A/N: Well is another fic that is a collaboration work between Holyknight5 and me, a Code Geass and Sailor Moon crossover that I have been trying to work out a solid story for. Well Holyknight and I have worked out a good story line up for it, but a solid conclusion to it has been a major issue. So I am going to do something a little different and create a short prelude story.

It was based on an idea of during the final days of the Moon Kingdom, what else went on since its mentioned in some materials that visits to Earth were forbidden especially relationships with Earthlings was a major no for people of the Moon Kingdom. Apparently Princess Serenity got away with it and their relationship unknowing provided the spark for a war to break out between the two kingdoms. Expanding on this idea I have made a character to be fulfilled on this idea a little more.

Anyway I won't bore you guys with the details, but there is more at my forum post for this story.

Summary: Before known human history legend spoke of a man from the moon who was the known first possessor of the power of Geass, but while almost everyone has forgotten this being the man still lives to the modern day waiting for something…or someone one rather. Lelouch will soon discover a past life he shared with the first known possessor of Geass who destined is intertwined with that of the Moon Princess and Lelouch would be the one to decide the fate of all.

Reminder: Since this story in certain parts and chapters is taking place in a different life time for the characters here is a list of who is who exactly and I'll post this reminder on each chapter for any new readers and such.

Lelouch Lamperouge = Prince Galm of Mars

Rei = Mara

Ami = Arianne

Minako = Astarte

Makoto = Callisto

Chapter 1

The Beginning

It was a cloudy day on June 20th 2010 A.T.B which was oddly fitting weather as a red minivan was pulling up to the base of a flight of stairs leading up to a Shinto shrine in Azabu Juban, a district within Tokyo. After getting out of the van their driver a man in a black suit with sunglasses and a clean cut shaven head opened up the passenger backdoor where a young ten year old boy wearing a white shirt, red suspenders with gray pants. He also had black hair and amethyst eyes with a fair skin complexion.

After opening the door the driver stood on standby as the young boy was struggling to get a wheel chair out from the back of the vehicle while seated in the back waiting was a young blind seven year old girl with ash-blonde haired tied into a pair of pigtails wearing a pink shirt with white shorts on. Having been crippled almost a year ago when their mother was assassinated as well as rendered blind due to trauma the older brother was determined to take care of her.

Yet as Lelouch vi Britannia the former seventeenth in line for the imperial throne was sitting his younger sister's Nunnally's wheelchair aside he began to remember the arrangements that had been made. It was a few days ago that a representative from the Ashford Family had come. A noble family that had been their mother's allies and supporters before her assassination, but with her death along with the failures of other businesses they had been stripped of their noble title.

Despite losing their statues as Prince and Princess of the Britannian Empire the two siblings still held some value to the Ashford Family, but Lelouch knew they were likely being used as insurance should things not go well for them. It was something he despised, but he knew for the sake of his sister and himself they had little choice.

When the time was right they would be declared legally dead allowing them to go into hiding under new identities, but it was during that meeting Lelouch had found something he didn't expect.

'Wait…why a shrine in the middle of Tokyo?' Lelouch asked the man who was present before them as a representative from the Ashford Family.

'It's not surprising you knew about this, but we have already conducted DNA tests to show you proof of this. You and Princess Nunnally have a sister, but for your highness a twin sister.'

'My mother…made no mention.'

'A very small few knew…the Emperor and the head of the Ashford Family and me if you count me among those few.'

'Why haven't we met her?'

'When your mother was giving birth to you it was discovered you were going to be born with a twin sister, but I am sure you know of the superstition that a twin pair of royals born can be a bad omen. Yet your mother at the time I assume didn't feel comfortable so when you two were born she took you as her child whom Charles named while she sent her daughter to Japan to live with her grandfather. Even through you two are twins you two look rather different aside from some similarities, but your DNA results and hers speaks for themselves.' The man explained as Lelouch was trying to take all of this in.

