Fic request: Elsa and Anna are normal sisters until one day Elsa sees Anna in her nightgown, which reveals a bit too much. Despite her best efforts, Elsa can't forget the way Anna looked or how it made her feel. But instead of feeling guilty when Anna gives her playful kisses and hugs, Elsa decides to enjoy it, even taking it a step further to see how Anna reacts. A kiss on the lips, too long hug, etc. Ends with Elsa seducing Anna. Pref. while on the throne, as Anna's in her lap.

Author's note: This is for Tumblr user opus-bloom. Thank you for sending this request in. I'm so sorry for how this turned out though. It took a while for me to get my muse to cooperate. I hope you enjoy this and that I filled this request to your liking. Shout out to Tumblr user hawthorneox for sending me that song, thanks a bunch! Also sorry for any and all mistakes since I just rushed this fic hoping to get it done by Valentine's but oh well, it turned into another monster. So I thought of cutting this into two parts. This is part one and part two will be uploaded soon. And for those who know me because of my other fics, namely The Promise, I'll update it soon-ish.

Title: Accidents

Part: 1 of 2

Warning: Incest

The pale glow of the moon gently caresses the massive windows of the castle, entering the empty hallways and lighting a path for a platinum blonde girl. She walks silently, not wanting to disturb the stillness of the night. The girl exhales slowly, closing her eyes and willing all the soreness to leave her be. She had been sitting in her office all day; going through documents, signing treaties, and making sure that her kingdom is running well without any debacles. Some may think that being a ruler is all fun and games. They make the rules so there really is no downside to it but it really isn't like that. All the paper work can make anyone want to run away, including her.

She just wants to crash in her bed and forget all the poise and etiquette of being a monarch; that is how tired she is. But she can't at the moment, not until she says goodnight to her sister. With her being held inside her room all day, she didn't even have the time to meet her younger sister for lunch like they usually do. She told Kai to apologize profusely but it isn't the same. She doesn't want her sister to think that she's unimportant or that she's ignoring the strawberry blonde again. Never again, that's what she vowed herself.

Thinking about her sister, a small smile forms upon the older girl's lips. It had been three months since her coronation. Three months since she feared her powers so much that it enveloped Arendelle in what seemed to be an eternal winter. Three months since her sister went after her. Three months since she accidentally froze Anna's heart. Anna, her sister, who willingly sacrificed herself for her. Anna who froze into solid ice just to save her. Anna whose act of true love for her thawed the ice in her heart. Anna who loves her. Her, her who only shut her younger sister out. Her who lived year after year in fear of losing her sister, too afraid of the possibility that she may really lose Anna forever.

It was so close to happening too.

But it didn't. Anna is safe and they're fixing the relationship that was broken because of an accident thirteen years ago. She sighs gently, looking back at everything that has happened in their lives. There's still so much more that they need to talk about, so much more to learn about one another. They have been apart for so many years that they seem like strangers to each other but they're getting there. They'll be okay because Anna loves her and she loves Anna. And if there's something that she has learned from all of these years apart, it's that love can make anything happen; even thaw a frozen heart.

It has thawed hers after all.

Her heart wasn't literally frozen like her sister's but it felt like it. She had to hide, conceal who she was from the one person she badly wanted to reach out to. She had to endure, day after day, of hearing her sister knocking on her door. Begging her, asking her what she did wrong. She nearly opened the door and flung herself to Anna because there's nothing more heartbreaking than her sister crying. And yet she stayed put, crying on the other side of the door while she crushes her little sister's spirit as she breaks inside from all the pain she's causing Anna. Her heart froze slowly, steeling herself, making her unfeeling. Turning her into the perfect girl that she always needed to be. One fit to rule a kingdom that she didn't even want. But Anna saved her.

Anna always saves her.

Reaching the younger girl's bedroom door, she pauses. Facing a door separating her from her sister brings back memories of what seemed to be a past life. She doesn't even deserve to open the door, let alone knock. Anna has knocked on her door countless of times but never once did she open them, never once did she let her sister in. But that was before. Now, their doors are always open; she can just go and enter her sister's room because they are never shutting each other out again. Never.

The girl touches the knob and twists, smiling at feeling the door to be unlocked. She pushes the door open and enters, closing it once she's inside. She looks up, greeting her sister. "Anna, I just wanted to te-"

Her eyes widen as her breath is immediately knocked out of her. Standing beside the large bed at the right side of the room is Anna. The younger girl has her hands up, stretching them as her mouth releases a mighty yawn that only Anna can surely do. But it's not the yawning that is of concern to the older girl. No, it's the way her sister looks at this moment.

