blackmailed by YamiNocturna. If I want her to update her Black Butler story, I have to work on my Hellsing Crossover. So, I might not have as much time for this story as I like; it all depends on how good her updates are…

I hate being blackmailed! GRRR! So, yeah. I also have to finish A New Dawning and My Promise. I also have been asked to work more on Standing Out and Cruel Ends. My main concerns will be A New Dawning, Standing Out, My Fairytale (I have no choice in this matter!), and this story. But, don't be surprised if you see an occasional update of another story. It depends upon my mood.

*First Rebirth of Earth* - After the Silver Millennium fell, the Queen sent everyone to be reborn. So, all evidence of the time of the Silver Millennium and its alliances vanished. I considered that to be the first rebirth of earth! Earth is now in its second rebirth! The first at the hands of Queen Serenity and the newest at the hands of Cosmos.

So, I'll shut up now.

Sesshy's Mistress

PS: If you are confused, just let me know in a review and I'll try to clear things up for you!

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