Note to readers: This is a fanfic, I own neither Frozen nor Rise of the Guardians. I used those stories to make this work, so there may be differences from the actual movies. Hope you like it!

~X~

"Hey mister how did you get up there?" A small girl asked to the teenager perched on the top of her parent's castle.

The teen's eyes widened before he grinned and jumped down the roof. The girl squeaked and covered her eyes with her hands. After a few seconds passed she opened her fingers and peaked through.

She jumped back in fright when she saw a pale face with icy blue eyes staring into her own. She almost tripped, but two lean arms caught her. She saw the teen's face split into a grin as he fixed her upright.

"How did you do that, who are you?" she asked again, but the teen didn't answer. He just kept grinning. He was shaking in excitement, jumping up and down holding a shepherd's crook in his hand.

She opened her mouth to ask again when he tackled her with a hug. She quickly tried to wriggle her way out of the teen's grasp. Not because she didn't like getting hugs from strangers (although she felt very uncomfortable), but because she might accidentally freeze him.

No one deserves that.

She closed her eyes and waited for her powers to kick in. . . But it didn't. She looked up and saw the teen's smile grow even wider. She tried one more time.

"How-"

"You can see me!" the teen blurted out (once again not answering her question).

"Yes, I can. How can I not."

His smiled dimmed a bit "Most people can't"

"Well that's too bad. You seem nice, but please answer my questions"

"What questions?" he asked

She sighed, it's going to be a long day. "Let's sit down and I'll ask them again." She motioned for him to follow her as she walked towards one of the fountains they had on the grounds.

Then she thought of something and stopped to turn around. Although she acted like someone older, she was still 6 years old so she stuck out her pinky towards the teen.

"Promise you won't make things up; that you'll answer all my questions."

He looked thoughtful and replied "Promise you'll believe me even if it doesn't seem real?"

"I promise!"

He reached out and grabbed her pinky with his own. "It's a deal"

~X~

She lied down on her bed after a hectic afternoon with the teenager she saw on top of her home.

The teen -Jack, he said- was definitely not human, or at least not fully. She was skeptic in the start but everything was connected and he never slipped up when she asked him questions.

So he must have been telling the truth.

There's something about him that makes you believe whatever he said.

But he never became serious the whole time they were together. "Where's the fun in that?" he said.

But one thought keeps biting the back of her mind. My powers didn't act up when he was here. That was what really made her believe him.

It made her believe in Jack Frost.

She thought about what happened earlier that day.

. . .

"Hey Elsa, let's go play" The teen said when he floated to the top of the fountain. "It's too quiet here"

"Get down from there before you fall, you promised to answer all of my questions" Elsa scolded.

"Don't worry, the Wind won't let me fall. Trust me!" he exclaimed, ignoring her last statement, as he straightened. With his arms stretched to the side he closed his eyes and she saw him fall back.

Her powers exploded causing everything in the courtyard to be encased in a thin layer of frost.

Her lips trembled and her legs gave away. She kneeled and put her hands to her face mumbling 'I did it again' over and over until she felt a hand on her shoulder.

She was pulled into a warm hug, Elsa just stood there in shock after what happened. The teen rubbed her back and helped her calm down. After a few minutes he pulled back and asked if she was alright.

She looked at the teen, confused as to why he wasn't glaring at her or looking at her in fear. He saw the questioning look on her face and replied "I'm Jack Frost"

The questioning look turned into disbelief and his face darkened. "You promise to believe me."

"But-"

"Even if it's too unbelievable"

"Yes I di-"

"So why don't you trust me?"

"Because my parents told me that he's just a mean spirit who nips people's noses during winter and gives people frostbite. So I ended up believing that he's the one making my powers worse. I don't want to think that's you!" she explained.

His eyes widened and mumbled, mostly to himself "So that's why you can see me."

"You keep mentioning that. Other people can't see you?"

"You have to believe in me to see. That's the rule all spirits have to follow"

"How many can see you now?"

"Besides you?" she nods

He smiled and looked down. "Zero"

Silence.