In the end their mother's grandfather who was the caretaker of the Hikawa Shrine would look after them until it wasn't deemed safe given the deteriorating relations between Japan and Britannia. In exchange if war broke out then his granddaughter's safety would be guaranteed which would help conceal the identity of the royal siblings since it was commonly known that Nunnally and Lelouch were the only children Marianne bore while Charles likely has forgotten about Lelouch's twin, but even if he didn't he wasn't likely to care in any event.

The driver followed behind Lelouch carrying Nunnally's wheelchair as Lelouch struggled to carry his little sister piggy back up the stairs. Thankfully at least the stairs leading up to the shrine weren't as high as the ones at the Kururugi Shrine. Once he was at the top the driver unfolded the wheelchair and sat it down allowing Lelouch to seat Nunnally in it.

"Are you ok brother?" Nunnally asked kindly while Lelouch was breathing hard about ready to collapse. Despite having done it many times for the past year carrying his sister over a long distance like he had done when going up the stairs at the Kururugi Shrine were taxing to say the least. Although the Hikawa Shrine's steps weren't as bad, but still they were taxing to say the least but at the very least Lelouch could stand.

"I am fine Nunnally…" A weak Lelouch replied, but suddenly as Lelouch went to push Nunnally towards the shrine itself a pair of crows began peaking at the poor young man's head. Lelouch began screaming as he waved his around his head like crazy trying to drive the attacking birds away, but then a ten year old girl with long black hair wearing the attire of a miko priestess ran up to Lelouch slapping a ofuda scroll onto his forehead with the two crows retreating to the trees.

"Be gone evil spirit!"

"Huh…brother, are you alright what happened?"

Lelouch was on the ground with a scroll stuck to his head who was dazed before falling unconscious no thanks to twin sister, Rei Hino. Yet unknown to them a man in a building overlooking the shrine was recording what had happened and transmitting the video to a hidden location.

(Elsewhere)

Basking in the warm light of the perpetual twilight world he stood in a young man wearing regal black, white and gold lined robes sat alone on a polished black stone throne seated within a majestic temple floating in the heart of the strange space. Despite its sinister artificial aura the world emulated the young man with short white scholarly hair seemed unaffected.

His robes were primarily white with gold lining while large belt around his waist was black lined with gold as well, but they possessed what seemed like a large red eye in the center. A similar eye could be seen on the center of the chest on its side pointing vertical with black on the collar of the coat the eighteen year old wore. Completing his attire was a white cloak lined with gold and knee-high white boots and a white hat with a red eye on top of it also lined with gold.

In his hand was a small computer which was playing a recording of Rei and Lelouch, twins separated at birth because of a silly royal superstition but now tragedy had reunited them once more. The eighteen year old watched as he smiled at the scene.

"You two have found one another again, but you two have yet to remember your past lives together as brother and sister. The Princess of Mars and her brother reunited again." The white haired young man spoke as he opened his eyes revealing what had been once Majorelle Blue eyes, but each eye held a glowing red, bird-shaped symbol over them.

He pushed the pause button on the computer freezing the video while at that moment a flood of memories came to him all at once as his mind drifted into those memories as he recalled a time when everything just seemed so much brighter and happier. It was long before known human history was written dating back eons into the ancient past where there once existed a kingdom on the moon. There at that time existed a race of immortal protectors who watched over the people of the Earth and guided them as well as protected them.

The young white haired man was one of them, but he was a prince.

He was known as Second Crown Prince Mairon Serenity, younger brother to Crowned Princess and Heir to the throne Princess Serenity and youngest child of Queen Serenity. The memories came and he remembered standing in the royal gardens of the royal palace located on the shores of the Sea of Serenity. Standing in the middle of a grassy field was a young thirteen year old boy with short silvery white hair and a fair skin complexion with blue eyes matching his mother's.

Dressed in white robes with a matching sash wrapped around his waist acting as a belt he was playing a violin with a lovely melody heard through the garden. He played before a group of members of the Moon Kingdom nobility, but among those present for his performance was his best friend and his sister. They appeared almost identical at first glance other than the fact they were fraternal twins, but one of them the female of the siblings had raven black hair that hung down to her hips wearing a flowing red gown with straps while next to her sat her brother who had short black raven hair with amethyst eyes wearing a red uniform with board shoulders and a white cravat and a black sash-like belt around his waist with polished black boots.