Her sister who even though is surely not the picture of sophisticated grace right now still seems to be an image of perfection. Her sister who is bathed with moonlight streaming in from the windows making her seem to glow. Her sister who has her hair cascading down her back instead of the braided pigtail she always has during the light of day. Her sister who is only wearing a very short, very white, very sheer nightgown.

The straps hanging on the younger girl's shoulders are so thin, it's a wonder that it's keeping the material in place and giving her sister the little bit of modesty it can offer. Anna's freckled shoulders are on display, and the older girl can't help but want to move closer and memorize each one. Catching her thoughts, the platinum blonde looks down but only sees her sister's legs. She doesn't even know that Anna has legs that seemed to go on and on. Were they always like that? She wants to run her fingers over the smooth expanse of skin showing and bring those legs around her body as she… Wait, what?

She gasps, hurriedly moving back only to bump against the door behind her. Blindly, she tries to reach for the door knob. Her eyes are still stuck at the image before her, etching itself into her memory. Hearing the fumbling of the older girl, Anna turns and sees her sister leaning against the door. She brings her hands down from the yawn and smiles. "Elsa? Elsa! Hey!"

Anna walks towards her sister, the smile still on her face and excitement shining in her eyes but the older girl seems to only panic even more. With every step the younger girl takes, the better view Elsa has of her sister's… figure and that makes her feel something, something she shouldn't feel. Unexpectedly, an ice wall emerges from the floor, separating the two sisters. "Wha- Elsa! What are you doing?" Anna touches the wall, trying to move it but she can't. She starts to bang on the wall with her fists but Elsa doesn't hear any of it. Her heart is beating, her mind is running; she can't seem to focus on anything except the image of Anna in her nightgown.

What is this? What is this feeling that suddenly rushed over her? It's new but it isn't, she knows this feeling but it has always been beneath the surface before. So close but so far away. Yet it's there, waiting for her to notice it. And now that she does, it's wrapping her in its shroud. Enveloping her being and taking over her senses. All of this is because of her sister.

Because of Anna.

Her sister has always been beautiful. They haven't interacted much while growing up because of that accident but she saw glimpses of her sister. Every time she saw Anna even for just a second, she can't help but think she's even more beautiful than the last time. Now, she's a goddess, there's no other word to describe her. A goddess with long flowing hair running down her shoulders. Vibrant electric blue eyes and a smile so beautiful it can make anyone feel the warmth that seems to radiate from the girl. Her mere presence can light up the whole room.

She has not seen someone as gorgeous as her sister. Yes, Anna said she was beautifuller, to quote the younger girl's words, but she begs to differ. There's just something about the younger girl that draws her in. Something that pulls her and makes her want to run towards her sister, hold the younger girl's face in her hands, and ki-.

A cry of anguish jolts the older girl away from her thoughts. Confusedly, she looks for the owner of the voice only to have her eyes widen as she sees her sister's form crumpling down to the floor from the other side of the ice wall. Acting on instinct, she immediately thaws the ice and rushes to the younger girl. Kneeling beside her sister, she wraps her arms around the younger girl and brings her close to herself. She holds Anna tightly as her sister latches herself to Elsa, crying on the older girl's shoulders.

"I'm sorry, Anna. It was an accident. You caught me by surprise. I'm so sorry." Elsa whispers lowly, her voice thick with guilt. She can't believe she just did that. She can't believe she made an ice wall to separate her from her sister. In her defense though, it really was an accident. Seeing Anna like that for the first time just… made her panic? Is that the right term? She has seen Anna before but not in that state of undress or is it under dress? But they were children then, it doesn't count. Right? Her mind is so confused right now.

Elsa also can't believe that she was, is having thoughts and feelings for Anna. Thoughts and feelings she shouldn't even have in the first place. She shouldn't even be thinking about those sort of things for her sister especially if said sister is crying in her arms but she can't seem to help herself. Holding the younger girl so close, she can feel that her sister is very much naked underneath this fabric that she's wearing. She can't think of it as anything more because of how tiny the nightgown is. And from her position, she can see that it has rode up her sister's bare legs again like when she was yawning a while ago, showing more skin than before.

Dear god, please give her strength.

"Don't leave me again, Elsa. Please." Anna whimpers against her neck. The older girl feels a tug in her heartstrings at hearing her sister's plea. Her icy blue eyes immediately soften as her mind seems to focus on her distressed sister, she can worry about everything else after she has calmed Anna down. Anna is more important than her thoughts and feelings. "I won't, Anna. I'm here, I won't leave you."

