Disclaimers: I do not own Frozen, and this wallpaper was made by the extremely talented Kokuchuutei.

A/N: This is one of the hardest chapters I've ever wrote so far, but also, I'm sooo excited to have this out! If you want more of it, review! That increases the update rate, just saying. Many thanks to 3 for the support with this story, check his profile out! Oh! And this story is based on a certain video-game, but the focus in it is the good and ol' Elsanna. Don't like it, don't read it. Consider yourself warned.

If you spot any sort of incoherence or writing errors in this chapter, feel free to review about it or PM me, I'll make my best to fix it.

You are Enough

One over Billions

Chapter One

She was blinded, the dim light of the nuclear blast could have easily destroyed her cornea, jeopardizing the rest of her dubious military career as an officer of the UNSC. What would become of her without her career? For sure, being in the military was one of the things that she most cared about, one of the few, to be honest. However, her mind was elsewhere, as a matter of fact, her entire life worth nothing compared to this someone, that wasn't there with her.

"Anna".

She was kneeling over a solid light bridge, she could see the Earth from down below, the damage made by the composer - the didact's 'destroyer of planets ship' - was beyond all her expectations. The remaining parts of the planet that weren't glassed - the process of destruction of a planet - were just 'safe', of course that eventually the damage on the other parts of the world would get to there within time, even if it is in other ways, such as socioeconomic collapse. Like some people use to say: Globalization, my ass. The plethora of the marine ocean blue managed to go through all the destruction in no hazard at all; she had completed her mission.

She checked her bio suit. Although it suffered a significant beating during the nearly endless combats inside the enemy ship, it was holding everything together, only exceptions being some few scratches scattered in the artichoke green paint of her suit and her compromised helmet, followed by her malfunctioning shield. Apart from that, her suit was still active, but for now it was just dead weight, a half dead-weight ton, to be exact.

She did it. Even with half Navy to help, this was about a hopeless battle, but for a woman that such word has no way of importance or significance, all that came to fulfill her work, she did it, the inconceivable odds turned out to be - once again - wide enough for positive results of what Frost would call as an 'ordinary' mission. She isn't a very thinking person, according to her logic, thinking about what to do is just waste of time, if she wanted something done, she just does it, however...tonight, she was afraid. For the first time, her mind was clouded with concerns about hers and Anna's safety, she didn't wanted to die - no one does, not even Spartans - but all she cared about was her companion of all time, who was in a state of worrying decay, it was extremely painful to watch, even to Elsa. But yet... she had saved mankind, she was safe, and she had saved Anna, it was then just a matter of time to fix everything, and hopefully, she could enjoy Anna's companion for more eight years.

She focused again on the present, it sometimes annoyed her when her train of thought was interrupted by concerns of the past or predictions of the future clouded her mind into something that she considered herself as utterly useless. Her screen was slightly cracked, that had never happened before with her, that only meant that the combat was more intense than she had initially predicted. It was difficult to see with the large crack splitting the screen in half on the vertical, limiting her vision, completely disabling her heads-up display.

She looked around her. She was just above the planet, still in space, trapped in a violet and blue shaded cube, the surfaces were covered with binary codes everywhere. She ran a routine diagnostic about the place with what remained of her operational systems, looking for clues if the place supported any sort of life, her operational on-board headset answered with an electronic voice, the word 'Sustainable' was enough to satisfy her. She reached out for the release button on the back of her helmet; the hissing noise of the decompression became the only sound on the entire place.

She took some bit more of time to scan the entire place, she looked at the infinite space above her and the wrecks of the UNSC Forward Unto Dawn stood out in the myriad of stars and planets around. Seeing the destroyed ship was a bit nostalgic, she had worked in there during the entire Halo campaign, to then be transferred to an even larger ship, the UNSC Arendelle, a Paris-class heavy frigate from the Navy. The Dawn helped her to destroy the composer's fuselage, and even after receiving a hard punishment in its structure while fighting against some of the Covenant Frigates, it resisted the missiles and torpedoes until it was completely evacuated, before it split in half.

The helmet finally decompressed, releasing its locks around Elsa's neck and loosening itself from her head, finally allowing Elsa to remove the destroyed obstacle.