His eyes scanned the crowd for someone else he was hoping to be there, but he didn't see them.

After the end of his performance the crowd began clapping in applause as Mairon in response bowed to them respectfully. Once he accepted the usual praise he received the crowd began to disperse until only the black haired siblings remained.

"That was better than your last recital." The young man commented approvingly.

"Well thanks Galm, but…I had hoped." Mairon began, but his smile faded as he allowed his sentence to trail off.

"I am sorry, but your mother the queen wasn't able to come." The black haired girl pointed out regretfully.

"I am not surprised, but what about her favorite child? She at least usually comes?" The white haired prince said with an annoyed look on his face.

"I am afraid your sister the princess is up to her usual again…Venus has gone looking for her." The Princess of Mars answered as Mairon was going from annoyed to outright irritate at his elder sister's actions.

"What on Earth has been she been doing these days?"

"Exactly as you said…she has been going to Earth again a lot more frequently." Galm, the Prince of Mars replied.

"But she should know better…going to Earth is forbidden unless a mission from her majesty requires us to go there." The Princess of Mars pointed out.

"How can she be the next queen of our people if she doesn't follow the laws of our own kingdom and attend the lessons required of her?" Mairon shot as he couldn't comprehend why their mother approved of Princess Serenity's frequent visits to Earth which were known to all to be forbidden unless intervention of their people was needed on the surface. Yet despite being aware of it the princess has broken the law again and again.

Mairon sighed as Galm realized a change in subject was needed.

"Anyway speaking of the Earth how has things been going?"

"According to what I have heard nothing out of the ordinary has been happening which is always good I suppose." Mairon replied with a matter of fact tone. "By the way Mara since we're on the subject and given you and the other princess are close to my troublesome sister what she been doing on Earth?" Mairon inquired to the Princess of Mars and Galm's brother.

"Your guess is as good as mines, but I assumed that it was just to enjoy the environment of Earth…but…" Mara answered, but her words began to trail off.

"You think there is something else?" Galm asked catching what his sister was thinking about.

"I think so since she has been disappearing a little bit more often lately, so…" Mara answered, but she didn't finish that sentence.

"Mairon, you don't suppose your sister found someone on Earth?"

"No way…" The young prince shot back with the upmost disapproval in his voice. "My sister might be sneaking away to Earth to enjoy some trees and grass, but there is no way she would do something so stupid as to fall in love with an Earthling. We all know a relationship with an Earthling is expressively forbidden by the founding laws of the Moon Kingdom."

"Yes, but let's not forget the people of Earth are a bit envious of our long lived seemingly immortal lives." Galm pointed out as to add to it.

"So you two think something could happen between our relations with the Earth if the Princess found to be dating someone from Earth?" Mara inquired.

"Depending on whom the Earthling in question is…then yes." Mara's brother answered hoping it wouldn't be the case.

Yet just as if fate was stepping in another princess and one of Princess Serenity's guardians was rushing towards them hurrying across the green grass of the palace garden to reach them. She was dressed in a blue gown similar to the one the Princess of Mars wore except that she had short blue hair and blue eyes with a fair skin complexion.

"Mara, Galm and your highness I must have a word with you three." The Princess of Mercury asked as she looked clearly worried about something.

"What's wrong?" Mairon inquired with a curious look.

"Astarte found your sister…she was on Earth." Arianne began as Mairon and Galm seemed hardly surprised by this revelation.

"Well that's nothing new." Mairon replied with distaste in his voice, but Galm recognized the look on Arianne's face realizing she had more to say.

"What else?" The Prince of Mars questioned.

Arianne cautiously looked around to make sure no one else was within earshot. "She…she was found with an Earthling."

"WHAT!" Mara, Galm and Mairon exclaimed together in shock, but it was about to get better.

"She wasn't with any Earthling…she was with Prince Endymion!"

"You mean...the crown prince of the Golden Kingdom on Earth?" Galm asked to confirm the identity of the man the Princess of the Moon had been found with as Arianne simply nodded.