She looked at him in shock. If he really is Jack Frost then that means he must be at least a hundred years old. A hundred years without someone to talk to. "That must've been hard"

He looked at her and she saw a small twinkle in his eyes. "At lease I know that someone believes in me now. . ."

He looked thoughtful.

"Let's make a new promise." He stuck out his pinky again. "Promise you'll always believe in me. Even when you grow up and your parents tell you to forget."

She smiled and wrapped her pinky around his "It's a promise"

. . .

So the rest of the day Jack told her stories about his life as a winter spirit and they ended up being best friends.

She hasn't told her parents of her friend yet. When she asked him if it was alright he just shrugged and said that they wouldn't believe her anyway.

So she asked if she could tell her younger sister about him; It made him smile, the more the merrier he said. So it'll be their little secret.

Elsa, Anna and Jack.

Friends forever

For the first time in years, her sleep was filled with dreams.

~X~

It's been a year since they've met Jack.

Anna was confused at first when no one was there but when Elsa mentioned his name she quickly saw him asking every question she can think of. It was very fun.

Elsa started to notice her power became easier to control. Her parents kept asking her how but she would just smile and say that Jack Frost helped her. Like he said, they didn't believe her.

But she didn't care. Now she had a friend that isn't freaked out by her powers (Anna doesn't count since she's her sister), Plus he teaches her sometimes how to control her powers better. He mentioned that he had trouble controlling his powers before ("How old we're you then", "Secret") so he tried to teach her what he knew.

"Distract yourself from the fear." he said "Have some fun, you don't need to hide your powers. Soon you'll learn to control them so no one will need to be scared of you"

"I'll try" she replied her hands shaking as she tried to make some snow. Every time she almost did it, her powers made it too big and she would cut it off.

When it happened for the fourth time she felt the wind gather up and pulled her closer to Jack. She wouldn't look him in the eye because she thought he would be disappointed. But instead of anger she heard amusement in his voice when he suddenly asked "Do you want to build a snowman?"

In her confusion she forgot all about her fear.

So that quickly became their code. If one of them would want to play in the snow they only need to ask "Do you want to build a snowman."

She hasn't had an accident since then. She enjoyed her time playing with Jack and Anna in the snow (Mostly made by Jack). She forgot the fear of losing control and just lived in the moment.

But all good things must come to an end.

~X~

One night a few years after their first encounter there was an Aurora that was seen across Arendelle.

Elsa was quickly falling asleep on her bed when she felt a small weight in top of her.

"Elsa, let's go play" her sister said trying to wake her up.

"Go play by yourself" she answered tossing the little girl off her bed.

She tried to sleep but she felt her sister on her again and said the magic words "Do you want to build a snowman?"

She looked at her sister with a small smirk and stood up. She allowed herself to get pulled into the empty ballroom by her sister and they proceeded to play with her magic.

Just have fun. She kept telling herself while making all kinds of things for her sister. Everything was going great. At first she was worried that without Jack she would lose control again but after a while she forgot about it and just kept remembering his words.

But then Anna pushed things too far.

It happened so fast, Anna was jumping too quickly and Elsa couldn't keep up. She was so scared that her little sister would fall that a small burst of power escaped her outstretched hand hitting her sister in the head, making her land unconscious on the pile of snow.

She ran over to Anna, trembling with fear as she called out to her parents. "Mama, Papa, help!" she shouted.

In her mind she called for Jack over and over again.

But he never came.

Her parents put her and Anna on the horses and they rode towards the home of the trolls.

She was still in shock, whispering for Jack to help.

The leader of the trolls came and her father told them about her powers. The leader said that he would have to remove all of Anna's memories of magic.

Then a thought occurred,

"Even Jack!?" she exclaimed. She felt her father grip her shoulder. "Jack Frost is not re-"

"Yes" the elder answered "Even him."

The king's grip loosened and Elsa felt tears in her eyes. "Can't you just let her keep them? You can make her forget all about my magic, just let him keep a believer. Please."

The troll looked at her sadly and replied "There is a lot of danger remembering the ice that hurt her."