She reached out for the communication device inside her helmet and detached it, placing the device by hear ear. She looked at the back of her damaged helmet and removed the chip of her AI. Usually, a blue circular light that filled a hole on the chip represented the presence of Elsa's AI, who wasn't there anymore; the light was off, the transparent circle sometimes hunted her in her dreams, whenever that little and bright blue sphere gave space to a dusty and lonely void, she could see herself in a crossfire between aliens and marines with bloodshot eyes. Her eyes were glazed on the ship, she rummaged through her memories to find any explanation; she could swear that before the nuclear blast she was still with her, quite literally by her side, helping her to defeat the Dictat.

"Anna, do you read?" She called through the detachable headset.

No response.

"Anna, come in".

Nothing. She clenched her hands into a tight fist. Anna had never took more than one call to answer, maybe she had lost her ability of communication, or…

The surfaces around her became clear, slowly turning into a gradient which began on the walls ahead of her, getting lighter as they passed her, glowing in a more violent blue shade, it yet wasn't. She stood up, abandoning her helmet on the floor, turning back as she did so. What had been waiting for her was beyond all her definitions of possible, and if she had any faith in some greater being whatsoever, she could even describe it as a miracle.

Anna was there, standing still, her hands entwined in each other over her stomach, purposely covering her revealing bust, a shy smile curved her lips, and as soon as she began walking towards her, Elsa stepped back twice, forcing Anna to stop dead in her tracks.

She was the Anna she knew, of course. But something was... different

She wasn't the same small, tiny, little - any adjective that is synonymous to small could be used - hologram as before - like she was an unphysical animated toy - she had possessed a higher form now, about the same size as a normal human being, she was the most real thing she has ever seen. Her presence was unbelievable and although Elsa wanted to avoid admitting it at all costs, it was a bit frightening, and she was about to rub her eyes like a little child to make sure if she was actually... well, real.

"H-How?" That was the first time that her voice failed her, she gained in result a sad, yet warming smile from her AI.

"Oh… I'm the strangest thing you've seen all day?" There was a hint of irony in that as she smiled faintly, just for a split second, before it gave the room for her disconcerting face, yet it was enough for Elsa to catch it, her eyes were shining like a distant star. It was being Elsa's disgrace, but she couldn't point it out how, she just felt it. Anna's eyes were different than anything she had ever seen before, they were by far much more powerful than anything that she had the chance to lay her eyes onto, and also, by the way that her clear violet eyes stared at her owns, she could tell that Anna was afraid, an equivalent mirror of herself.

"But if you're here…" She trailed off, Anna got in closer and closer, the gravity pulled her down with such a strength that it felt like it was determined to dismantle her.

"It worked. You did it-" Her voice cracked, she couldn't recall the last time that such malfunction occurred. "Just like you always do". Elsa had a great effort to divert her gaze from her partner, she was trying to worthlessly ignore her, even though she was well aware that she was just mere inches apart from her. She looked around at the box they were trapped into, never meeting Anna's eyes, the transparent, physic space wasn't being supported by anything properly physic, it was being supernatural even for a person like Elsa that had seen nearly everything that could be considered 'abnormal' in the galaxy, at least. Like the cube was merely levitating over the planet, that was it, or believe that the cube without natural properties could stay in the planet's orbit.

"So how do we get out of here?"

Anna faced the floor, but quickly looked up when Elsa slowly turned around. "I'm not coming with you this time".

What?

"What?" Elsa's head snapped to her direction, she looked at her incredulously, like she had said the most insane thing that has ever been said, that in fact it would not be an exaggeration. It was yet beyond her beliefs, from everything that Elsa had expected, after everything she had to undergo during her training as an UNSC officer and even as Spartan, all the punishments she received to prepare the base of an unique monument to prevent it from falling apart even in the strongest of the earthquakes, nothing…nothing prepared her for something she never thought she'd eventually face.

The unfathomable grief of a loss.

"Most of me is down there… I held only enough back to get you off the ship". In exception for Anna, no AI in service for the UNSC is able to duplicate itself, let alone in a phase of rampancy, - when an AI reaches to its lifespan – in this act of martyrdom, she had used all the energy that was left of her systems, and

"No… That's not-" Elsa didn't even knew if there was anything to say. For the first time, she felt powerless, she had a great effort to remain her indifferent demeanor. In her entire life, she never felt so close to cry, it was a milestone that she couldn't be proud of. "We go together".

