Contains BDSM

TW: Underage sex for the first chapter

It was her birthday.

"Oh, Elsa... faster... harder! FUCK ME!"

"That's right, you slut. I'll fuck you. I'll fuck you so hard, you break."

Well... It was her birthday.

Now, things were different.

Now, birthdays were just another excuse for... you know, one of those days.

The days where they would just... lay in bed, one dominating, one submitting, both of them enjoy the pleasure, the pain, moaning each other's name, talking dirty and—

Not only did it happen in birthdays, it was now an everyday thing to them.

Their parents were dead anyways. They were turning into adults anyways. They were... sisters. Unacceptable. But it felt right. It felt... pleasurable.

Anna was 16 when this all started and Elsa was 19 when she decided that moping around in her own room wouldn't help anymore.

Help as in...

Elsa's lust for her sister. Her cravings were just getting bigger day by day.

She'd usually stare at her sister in a distance, watching her play with her ugh, disgusting friend with a reindeer. How did a princess manage to become friends with someone like him?!

Elsa was furious at the thought of Anna marrying the boy like him. He was filthy, had too many muscles, had messy hair, no manners, and would push and pull Anna however he liked. His reindeer. Pure. Disgust.

But Anna was laughing and smiling as she ran around the front of the castle's bridge, having the guards watch over them in a distance and Elsa watching them from the top of the castle. That was her bedroom.

She frowned at the sight of the three and managed to unleash the falling snowflakes. She noticed and with a flick of her hand, it all disappeared.

Her powers were already all in her control. She didn't have to worry about it anymore.

All she had to worry about was her sister. Her lust for her sister.

She was disgusted with herself.

Disgusted.

Look, who's talking?

Her room was full of toys. No, not toys for children. She had toys that... well, it was for pleasure.

She kept them hidden. Whether it was under the bed, in her closet, behind the bed post, under a tile of floor, it was all well hidden.

Elsa was 19. It was understandable to have such toys. But to have such lust for her younger sister? Incredible.

She heard a knock on the door and she blinked, realizing that she'd been standing behind her window for 15 minutes already. She looked out, finding no one playing in the snow.

"Elsa!" The door flung open, only to find a coppered hair girl running up to her with a pile of snow on top of her head.

Elsa hated the sight of it and with a snap of a finger, she got rid of the pile, making Anna all nice and dry and warm.

Anna blinked and paused to tap on her head. "Oh. Oh, thanks!" she said. Elsa smiled. But inside her heart was beating so hard.

"Had fun?" Elsa asked as Anna came up to hug her and gave her a kiss on the cheek before letting herself up on the bed. With a flick of a hand, Elsa sent out a gust of wind to close the door. She never liked anyone leaving the door open, even when the siblings were having a private meeting together—especially when they were having a private meeting together.

Anna nodded with a chuckle, her chest heaving up and down and she breathed ever so slowly.

"Yeah! Hey, you know what we did?" Elsa shook her head and sat down on the bed beside Anna.

"What did you do?"

"We went hiking today! We went to Kristoff's, I don't know what they call it, trolls? Anyway, they can talk! I thought they were stones!"

"Stones? Anna, it's your birthday today. You should be eating cake or something. I don't know, I've been stuck in the room for 19 years."

Anna rolled her eyes. "What's the fun when you only get to eat cake and unwrap presents and go dance with some 30 year old disgusting man who wants a 16 year old bride tonight? Let me have some fun, Elsa!"

"Dancing is fun."

"Yeah it is, until you have to do it with a stranger that doesn't really know how to dance and would step on your feet every minute."

"Hm, well, I just don't want you to get use to that blondie. He's a bit... rough."

"Oh, I like it rough!" Um... "Not... in that sense, I mean. Look, Kristoff is a great friend. You just need to get to know him first!"

Elsa smiled. "I'm sure I'll get to know him better." She was just about to get out of bed until Anna grabbed her wrist and pulled her back to bed, landing on her side with an 'oof'.

"A-Anna?"

Anna looked at her with a very serious expression now, frowning at her elder sister.

"Look, I know this is stupid, but ever since you came out of your shell, you still don't really talk to me. Is something bothering you?"

Ah, noticeable.

Elsa gulped and her eyes were suddenly on Anna's, but on her lips.

"Is... our parents death bothering you?"

Silence.

"God, I'm so stupid!" Anna flailed her arms in the air. "How did I not notice?! You think their death is your fault, don't you?!"

Okay that was half the truth.

