Disclaimer: I do not own Code Geass or Universal Century Gundam.

Author's Note: Back in July, Zaru pitched me an idea for a Code Geass/Universal Century Gundam crossover story. This story is based primarily in the Geass universe, with several characters imported from various UC series, primarily Zeta. I am going to be the writer for this story, but the story itself is Zaru's idea. And even though this is intended as a crossover fic, I'm putting it into the CG section for the moment, as the various Gundam characters and concepts won't show up until later. It is then I will post it into it's respective crossover section.

Code Geass: Karn of the Oceanic Axis

Prologue

Aries Villa, Pendragon , Holy Britannian Empire, July 2007 A.T.B.

It was a wonderful day…

That was one of the thoughts running through eleven year-old Harmonia's mind as she sat out in one of the Aries Villa's many gardens, enjoying the scenery, fresh air and sunshine with her two sisters.

Her name was Harmonia li Britannia, and she was the middle-born sister of Cornelia and Euphemia li Britannia.

"So, how goes your training at the academy?" she asked Cornelia as she sat behind Euphemia, brushing the younger girl's light pink hair.

"It's going well," her elder sister replied happily, her violet hair blowing slightly in the breeze. "Graduation is coming up."

"That's wonderful!" Euphemia proclaimed, beaming with pride for her eldest sister.

"Yes, it is." She couldn't help but agree with her younger sister. She had always looked up to Cornelia, as she was the image of a strong, supportive big sister. There was only one other woman she admired just as much, if not more.

"Lelouch! Nunnally!" Euphemia exclaimed as she saw their two half-blood siblings approach.

"Euphie!" Nunnally happily said as she rushed over to give her sister a hug.

"Lelouch," Harmonia said, getting up to greet him with a hug. Needless to say, it embarrassed him, his cheeks turning red.

"You can't do that!" Euphie blurted to her, jealousy sprouting within her as she watched Harmonia embrace him. "I'm going to marry Lelouch!"

"No, you're not!" Harmonia shot back. "I'm older, therefore he's going to marry me!"

The argument had started up again. It wasn't the first time this argument came up, nor would it be the last.

"But he likes me more!" Euphie replied, grabbing one of Lelouch's arms. "Don't you, Lelouch?"

"I, um…" he tried to respond, but he had trouble speaking, his cheeks reddening ever more.

"No, tell her you're going to marry me!" Harmonia said forcefully, grabbing Lelouch's other arm.

"But I'ma gonna marry Luluz!" the with the dignity of a four year-old.

It went on like that for several minutes, with a mortified Lelouch caught between three girls fighting over him. Cornelia just sat there, watching the whole scene play out, obviously amused.

"Now isn't this just the cutest thing," another voice spoke, interrupting the argument. Empress Marianne walked up to the group, giggling at the scene she had witnessed. "Seems you're very popular, Lelouch."

"But, Mother…" Lelouch pleaded, his face reddening even more at that fact that his mother had witnessed his sisters' fight over him.

Harmonia too, felt her face get hot with embarrassment over it, unable to continue the argument now that the Empress was present.

Aries Villa, Pendragon, Holy Britannian Empire, May 2009 A.T.B.

It had been going on for the better part of a few hours, with neither of them making any real headway against one another. Both of them were what most considered experts at the particular game they were playing, despite their young age. After all, chess was widely considered an intellectual's game. Patience was key, as was intelligence and strategy.

Harmonia sat there, thinking of several possible ways to counter the move that Lelouch had just made. He was one of the few opponents that she actually enjoyed playing, one who was actually a match for her, she had won roughly half the games she played against the ebon-haired boy. Regardless of whether she won or lost, the games wee always very close, the deciding factor usually one move.

Now, he wasn't the only one who was a match for her. As it stood, the only person to ever defeat her besides Lelouch was their big brother Schneizel. He was one she had always aspired to best at the game, to no avail. He did not matter currently though, as he was not her opponent.