"It's already done…"

Elsa shook her head; the salty taste of the seriousness from the words of her partner wasn't enough to make her believe in them. No… She couldn't believe in none of it, she just couldn't lose her, not again, she had left her to die once, and she couldn't forgive herself until she finally found her again, promising her that she was never going to let her go and make things right.

"I'm not leaving you here".

"Elsa…"

Anna took a bold step forward, her delicate fingers making contact with Elsa's soft and tender face, she wanted to savor it all, easily relishing the surreal feeling, the feeling of Anna's physically touching her face was indescribable, as well as her presence.

"I've waited so long to do that". Her defeated, yet calm voice had a strong effect on Elsa's already messed up mind, all of it came with a miserable sigh, her sigh was like a violent cursed tide that bombarded her with feelings that she had no experience whatsoever.

Damn her… why did she had to sigh? A recurrent thought with unclear intentions suddenly emerged. Elsa had to take some time to understand what that meant. Was she going insane? Finally losing her mind?

She had fought on a nearly endless war through her entire life, and she had no regrets on anything that she had done, but there was things that she should've done better, or fixed things that she had caused damaged. Like her AI. The look in Anna's eyes was nothing short of miserable, there was so much pain and sorrow in them that she thought that if her AI was a proper human in the verge of such emotions, she'd be on her knees, crying her guts out – something that A.I's never have the luck, or misfortune to be able to.

Anna's entire hand entered in contact with Elsa's cheek. She shut her eyes tightly and took a deep breath, her beautiful smile begged for her attention, as it threatened to destroy herself, it was the best thing she had ever felt in a long time, but the sorrow was a the most terrifying feeling that she had ever felt.

"It was my job to take care of you". Anna reluctantly gave Elsa her space, she kept her gaze fixed on the floor, determined to keep her eyes there, avoiding to look at Anna as much as possible, as it would shatter her completely.

"We were supposed to take care of each other…" Her head snapped to Anna's direction, meeting eyes filled with grieve. "and we did!"

"Anna, please…" She couldn't recall any other moment in her life that her heart was so fluttered. After so many years in combat, there wasn't a single moment that she ever felt so afraid, what was all that for? After eight years, they had been into many life-threatening situations, standing always for each other. Frost had took an oath to care and protect Anna, no matter the situations or consequences were… but now, after hers and Anna's mission is done, in protecting their planet and saving the human race… Elsa couldn't point out if protecting her AI was a mission that was given to her, or a personal objective, everything that she does, are based in objectives, as it was naturally more organized, with less chances of error, but she considered it as an infinite goal, where the only way that it could reach an end is by defeat. And she had never lost anything before. She never had felt anything as strong as she did for her own AI… an AI, a computer, a machine that was more precious than the entire human kind for all that she cared.

"Before this is all over… promise me that you'll figure out which one of us is the machine". She once said… It was a stupid question with an obvious answer, right? Elsa wasn't sure. Anna was the closest thing that she knew of being the perfect living being in the universe, she not only protected Elsa during their campaign on the halo installations, but she took care of her, there's a slight difference in both of them that Elsa understood. Elsa was Anna's drug – an addiction that she couldn't to get over with - she owed everything, literally everything to her. Her debts with her would never come to an end, she saw nothing beyond her, she couldn't do a thing without her. She was her everything.

Anna smiled warmly. She gave a step back, and another one... each step compressed Elsa more and more as she walked away.

Elsa's shaky arms tried to uselessly reach out for Anna. "Wait". Was everything she could muster, tears finally accumulating on her eyes, although she couldn't find herself to care, crying was literally the last of her concerns.

"Welcome home, Elsa".

Anna walked backwards, never breaking eye contact. In her last stand, she looked down sorrowfully, regretting - in the same way as Elsa - every choice that she had made that brought them to where they were standing right then. Elsa never felt so attached to someone else in like... forever. Every single person that she met and got close with was killed by the Covenants, she had to figure that out all over again.

Every person that I got close with is dead.

Is that some sort of curse that someone threw at me?