"It was my ice not Jack's"

The elder smiled and answered "Very well young princess. But remember my warning, she will remember him until the day she dies while you will forget him soon. Your words may hurt her, telling her to forget. But she will not."

"That won't happen. I promised Jack that I will remember him forever."

"I wish you luck. For you may need it in the future" he said and waved his hand over Anna's head.

Elsa saw all of the times she played with her sister using her powers turn into normal scenes in the snow. But true to his words she didn't see a single time they played with Jack be transformed.

They thanked the trolls and rode back to the castle.

~X~

Elsa was transferred into a different room and the castle seemed less lively than before. She locked herself up in her new room so that no one will get hurt with her powers.

Especially Anna.

She tried to have fun like Jack said but it didn't work. She was scared. She kept calling for him but the wind that announces his arrival never came.

So she was all alone for years.

Anna keeps knocking on the door of her room telling her their code. But it doesn't have the same meaning anymore.

"Do you want to build a snowman?" she would ask. But Elsa knew she meant for them to play with Jack and his powers, not hers.

So she would just tell her sister to go away.

Years would pass by and her powers kept getting stronger. And so did her fear. She pushed all her memories of Jack into the farthest corner of her mind because she doesn't believe that it can help her anymore.

It's too strong for anyone to control with just a little fun.

Her fear was steadily growing as the years came and went. But she was still able to control her powers as long as she remained indifferent.

But it reached a breaking point when their parents died.

It exploded all over her room, freezing everything around her. She heard Anna outside her door asking what they should do.

But she just kept silent and tried to sleep on her tear stained bed.

She would still hear Jack's voice at the back of her mind telling her to have fun. But she's finding it hard to believe. It's starting to get harder and harder to remember all the fun times they had.

All that's left in her mind is fear. And the dark laughter hiding in the shadows of her memories.

~X~

13 years have passed since she accidentally hurt Anna. It's finally time to open up the gates that were closed for years.

Elsa's coronation day.

Everyone is coming. People from all over the continent seeking favor from the new queen of Arendelle. Men and women flocking towards the palace gates that haven't been opened since the accident.

She slows her breathing down and calmly called out for the guards to open up the gates.

Everyone enters as the ceremony started. She walked out to the front and is handed the ball and scepter. She quietly panicked as the two items were slowly getting covered in frost.

Once given the cue she puts them back and wore her gloves. Only a few more hours until the end of the party. Then she can retreat back into her calm isolation.

She takes a breath and plastered a calm smile on her face.

"Elsa, -er queen, um" Anna stutters trying to think of how to start. Elsa chuckles a bit and Anna visibly relaxed.

"Did you see what happened a while ago?" Her sister asked.

"See what?" she replied.

"Jack was totally messing with you." Anna answered "Didn't you notice the ball and scepter were freezing up?"

Her shoulders tensed. Anna saw it, she wanted to tell her that it wasn't Jack that frosted those things. She wanted Anna to remember, she wanted to go back to the times when it was just the. . . two of them.

Because Jack Frost is not real.

If he was real he should've been there for her. If he was real he would never leave her alone for 13 years. If he was real then he could've stopped her from hurting Anna.

But he isn't real. She was a fool in believing that someone will actually be able to help her control her powers, that someone cares about her.

"That must've been a trick of the light Anna. It couldn't have happened because Jack Frost isn't real." she replied.

Her sister looked at her strangely, "Of course he's real, who do you think we played with in the snow when we were kids?"

Me.

She tried to change the topic and luckily her sister complied. She ended up passing Anna to some duke for a dance.

She had more time to herself, smiling at all the personalities being introduced to her. Although Anna's statement kept drifting to the front of her mind. How can she still believe in him.

'You promised'

She shook her head and tried to distract herself. She made small talk with the people in front of her and acted as the responsible NORMAL queen they want to see.

After a few minutes Anna returned with a person in tow. But nothing in all her years has prepared her for what she was about to say.

Marriage!

"You can't marry a man you just met." she told her sister. Anna looked betrayed and an argument started. Anna took one of her gloves and her mind went blank.