Finally coming to a decision, she finally made her move, moving her queen, taking his bishop and maneuvering her close for the win.

"Check!" she proclaimed as she did so.

"Good move," Lelouch replied sincerely.

She could tell his mind was racing, coming up with every possible way to get out of the predicament he was in, to turn it around and defeat her.

It didn't take him long to get out of check, and the game continued in earnest. At least, it would have.

A series of staccato cracks, along with the sound of shattering glass immediately grabbed their attention. Forgetting about the game, they both rushed to where the sound had originated from.

As they both ran towards where they heard the sounds, which Harmonia distinctly recognized as gunfire. Once they arrived at the top of the stairs, she noticed the shattered windows.

As her eyes shifted downwards, the blood drained from her face, with a look of horror forming on her face. She noticed the two dead attendants, but that wasn't what had her attention.

Her eyes focused on the broken and bloody body of Lady Marianne. Her orange dress rapidly staining a crimson red. The blood draining from the many ragged holes in her body. In ran in rivulets down the stairs.

The once vibrant eyes of the strong, yet gentle woman now blank, cold and lifeless. It was then that she noticed movement. Clutched in her now lifeless arms was Nunnally, whose eyes were staring blankly at the ceiling in shock, tears streaming down her face as she lie there in her dead mother's arms.

Harmonia froze…

She tried to will herself to do something, anything. She fell to her knees, tears streaking down her face as she continued to stare at the macabre scene that lay before her. She didn't even notice Lelouch, standing beside her, frozen by what he saw before him.

She screamed…

Imperial Palace, Pendragon, Holy Britannian Empire, May 2009 a.t.b.

As she stood amongst the gathered nobility, Harmonia felt uneasy. It was not the fact that it was a large crowd. As a Princess of Britannia, she had attended large gatherings, whether they be dinners, soirees or other royal gatherings. She still felt sick over the events that happened several days prior. The image still fresh on her mind.

Of Empress Marianne's body, broken and bloody where it lay sprawled across the steps like so much refuse. With Nunnally in her arms, eyes filled with tears, blankly staring at the ceiling in a state of shock…

She stifled a gag, forcing herself not to show weakness amongst those gathered. Cornelia stood beside her, laying a comforting hand on her shoulder. It had helped her calm down, and she forced the grotesque image from her mind.

As she was in the presence of the royal court, she had dressed appropriately. She wore an elegant, silk gown that was lilac purple in color. Her pinkish-purple hair was done up in a braided bun, instead of the twin pigtails she usually had it in. Cornelia was dressed differently, as she wore the attire of the Marianne's Royal Guard.

As she awaited Lelouch's arrival, her mind kept drifting back to Nunnally. The doctors said she would never walk again, and that she had also gone blind. They attributed her blindness to the shock and trauma of the incident. Her

"Announcing Prince Lelouch vi Britannia, seventeenth heir to the Royal Britannian Imperial Throne," the herald announced after the massive, ornate doors opened to permit Lelouch entry.

Lelouch's attire was a white silk shirt with a cravat with a white jacket over it with silver inlay, in addition to a pair of white silk trousers. The most striking piece was the high-collared red cape held by a gold braid.

He strode down the red carpet leading to the throne, upon which their father was seated. As he passed, she could hear their various whisperings, mostly about the Empress' assassination, and Nunnally's uselessness as a result of her injuries. The whole sycophantic lot disgusted her with their constant scheming and politicking, hoping to ascend higher in power at the expense of others.

He stopped directly at the bottom of the steps leading to the throne, and Harmonia gazed at the man who sat on the throne of the most powerful empire in the world.

A giant of a man, the Emperor Charles was an imposing figure, his face hard and gaunt from long years of ruling a vast empire. His long white hair was done into magisterial rolls, a popular style among royalty. He was flanked by two royal guard standing at attention. If she hadn't known better, she'd be convinced they were statues. Off to his side was a hooded figure, most likely a royal advisor.

