[A/N]: This fic was created because my friends and I believed that this ship is worth it. And I wrote this story this way because I wanted to answer questions Frozen wouldn't clarify about certain characters and events. Hence, I weave the stories of Jack, Elsa, and the people that surround them into this. I hope you would enjoy it.

Chapter 1: Reasons We Live

He's always believed in the moon, despite the rising of the sun.

But he didn't always understand a lot of things, and that alone made him doubt the great illuminator of night.

Why people can't see him, why or how it happened, and why did he have to live, like, for so long. He didn't get immortality—it was confusing and scary. Living in isolation was something he never expected when he was still among the living, visible people. He didn't like the sinking feeling of being lonely—you just don't get used to it, honestly. Though he would like to admit that it helped him think and just observe interesting people, being invincible and alone can take its toll on you, and truth be said, he has had enough.

Nope, just nope—Jack Frost had dealt with his age and physique frozen, but he did not like the melancholy that accompanied this so-called immortality.

Jack lived for fun, and if he was 'immortal', it had better be F-U-N.

And sure, the occasional snowball fight with the children even if they didn't really actually see him, blizzards and snow-crafting were nice, there was just something nagging in his chest—and he didn't really understand it—about feeling so… empty.

Maybe that's the problem with being immortal.

He felt time pass as seasons would, but it never really mattered to him—it didn't actually bother him, how he wasted eternity because there was just nothing worth living for, since he didn't know what or who it is and how he could fulfill that.

And he has tried asking the Man on the Moon. A lot, an awful lot.

As usual, though, he didn't get answers.

Staring at the zenith tonight, Jack fought the urge to cry. Sighing, he leaned on his staff as he sat on the roof of a castle. It was a lonely night like all the others, and he didn't expect much. Why he went here, though, he forgot. He was attracted to the vibrant colors and wonderful structure of the palace when he saw it earlier this morning, so he thought about sleuthing around it.

Perhaps, that's what interested him to stay for the night in Arendelle.

Or maybe because, even in winter, the castle looked radiant, like it could emit warmth—warmth he has unfortunately and forlornly missed.

Smiling, Jack Frost decided he loved the place.

But in the silent night, his careful ears heard something sounding like a sob. So he tilted his head a bit toward the direction of that cry and used it as a lead to go and find out why someone was weeping in such a house as theirs.

When he reached the window where the sob came from, he perceived a family—the monarchs, it would seem by the magnificence even of their sleeping robes—natural philosopher, two nurses and five ladies- in- waiting in a burgundy room. They seemed frantic, as the situation would allow, since a woman is giving birth but seeming to have problems with it. Her supposed husband, who must be the King, could only watch in fear and anxiety as his wife cried in pain.

The King turned to the natural philosopher and said something.

Not minding the snowflakes forming on the windowpane, he softly pressed his hand on the glass to hear what they were talking about.

"What seems to be the problem with my wife's labor?" the worried King asked, his knuckles turning white in his agitation.

"Your Majesty, she is having complications. The child's feet presented itself first rather than the head, which is the most convenient! But that does not seem to be the only dilemma, I fear. I have tried my best to get the babe, but there's something around its neck, it would seem. This is most unfortunate, Your Majesty, and if I don't do anything soon, the poor child or the Queen will die!" the natural philosopher answered earnestly, pausing for a while to look at the King, whose face turned as white as the snow.

"Do you think I should call for magical folk?"

"Heavens, Your Majesty! Why call such tomfoolery to the castle? I will endeavor to save both of them, even if my life were to be put at stake. Please say your prayers, instead. And not that I mind their help, but it would be too late if we were to have them here! So, my King, please say your prayers with the women."

Suddenly, the queen cried out in anguish as she tried her best to push the babe, but failed still and was hurt after her endeavor. The natural philosopher gazed desperately to the King, who nodded gravely.

"If you think so, then, but I think the women are having a handful with my wife at present. I will do it here. I'll just find a corner. You pursue helping my wife with her labor, dear philosopher."

"Thank you, Your Majesty. I will do my best."

"Yes, you're welcome. Now, carry on. I've delayed you much already," the King finally said, turning away from the labor and walking towards the windows, where Jack was. As soon as the monarch was near him, Frost flew away a little bit but stayed close, so he could see how the King would pray.

Not that the monarch would see him, but, well, Jack just wanted to respect the King's moment of privacy.

Opening the window, the King looked forlornly at the sky and sighed, closing his eyes. Then he whispered, "Please, dear God, give my wife and child a chance. I offer her to you. Please let them live, and I will do my best to ensconce them and the kingdom with love." He opened his weary eyes and gazed at the great moon, not minding the chill of the air he gradually felt.

Jack Frost sort of understood the pain the King was feeling. Calling out to the Great Unknown was a much familiar occurrence to him, so he knew what the monarch was going through. Unbeknownst to him, though, as he continued listening to the King's prayer, snowflakes coming from his hands swirled out and went into the warmth of the burgundy room.

Jack joined the King in his pleading as someone from the room suddenly shouted, "By Jove! Your Majesty! The Queen lives! The babe lives!"

The King, blinking tears from his eyes, smiled and immediately ran to their side, forgetting to close the window. Jack Frost used this momentary negligence of the monarch to get in and have a look at the delivered baby. It was a rare occurrence for him to perceive, and he was not about to let this chance pass him by.

He flew above them and took in the sight of the new human being of the world. The baby cried loudly, as newborns were wont to do, and Jack observed the child. The babe was a girl, and he heard the King exclaim songs of triumph and joy. He saw the father take and cradle his daughter.

The King smiled at his wife, who was thoroughly worn out but managed to look glowing, and mouthed, "Thank you."

Jack's lips unconsciously curled fondly at the moment.

Then he noticed the natural philosopher, who neared the King and said, "I just observed, Your Majesty, that your daughter seems to have tufts of blond hair. I do not think your wife the Queen deceived you since we were present during the commensuration of your marriage, but I wonder why she the Princess does not bear the same brown locks as yours?"

Jack rolled his eyes at this.

"It does not matter, dear philosopher. It will not bother me and my wife Your Queen. This daughter of ours is a blessing and a miracle. I'd rather you not question the paleness of her hair," the King answered tersely, glaring at the natural philosopher. Calming down a bit, however, he said, "But I thank you, good sir, for delivering our daughter. Our gratitude to you is extreme."

The natural philosopher, humbled, smiled and bowed deeply. "Anything for your family, Your Majesty."

Giving the child to one of the nursemaids who immediately set the baby upon a ready crib, the King then nodded and neared his wife, who watched his little tirade with a small smile. Jack Frost, still floating, hovered above them to go to the crib because he wanted to see the child closely. Ignoring the conversation around him, he peered at the hand of the baby. She opened her small fingers, and he held up a finger—just so he could try and see if babies could perceive him.

Suddenly, he gasped when she curled her tiny fist around his finger. What was more astounding was the chill he felt emanating from the baby. Confused but happy, he smiled instead and whispered, "I hope you have fun, my friend."

Then he released his finger and flew away from the family. But when he reached the window, Jack stopped to gaze at the new family. His lips curled once more, and he then flew out.

He made sure to let some snowflakes fall.

And when he was almost a mile away from the burgundy room, he heard a female voice—the Queen, he thought—exclaiming, "Snow crystals! What a blessing for our daughter!"

Jack smiled widely and thought silently to himself that he may hate this immortality and its loneliness, but having powers that could make people happy was something he would never loathe.

He never should doubt the moon, really.

[A/N]: So what do you think so far? Any least/favorite scene/stuff/etc.? Tell me about it. :)