Sniffling, the younger girl looks up. Elsa smiles shyly; reaching out, moving her sister's hair away from her adorably freckled face, and tucking it behind Anna's ear. She slowly leans forward and plants a gentle kiss on her sister's forehead lovingly. Her lips seem to tingle from the contact against Anna's skin but she gives this no mind. Anna needs her right now, that's all that matters. "Hi, firefly." Anna giggles, a smile lighting up her face as she snuggles close to Elsa. "Hi, flurry."

Elsa smiles, leaning closer to her sister. Her arms tighten their hold around the younger girl as she rests her head against Anna's shoulder while her sister does the same. They stay like that for what seems like eternity, both not wanting to let the other go. Their hearts beat in time with one another, comforting each other with their steady rhythm. They both sigh at the same time, tearing laughter from both of their lips.

Elsa gets herself under control first and kisses Anna again, this time on the younger girl's cheek. Her lips staying a second longer than normal but she pulls away, not wanting to look suspicious to her sister. All she can think about is pressing her lips against, no, she shouldn't think like that; she smiles at the younger girl, willing herself to conceal the feelings whirling inside of her. "I'm right here, Anna."

The younger girl grins, bringing her arms around her sister's neck and kisses Elsa's cheek as well. "I know. Why did you freak out anyway?" Elsa immediately flushes, a blush creeping up her cheeks as she looks down, not wanting to see her sister's reaction. "I-It was a-an accident. I d-didn't know you were about to go to bed."

Anna laughs at her sister's words, making the older girl look up with question in her eyes. At the back of her mind, she can't help but notice that her sister has a melodic laughter. It is such a lovely sound that fills her chest with warmth. "It's okay, Elsa! You don't need to be shy! We bathed together when we were kids, remember?"

The older girl's mind suddenly recalls all those times when she and Anna were inside the baths, playing with the water as Gerda tries to scrub the both of them clean. Both of them laughing and just having a good time. The memory suddenly morphs though as the older girl thinks about her and Anna bathing but not like when they were children. Her mind forms an image of Anna wet from the water of the tub as the younger girl straddles her sister with her lips kissing down her jaw towards… No! She can't think like that right now! Not with Anna practically naked on top of her.

Oh my! Anna is almost naked and on top of her!

Elsa squeaks, jumping away from the embrace with her sister and surprising the younger girl from the sudden movement. "I just wanted to say good night and that I'll see you tomorrow. Good night, Anna." Elsa rushes out, moving quickly towards the door and leaving the room like she was being burned alive. Flecks of snow follow her every step, forming and falling down the floor. She doesn't see her sister looking at her oddly since she was too focused on pushing the thoughts away from her mind while she hurriedly makes her way to her bedroom.

"Elsa… Psst… Wake up, Elsa." A voice whispers somewhere close to a sleeping form bundled up in sheets. Elsa turns away from the voice, mumbling something about needing five more minutes. This makes the owner of the voice giggle as a finger pokes the older girl lightly. "Come on, Elsa. Wake up."

"Anna, go back to sleep." Elsa grumbles exasperated, willing herself to go back to the world of the unconscious. She is still so tired from having worked all of yesterday and needs all the rest she can get for another day of reading over paperwork. She knows that the sun is not up yet so she deserves to spend what little time she has on sleep, especially since she was up all night.

The sheets she has draped over herself is immediately pulled away from her as a body jumps on top of Elsa, making her groan. Even after all these years, Anna can still be so pushy with playing when the 'sky is awake' but she doesn't fault the younger girl. They have been separated for so long after all and she understands the need to be closer, she just wishes that it happens after she gets a decent amount of sleep. She opens her eyes to admonish the younger girl for suddenly jumping on top of her only to gasp lightly at the sight before her.

Anna is wearing the same nightgown that she had last night. The same outfit that seemed to be carved at the back of her eyelids because even when she closes her eyes, she can still see the image of her sister in it. But the sight before her is even more awe-inducing than the night before. Mostly because the straps of the said nightgown are slowly falling off her sister's shoulders letting anyone who dares to look see a glimpse of the younger girl's cleavage. If anyone else does dare to look at her sister, they'll surely find themselves frozen solid because no one is allowed to look at Anna like this. Not even that donkey faced reindeer guy who she can't remember the name at the moment. Thank god, Anna broke it off with him and thought of just being friends. If that guy even touched her sister, she would kill him because Anna belongs to her. That's right, no one is allowed to touch Anna, not even look at her in a funny way because Anna is hers. She has always been hers.

…

…

…

Wait…

…

…

…

Oh no… No… No… No…

She can't.

But she does.

She loves Anna.

She loves Anna more than a sister.

She's in love with her sister.