"Hail your Majesty," Lelouch by way of formal greeting. "My mother, the Empress is dead."

"Old news, what of it?" the Emperor replied, his tone showing no hint of emotion.

"What of it?" Lelouch responded incredulously, shocked by his father's apparent lack of concern. Even she was shocked by his callousness.

"You sought an audience with the Emperor of Britannia simply to inform me of that?" The Emperor turned his advisor. "Send the next one in, I have no time for these childish games."

In response, Lelouch approached the throne. Before he could get close, the two guards sprang into action, crossing their lances to block the boy from moving any closer. The Emperor raised his hand in an unspoken signal for them to stand down.

"Yes, Your Majesty!" they responded to the unspoken order in unison, backing off. To their original positions.

"Why didn't you keep Mother out of harm's way?" Lelouch asked, raising his voice.

Harmonia noticed he didn't make any attempt to hide the anger in his voice. In all honesty, she couldn't blame him. For she too wanted to know why he didn't make any attempt to protect the Empress, his wife and the mother of two of his children.

"You're the Emperor, the greatest man in this nation if not the world!" Lelouch continued, sorrow and anger obvious in his voice. "You should have protected her, and now you don't even visit Nunnally!"

"I've no use for that weakling," Charles replied harshly.

"That weakling?" Lelouch faltered, at a loss for words. That comment started to get Harmonia's blood boiling. How dare he consider her worthless?

"That is what it means to be royalty."

A few seconds passed, and she could see her younger half-brother's anger building. What he said next surprised her.

"Then I don't want to be your heir, I give up my claim to the throne!"

There were several gasps of surprise amongst the gathered nobility as the young prince angrily declared his intent. He continued, only focused on their father.

"I'm sick of the fighting and scheming over who will succeed you father, I've had enough!"

"You are dead," Charles replied, obviously tired of Lelouch's insolence. "You have always been dead to me. Dead from the moment you were born. Who gave you the fine clothes you wear, a comfortable home, the food you eat and your very life? All of those, I have given to you. In short, you are nothing to me because you have never existed. Yet you dare to speak such foolishness to me?"

Charles stood up, his imposing figure, even more so when angry frightened Lelouch. She even felt a tinge of fear upon seeing their father angered in such a manner.

With a choked cry, Lelouch lost his footing and fell backward.

"Lelouch… You are dead, therefore you aren't entitled to any rights," their father continued. "I am sending you and Nunnally to Japan. As Prince and Princess, you will serve well as bargaining tools."

With that last comment, Harmonia felt her anger finally boil over. Cornelia seemed to sense her intent and laid a hand on he shoulder. She could see the warring emotions in her sister's eyes. She didn't want that to Lelouch and Nunnally, but she didn't want to lose her as well. Shrugging off her elder sister's hand she moved out of the crowd and over to Lelouch. She had made up her mind…

"Is that all we are to you, father?" she responded angrily, making eye contact with him as she helped her younger half-brother to his feet. "Pawns to be used? You consider your children as nothing more that tools to be used and cast away as you see fit? Their mother was just brutally slaughtered, and you're sending them away so you can bargain for more resources? I find this unacceptable, even coming from you, father!" She placed emphasis on that last word, hoping it would have an effect on him. It didn't.

"Harmonia..." Lelouch said with a whimper, too numbed by his father's declaration and his shock over the fact that she, who wasn't even a full-blood relative of his would risk everything to defend him and Nunnally.

"If you see fit to protect this worthless whelp," Charles replied, his voice exuding anger at the fact another of his offspring would be this insolent.

"Then you can share his fate. I hereby strip you of your right to the throne, and banish you from this land. As of now, you are no longer my daughter. You are no longer of any worth to me, even as a tool to be used."

There you have it, let me know what you think. Up next, Harmonia is banished to Area 10, and is forced to fend for herself in the recently conquered Area. If you have any questions concerning this story, be sure to let Zaru know. Read, review, and enjoy!