Elsa had failed with everyone she cared about. Miranda - former commander of the Dawn - was dead, Jackson - Frost's squad member - was dead, and now her faithful and inseparable AI was dying right before her eyes, she has had enough of that.

"I said... I'm not leaving you here". Elsa stated, freezing Anna in place, stunned and in awe. She took a step forward, her curious nature kicking in, progressively overcoming her protective instincts. Elsa was relieved for a moment, but it would never last long, she felt it. "You are coming with me, no matter what I have to do". Anna knew what Elsa was talking about, that look in her eyes said that she had made her mind, and she knew all too well that nothing would make her change it, and even if she tried to persuade her, she'd just fail catastrophically.

Anna gave her a wary smile, there was nothing she could do... it was already done, what could she do about that?

"This bubble, what is it?" Elsa asked; her face scrunched in seriousness.

"I created it around you about a hundred milliseconds before you hit the detonator of the nuclear device so it can protect you, you're certainly safe".

Elsa smiled confidently. It never came with good news.

"Undo it". The couple words came as a short and direct command.

"W-Why?" Anna's voice failed again, she wasn't liking the way that Elsa was speaking, much less how she was smiling, she never smiled. Anna was venturing into uncharted territory

"Just undo it". Elsa repeated.

"I-I can't". It was the short answer, but that was Anna, after all. "The nuclear blast will definitely kill you, everything I've worked for would be in vain! I-I can't risk in having you killed, Elsa! This is- this is not right!". The difference between her act of martyrdom and risking Elsa's life was clear to Anna, but still, she couldn't bring herself to care. Anna's 'life' meant nothing compared to Elsa, hell, she had saved the fucking galaxy, what Anna meant compared to that? A decadent AI that was only known for being a Spartan's sidekick

Elsa darted forward and grabbed Anna's wrists forcefully. She didn't meant to be so harsh, but it was the only way of persuasion she knew.

"GET. ME. OUT OF HERE!" She shouted. An spike of electricity went through Anna's systems, she had only experienced that sort of current before once, it was yet the most terrifying experience she had to face so far. She had different levels of electric current going through her form, morbid acknowledge could be an example - when Elsa plugged Anna into a Covenant computer in the Halo installations, the first time when a human-made AI hacks into an alien system - excitement, happiness, sorrow... love. She knew what that was, though... she was afraid.

For what she yet couldn't believe is that she was afraid of Elsa.

"NO!" Anna turned into red for a moment until she finally returned to her original blue shade, her eyes also turned into white. Elsa had seen it before - few weeks earlier, actually. It was a step of her state of rampancy, her systems were deceiving her and Anna's own conscience was changing as well. "I WON'T! I'm not letting you die because of a stupid fantasy that you live! Get your shit together, Frost!" She managed to free herself from Elsa's powerful hands and grab her shoulders.

Elsa stepped backwards, dumbstruck by her AI's sudden burst, an reaction such as this was unpredictable. She immediately regretted her actions. She didn't knew that she could've hurt her AI. She looked at her own hands, she could've blamed them for her act of aggression, but it was just do deceive herself, she only wished that she could save her, make things right. She never would've guessed that a machine would change her in the way she did.

Everything she did was so wrong. Her intentions in her mind, at least were... fair, but something was still wrong, she could feel it whenever she looked at Anna's expressions, it was like she was desperate to be considered, to be properly noticed by her...was she being so selfish, after all? Was she hurting the one that she had promised herself to take care of in one way or another?

She never had faith in a higher, celestial being, but if there was one watching out all her actions, he - with no doubt - was making sure himself that Elsa would be taken directly to the worst, darker corner of hell, a place so gloomy that has been forgotten by the devil himself, for the only sin that she desperately wanted to confess.

"I'm sorry".

If there were any way to get the attention of the AI, surely this would be it.

"For what?" Anna knew Elsa all too well, she wasn't the kind of lying, but still, she wanted to make sure that her systems weren't deceiving her in some sort of state of rampancy, but at the same time, it was a part of her snobbish nature showing up.

"For making you lower than you actually are, by always leaving you at the end of my list of priorities. By never listening your rants about how you were jealous of us, humans, and our ability to feel, by never realizing that you are the greatest thing that has ever happened to me- the greatest person that I had the luck to meet, and live. By never being grateful for choosing me, instead of the others Spartans, and finally... by depriving you of what you deserve, more than anyone in this universe... a life".