As the realization washes over her, she looks at the girl straddling her in a new light. As if she can see clearly now and there's nothing blocking her vision. Her icy blue eyes widen as Anna smirks at her. Seeing her younger sister with that look on her face makes her want to whimper. How can her sister look like this? How can her sister elicit such a reaction from her with just a tiny movement of the lips? Lips? Her eyes trail down and stare at the lips of the younger girl. Elsa feels her throat suddenly drying up as she unconsciously licks her lips. The action only seems to entice Anna as she slowly leans forward, letting her body touch the older girl's beneath her. Elsa feels a shudder run down her spine at feeling Anna resting above her. Her eyes never leaving her sister's lips, wanting to know how it would feel like to have them on her own. Wanting to taste them against her lips. "You finally figured it out, flurry."

Elsa immediately tears her eyes away from her sister's lips to look at Anna's eyes. Those lightning blue orbs that are usually so lively, so vibrant are now darkening with a swirl of emotions. Love, adoration, longing, lust, acceptance; there are just too many to identify but the older girl understands. She understands what Anna means. Elsa nods slowly, her eyes glazing over; mesmerized at the sight of her sister. She tilts her head up, closing her eyes and capturing the younger girl's lips in hers.

The kiss is chaste. Like tasting a new delicacy for the first time, apprehensive yet excited. Their lips mould against one another and the older girl can't help but feel tingles running all over her body as warmth bubbles in her chest. Only Anna can make her feel this warmth.

With powers over winter comes the inevitable fact of how cold she always is. She doesn't mind one bit because it never bothered her but growing up, she wondered what warmth felt like. After the accident, she forgot what it feels like to be warm. She lived in fear, of ice and cold and darkness. Even with their parents showing her how much they do love her, it wasn't the same to what Anna makes her feel. She knows that her parents feared her powers, why would they make a prison specifically designed for her if they didn't, but Anna never did. Anna never feared her powers, never feared her. Anna still doesn't. In her sister's eyes, she is no monster. She is not someone to be feared but loved.

She can feel tears welling up in her closed eyes and slowly trickling down her cheeks. She can taste her tears upon her lips and knows that Anna can as well but all Elsa does is bring her hands around the younger girl, pulling her close. Letting every emotion, all the love and gratitude and remorse and regret and longing, just everything, be felt in this kiss.

Elsa feels her sister slowly pulling away from the kiss. She opens her eyes to see Anna smiling gently at her. The older girl feels her sister cupping her cheeks in her hands lovingly as Anna brushes her tears away. She smiles back, moving her head slightly to place a kiss against the younger girl's palm.

"Don't cry, Elsa." Anna whispers lowly. She places a light kiss against her sister's forehead then moving her lips lower to her cheeks and planting kisses on them as well. She moves again and this time hovers above Elsa's lips, her eyes closing as she exhales. "You have me. Don't worry. I love you."

The older girl's breath hitches as her heart misses a beat. Everything went still for a moment but then immediately restarts again. Her heart starts beating fast, she inhales deeply as her eyes shine with wonder. She already heard Anna say this. Her sister said it after she thawed and every moment after. But hearing the younger girl say those same words now, it's like hearing them again for the first time. "You love me?"

Anna laughs that entrancing laughter of hers, making the older girl smile. Her sister is really just so beautiful. She raises her hands and lightly caresses her sister's freckled cheeks. Her knuckles grazing gently against the skin before she cups them in her palms, stopping the younger girl's laughter as she brings Anna's face lower and captures her sister's lips in another kiss.

Unlike the one before, this kiss is nothing but chaste. Their teeth clash as a hunger burns inside of them. A gentle nip to the older girl's lips brings out a moan from Elsa, letting Anna slip her tongue inside her sister's parted lips. Feeling the younger girl's tongue tasting her, Elsa moans louder as her hands snake around her sister. Pulling the younger girl close, she lets Anna dictate the pace of the kiss.

Elsa feels that warmth building inside of her again. But this time it isn't really just warmth, it's a fire. Like molten lava, or what she thinks it will feel like if she touches lava, is running down through her veins. Coursing around her body and settling somewhere near the pit of her stomach. There's a burning there, a coiling, something she can't explain just that there's a need, a want. Her body moves by itself, humping upwards but instead of feeling the soft body of her sister, she feels something hard and solid instead. She opens her eyes only to see Anna frozen solid in front of her. A scream tears away from her lips before blackness consumes her.

"ANNA!"

Sitting upright in bed, Elsa pants loudly. Sweat dripping down her forehead even though the room is frosted in ice. She looks up and starts searching for her sister only to come up with an empty room. Sighing, she plops back on her bed and brings her right arm to cover her face.