"So the vapid airhead of the Younger Serenity just fell for the biggest walking source of STD from Mercury to Charon!" The Princess of Mars said while she was completely shocked while Mairon's expression was one of frozen horror and worry at the potential danger the situation represented.

"Did…anyone else see them together?" Mairon asked calmly yet hesitantly at the same time while trying to control his raging emotions at his sister's foolishness.

"I am afraid they were seen by one of the Prince's advisors I think."

A moment of uneasy silence passed as Arianne prepared herself for the outburst of emotion to likely come from Mairon, but the other two she wasn't sure of. Mara was in a state of shock as she almost didn't want to believe what she had just heard while her brother Galm was equally as shocked, but he was in deep thought over the possible repercussions this incident could cause especially since they were seen by a member of the Prince's court as well.

She knew that Astarte, the Princess of Venus, was especially torn and shocked when she had come across the two and she knew from the way the Princess of the Moon was found laying against his chest as the two sat together below a tree they were already on the verge of becoming lovers. But yet despite Astarte being quiet about her return to the Moon with a very reluctant princess in tow she was worried about what would happen if word did get around.

Especially given a conversation Princess Astarte and Galm shared during a recent ball in regards to Princess Serenity's trips to Earth which was already a source of worry between them.

"Serenity lacks the mind to temper her heart, nor the wisdom to see beyond the surface. If she falls on love with an Earthling, or worse, one of its royals, that will set this Silver Millennium on a path towards war or worse…"

The four guardians were loyal to the Princess yes, but they did worry about her visits to Earth. Now with this news she had found love on Earth in the arms of its crown prince no less she knew it wasn't going to go over well with the people of the Earth regardless of what would be said from the two lovers. Yet there was the concern of what the majority of the royal court would think once they hear of this.

"…That…FOOL!" Mairon shouted as he lost all of his cool in one go at the news of what his sister had been doing on Earth. Usually the more mature of the Serenity siblings and calmest was shocked and outraged at the incident.

Like Galm he knew of the possible dangers their relationship with a prince of Earth carried especially given the already strained relationships between the Earth and Moon. Without another word Mairon hurried off likely in search of his mother Queen Serenity, but the blue haired girl wondered what good that would do.

"This won't go over well if word gets out." Mara commented stating the obvious as her brother was fully aware of this.

"I know, but how will we deal with it is the question we have to ask ourselves now." Galm replied while Arianna remained silent uncertain of what she should say. Despite her high level of intelligence even she had no answer of how the Earth would respond once news of their prince seen with the Moon Princess gets out.

Mairon wasted no time traversing across the Palace Grounds heading straight for the throne room intending to have a word with his mother the queen. Breaking two of the highest laws of the Moon Kingdom could not be overlooked and especially given the dangerous of breaking down relations between the Earth and the Moon completely as the people of the Earth had already despised the Moon for their seemingly immortal lifespan.

The guards standing outside the throne room saw the young prince and allowed him entry as Mairon pushed the doors open and hurried into the throne room where his mother and his older sister were waiting and they were already in a conversation. Mairon guessed that it was likely about where she was found and whose arms she had been in when she was found, but the young man hoped his mother would correct the situation.

Yet in the back of his mind he wondered if Queen Serenity would since for as long as he could remember their mother had favored Princess Serenity over him who had accomplished much more than his elder sister and possessing a level of maturity that was beyond his years. He had the praise of the royal court and many others, but never once had he heard his mother praise him for anything.

So Mairon stood quietly while he listened in on the conversation between mother and daughter as the two haven't even noticed the young prince's presence.

"My dear you know it was forbidden alone for you to go down to Earth, but now…in the arms of its crown prince. My darling I do fear for the repercussions, however I do wish to hear your explanation of why."

"Mother…Prince Endymion and I have been seeing each other for awhile." Princess Serenity confessed which stunned Mairon.

'Was that really why you were going down to Earth and then your increased visits?'

"I see, but you understand this will not go over well with the people of our kingdoms. As you already know the people of the Earth already greatly envy us."

'Thank you mother for finally speaking sense to her!'

Mairon cheered mentally, but sadly his celebration would be short lived.

"But maybe…a marriage might help relations."