Anna was astounded, she had never witnessed Elsa saying something so deep, and the way that she said the words 'person' and 'life' with such conviction - like she believed that Anna actually was a living being - was astonishing, and extremely vibrant, her systems were failing her, not because she was in rampancy anymore, she could at least feel that, she knew that it was something else... something more powerful than anything she had ever experienced before.

A blast of information and a peak of electric current coursed through Anna's systems, her hand flew to her head, as if she was having an intense headache. "Ow... The knowledge- so much, so fast! It's glorious!"

"You... Gosh, how can I say it?" Anna scratched her head, messing with her hair slightly, Elsa always loved whenever Anna did that, even when she was a little hologram hovering over her chip, always unfocused her during her missions, it was always a craze that she was never tired of seeing. In the last few days, it for some reason was everything she could think about, although she never displayed this for the others, it was all a failure, something that should be abolished from her own conscience forever.

"You... love me?" A phantom smile surged and disappeared on Anna's lips, she hoped that Elsa wouldn't see it. Even while she always wanted to make her that question.

Elsa didn't dared to utter a word, she didn't even dared to breathe! She wasn't sure if she was embarrassed or mad at herself, how could she ever think that she had a slight chance with her? She was an AI! Not some sort of physical form that could express and understand her thoughts, personality, not even her charisma... or desires. She couldn't feel the heat of the sun, the ocean wind gently swinging her hair, how could she think that she could feel her slender arms, her pale face covered with clear freckles, her thick, long, inviting thighs, her lips...

AIs weren't made to feel, they weren't designed to have emotions or ordinary feelings, simple things that binary codes can't create. Even though Anna was the only of its kind, created from a human living brain tissue, she wasn't made for any of that, they could have their own charisma, but not be as complicated as Anna became.

"Yes". She finally said, she knew that she was going to regret that later, it was her first thought after the lonely word went past her lips, however she couldn't bring herself to care. "You are, undoubtedly, the only one that I could bring myself to love".

Anna smiled warmly at that, there was nothing left to say. It was all her wishes coming true, the words that she always wanted to listen, finally reaching her anxious ears; she had never felt so human, so alive before. Elsa's words fluttered the heart that she never had, and she could only pretend that her hypothetical heart never beat that fast in a long time.

"But please, don't let this end here". Elsa sniffed, in verge of tears. "Don't let me lose you again, Anna... I- I don't know what I'm going to be without you! Since the beginning you stood by my side, and I never felt something that strong," she placed her hand over her chest, "I'm not good with words, but just give me a chance, I can be whatever you want, I can change. You had done that to me before".

Anna couldn't help but be visually disturbed by Elsa's confession, she was visibly quivering, unsure of what to do, undecided in the most challenging decision of all her short life. She couldn't risk it all... she could bear with the burden of dyeing, but she couldn't even think if it was possible for her to move on without Elsa. She was literally her everything... what was she without the Spartan Frost-049? An decadent and malfunctioning AI in state of rampancy... what would be her utility for the UNSC in the future? Be in a military museum for the rest of her lifespan, receiving maintenance every six years and be shown as an example of bravery and... that's it? She wasn't even brave, she was just...a sidekick, a loyal sidekick of the proper legend.

If there was a chance... that Elsa and Anna could live up together, for the rest of their lives, it was worth the risk.

"I don't want you to change" Anna muttered, the binary cube shattered in a thousand pieces, a dim light took over all of Elsa's senses.

It was a Déjà vu. She was kneeling over the light bridge, with the composer firing against the planet over her, threatening to destroy it all, the only thing that could stop the massive destruction, and possible extermination of the human race was standing mercifully few yards away from her.

Instead of crawling to pick up the nuclear device and blowing it up, she laid down, watching the beautiful planet above her. Memories of her childhood before the Spartan program flashed back, she was looking to the planet just like she used to look to the stars, the certain AI being the only thing in her mind, she didn't cared about anything. She was worthy, of all life on the planet Earth, none could compare to Anna. Elsa's one and only true love.

She was worthy. She was only one, but she was one that worth more than billions.

No one, could ever compare to Anna. Elsa had no regrets.