It was just a dream. A very vivid dream. A dream about Anna being frozen but Anna isn't frozen, she's sleeping in her room. She can go check right now if she wants. She doesn't need to panic. Anna is safe. Anna is alive. It wasn't her fault. It was an accident.

It was just a dream.

It was just a dream.

It was just a dream.

Elsa takes off the sheets on her, gets out of bed, and walks out of the bedroom. Her mind is reeling so much, she didn't even bother to thaw the ice covering her room or even find any slippers to wear. Walking barefoot on the empty hall, she can see the beginning of dawn streaming in from the windows. She wrings her hands nervously, still too shaken up by the dream to calm down. She breathes deeply, telling herself over and over again that Anna is safe. She curls towards herself as she hurriedly walks down the hallway to her sister's room.

She reaches Anna's bedroom door and immediately opens it, not thinking about anything else except for the need to see her sister. Creeping in slowly, she stops a few steps before reaching the bed. She gives off a sigh as she sees her sister's sleeping form, laughing lightly as she hears Anna snore. She tiptoes towards her sister, kneeling on Anna's bedside and letting her hand touch the younger girl's cheek lightly to make herself believe that this is reality.

Her hand cups her sister's cheek lovingly as her eyes soften with relief. Seeing Anna like this calms the raging emotions running rampant inside of her just moments ago. Like magic, everything just stills as if Anna is the buoy that keeps her afloat from drowning. Anna is safe. Anna is right here. She's sleeping in her bed peacefully.

Elsa's lips form a gentle smile and she leans in slowly, giving a light kiss to her sister's forehead. She feels her sister shift from the action, she slowly pulls away to see the younger girl's face more clearly. She knows that Anna is waking up. She doesn't even feel guilty for waking her sister, too relieved to even bother thinking about things other than the fact that Anna is safe. That is all that matters.

The strawberry blonde girl's eyes slowly flutter open as Elsa smiles wider. Seeing her sister's lightning blue orbs sends a flutter in her chest, warmth spreading immediately across her being. The older girl leans down again and plants a loving kiss on Anna's cheek. "Hi, firefly."

"Elsa?" The younger girl asks confusedly, wrinkling her nose. Elsa giggles at the adorable expression on her sister's face. Feeling that same tug at her heartstrings from the night before. Suddenly, like a tidal wave, the other events from her dream crash over her including the realization of her feelings for her sister. Her eyes widen as she moves back slightly but a voice stills her and brings her back to reality. "Are you okay, Elsa?"

Looking down, she sees the worried expression on her sister's face; the same expression as the one Anna had last night when the she rushed towards her weeping sister on the floor. Elsa remembers the events from the night before and guilt washes over. She just left her sister. How can she do that? She told herself she will never leave Anna again. What did she do? She shouldn't have let her feelings get the better of her. Anna is more important after all. Hasn't she learned anything? Hiding things from her sister will only end badly but this is different. She loves Anna. She doesn't want her sister to turn away from her, to be disgusted with her. But maybe Anna feels the same; she has a chance, doesn't she? She bites her lower lip lightly, her mind running again with so many thoughts.

Ice starts to form along the walls of the younger girl's room but Elsa is too lost in her own mind to care. Suddenly, she feels herself being wrapped up in a tight embrace. Her sister's face resting on her shoulder as Anna's arms wind themselves around her neck, pulling her closer. "It's okay, Elsa. You had a dream again, didn't you? I'm right here, flurry. I'm right here."

Elsa shakes her head, wanting the other girl to let go. How can her sister touch her when she's having these thoughts. Anna should stay away from her. She's a monster after all. But her sister doesn't let go, only tightening the hold she has on Elsa. "Please let me in, flurry. I love you, remember? I love you, Elsa."

A memory pushes its way to the forefront of Elsa's mind. A memory from three months ago. A memory of Olaf saying an act of true love can thaw a frozen heart. True love. Anna truly does love her. No matter what she does or what she feels, Anna will always love her. Anna will always be there for her. Anna loves her.

Elsa's arms wrap around her sister, holding the younger girl close to herself. The ice inside the room suddenly stops spreading. She buries her face on the crook of Anna's neck as a sob escapes her lips. Tears flow down her cheeks as she clings to her sister tightly. Her heart beating fast but a lightness enveloping her being, like a weight has been lifted from her.

She loves Anna. And Anna loves her. She isn't sure if it's the same way that she feels for her sister. She isn't sure if it's more than just love for a family member but right now, it's okay. Just having Anna in her arms is enough for now. But she'll find a way to know what her sister feels soon enough. She'll figure out if Anna loves her as more than a sister. Because she is Anna's true love after all.