Fear flooded her thoughts and all she could think of was getting away before. . .

Boom!

Silence. Everyone looked at her in shock. "Monster!"

She ran outside looking for a place to hide. Everywhere was full of people and her heart pounded in her chest. She was pushed back and froze one of the fountains.

She ran.

Anywhere was fine, as long as she is alone. Her mind cleared and she saw herself on top of the North mountain.

Alone.

She was FREE! She can do anything, she can use her powers without hurting anybody.

She practically jumped for joy. After all.

The cold never bothered her anyway.

~X~

Her worst fear came.

Anna looked for her, she wanted her to go home. But she can't! Everyone will get hurt. It's much easier to stay alone where everyone is safe.

"Just stay away and you'll be safe from me!"

But that wasn't the case. In the end she never saved anyone. Going away just made things worked. She should never have left her room.

"Come back Elsa, all we need to do is call Jack! He can help" Anna said, her face convinced she was right.

But she's not.

"Jack Frost isn't real, Anna. He can't help because there's no such thing as Jack Frost!"

"He IS real Elsa, don't tell me you broke your promise! He can help, I know you can control your powers. I trust you! You can fix this"

Fear

Snow wrapped around her and she couldn't see clearly, all she knew is that Anna has to get out of here. Someone else came in and escorted her sister away. She's alone again in her kingdom of isolation.

Until the guards came.

She saw red. She just wanted to be alone! Why can't they understand that she doesn't know how to stop the winter. All she can do is hurt.

The chandelier above her fell and she blacked out.

~X~

"I'm so sorry. I'm so sorry. I'm so sorry" she heard a familiar voice say. She looked around and saw she was shackled to a metal bed in the dungeons.

"I'm so sorry" she heard it again. "I should've been there for you. It's all my fault. I'm so sorry Elsa"

White-no silver hair came into view, familiar icy blue eyes looked into her own as tears started to form. "I'm not sure if you can see me and I must look like an idiot talking to someone who might not even know I'm here but still. . .

"I don't have an excuse. I know I made you promise, but it's all my fault for leaving like that. A few more years and you would've been able to master your powers." The tears started flowing down his pale face "I'm so sorry"

She reached out her hand and wiped a tear from his eyes. He stiffened and looked at her, his lips trembling.

"You can still see me?" he asked, hope shining in his bloodshot eyes.

She nodded

"Will you forgive me?" he asked. Instead of answering she held up her pinky and asked "Promise you won't leave like that again?", he laughed and held her pinky in his like they used to "I promise"

The door opened and Elsa let go of Jack. Hans stepped in and Elsa looked over to where Jack is. He just shrugged and said "He can't see me remember?" She nodded and turned her attention to Hans.

"Anna is dead, you froze her heart."

Her world shattered, her baby sister was dead? "Stop this winter Elsa, before anyone else falls to your powers."

She looked at him "Don't you see, I can't." why can nobody see that. She was trembling. She can feel the fear creeping in and saw Jack stiffen up.

Hans closed the door.

She exploded.

Jack just stood there, glaring at a spot behind the door.

Then he grabbed her hand and they broke out. They ran through the blizzard that she made, trying to find a place that could calm her down.

Then she felt Jack's hand slip from hers and she was alone again.

She saw Hans creeping up to her with a sword in his hand. But she didn't care. Maybe if she was dead the winter would stop. He swung the sword over his head.

"No!", two voices shouted and she heard a crash.

She opened her eyes and saw Anna, frozen in front of her, hand raised as if to stop the incoming attack. Tears flowed down and she hugged her.

Her worst fear came true.

Laughter. That same laugh that she heard when her parents died. Then a scream that sent shivers up her spine.

Then it went silent. She felt warm arms around her and hugged her back.

"Love will thaw a frozen heart" she looked up and saw Anna smiling up at her.

"Love! Of course"

She did it. She made the winter stop. She saw Jack float up to her and smirked "Love huh, I like my version better"

All three laughed. Anna looked at her and she just smiled. "I guess I never really stopped believing".