Mairon's mind came to a sudden and almost violent halt as he thought.

'WHAT?'

"Then mother you mean I could marry him?"

"You two are quite close already from what I understand."

Some muttering was heard among some members of the royal court hanging around the walls outlining the throne room of the palace while the nobles and other members of the court weren't pleased as they simply saw it as the Queen spoiling her daughter again and now she was allowing her to get away with breaking two of the kingdom's most serve laws.

"Mother you can't do that!"

Mairon shouted as he couldn't stand by and allow this. Not only was it against the laws of their kingdom, but he felt this supposed marriage of convince would have the opposite effect. All eyes fell on him as Queen Serenity was surprised at her son's outburst.

"Such a wedding will have the opposite effect and it will outrage the people of Earth. There is already an increase in anti-Moon Kingdom rallies on Earth lately, so a wedding between the Prince of Elysion and the Princess of the Moon will make the situation worse and stress tensions between our kingdoms to the breaking point."

A number of nobles and members of the royal court agreed with the young man as they felt he was being the voice of reason in this argument. Queen Serenity quietly took all that was being said into careful consideration while her daughter was worried because she had grown to love Prince Endymion and wasn't sure what would happen if she was denied the chance to have him as her husband.

"I understand your concerns, but while you have a point I cannot deny my daughter happiness. However I will not ignore your concerns and so I'll communicate with the Earth to arrange for a delegation to come from Elysion to discuss the matter further before a final decision. After all the people in Elysion are likely aware of your sister's visits and time spend together with Prince Endymion."

Mairon didn't have a way to counter that, but it was true the people of Earth were likely aware of Princess Serenity's visits with Prince Endymion so attempting to deny it was pointless now. He wouldn't be surprised if the people were in an uproar…if they weren't it was only a matter of time.

"So we have to deal with this political bomb of a situation?"

"Please Mairon calm yourself the situation will not be bad as you believe…everything will be fine."

'Somehow I really doubt that mother.'

Little did anyone realize then that Mairon was right, because a dark force that would come from the sun would use the situation to its advantage to launch a terrible war that would destroy the Moon Kingdom while at the same time it would drastically change things for Mairon in ways no one could have imagined during the final days of the Silver Millennium.

A/N: well that's the chapter and suggestions and ideas for this fic would be greatly welcomed. I intend for this prelude to be short and hopefully by its end I will have figured out a conclusion for the real main story I intend to make. Pairings for the most part has been decided and I am not doing a harem this time, besides it would only hurt my fic story wise for what I have planned.

However for pairings so far it's Mairon and Rei, Lelouch and Ami. Although I will say a Lelouch and Makoto pairing as well as one with Minako are tempting. Anyway next chapter Mairon and Lelouch try to handle the difficult situation the Moon Kingdom is in now as the delegation arrives from Earth, but it is then that Mairon shall become the first to possess the Power of Geass and by its end his experience with it will lay the ground work for the saying.

"The Power of the King will isolate you."

Here is a brief profile on Usagi's brother from her past life, a second child born from a Queen of the Moon which is extremely rare but the sons of a Moon Queen don't typically assume the throne unless there is no heir ahead of him or very extreme circumstances.

Name: Mairon Serenity

Alias: The Original, Shadow King, King of the Moon

Age: 18 (when he gained immortality), 13 (appearance/wise during the Silver Millennium)

Gender: Male

Hair Color: White

Eye Color: Majorelle Blue

Date of Birth: May 29th

Height: 5'11 (180 cm)

Weight: 74 kg (153 lbs)

Affiliation: Himself (currently), Moon Kingdom (previously)

Occupation: Ruler of the Earth/Moon/Shadow Ruler of the Britannian Empire

Alignment: Lawful Evil (current), Lawful Good (originally)

Love Interest: Princess Mars/Rei Hino

Weapon: Swords

Geass: (not yet decided, but trying to make something dangerous yet not overpowering)

Anyway please read and review and by all means leave a suggestion or two on where I should probably take the main story since it won't be a black and white situation for Usagi and the others to deal with once Mairon and Lelouch's story of their lives during the final days of the Moon Kingdom plays out.