Suddenly, Elsa felt cold hands on her cheeks.

"Elsa, you can't start thinking that! Something's wrong with you if you continue to think like that! Not that something is wrong with you right now, but that's beside the point! Listen, Ma and Pa won't be happy with you if they're here right now."

Elsa, with her leftover courage, chuckled. "No, what's up with that? I'm not... I know I'm not at fault here." Again, her eyes were not looking at her younger sister.

Anna squeezed her cheeks. "Then tell me what's bothering you all of the sudden? You're basically trying to ignore me if I never came to talk to you first. Is it me?"

Silence.

"It's me, isn't it?"

Elsa wanted to say no it wasn't. But deep down in her heart, she had to admit, it was Anna. And her.

"No, it's really not—"

"Then what is?"

"I—"

"Ugh, all this time I thought you were hiding from me because of our parents. But really, it has something to do with me!"

"Anna—"

"Elsa , really, I did something to make you hide from me right? What is—"

Huh?

Anna blinked, feeling an unfamiliar wetness and coldness and even warmth on her lips. What was going on? She still hadn't come into the realization that Elsa's lips were against hers.

Her heart was pounding, her head was blank and her skin... all tingly from the feeling of Elsa against her, arms wrapped around Anna's back as it ran up and down, leaving trails of shivers.

And before she knew it, her eyes were slowly closing, not even resisting Elsa.

She let out a slight moan as they kissed, bodies against each other.

Elsa was the first to pull away, but the second to even realize what she'd just done.

"Oh my god, Elsa..." Anna muttered, her eyes widened, her hand over her mouth. "Y-You... what did we just do...?"

Elsa blinked. What did they do? They were talking and then—

"Oh no, Anna... I'm so sorry! I-I didn't mean to—"

"That's... what you've been hiding from me all along...?"

"I—" Elsa was speechless and ashamed from her act.

"You love me... but, it's a different kind...

"You're disgusted."

Anna blinked. Was she really disgusted? If she was, she should've been running out of her room by now. Anna grabbed her head and shook confusingly.

I-I don't know why. I-I just... I didn't feel disgusted." Anna laughed. "I don't feel bad... Not... disgusted."

Not disgusted.

Elsa gulped.

This was her only chance. Her only chance to have Anna's love.

"I-I don't know, Elsa... what is this? I don't get it. You're my sister. I don't feel disgusted! My heart is beating! What's happening?!" Anna shouted.

Elsa swallowed. "A-Are you willing to try it again." She didn't even know why she'd say that.

Anna just looked at her, very much in shocked for a second.

Elsa was getting nervous and couldn't help letting out an expression of worry and panic.

She blinked when she could barely hear what Anna just said. "W-What?"

Anna breathed in. "I... want to try it again..."

Did she really just say that? Elsa couldn't believe it. She swallowed, feeling Anna's arms around her waist. "A-Alright... we... are done when you decide it is..." And closer they got. Their eyes lids were fluttering as they closed, their breath skimming each other's skin.

Heartbeats could be heard, could be felt as their lips barely touched each other.

Elsa had her eyes open slight, watching the younger girl, biting her lips, clearing wanting the kiss, clearly wanting Elsa.

She was shivering, anxious and Elsa continued to stare, admiring how beautiful Anna had gotten all these years.

"Beautiful..." she muttered to herself before really crashing her lips with Anna's. And here, the younger girl was surprised at the sudden, but smooth and warm contact and she was... possibly, maybe even liked it.

Elsa's hands were on Anna's cheeks now, holding her in place.

Anna was moaning suddenly and Elsa couldn't help the low growl of lust out from her throat. So sweet, she thought. Her lips, so sweet, so beautiful, so tasteful.

And when they pulled away, a strand of saliva attached onto both of their bottom lips until Elsa made the move to lick her own lips to get rid of it.

Anna's eyes were dark. Elsa knew hers were even darker in lust.

They just stared into space for a few moments, thinking about that kiss and how their relationship was now. This was incredible.

"How do you feel...?" Elsa asked.

Anna shook her head. "I don't know. My heart is just pounding really loudly. I can't think... Maybe we should—"

Elsa smirked for a while. "Try it again?" This was ridiculous.

Anna let out a meek nod. "Yeah..."

And here, they did it again, just pecking each other's lips for a short while until it slowly became longer, full of bites, full of skin against skin.

Elsa was on top of her little sister now, just hovering above her, straddling her.

Anna was moaning suddenly as Elsa pulled away, just to hear Anna whimper at the sudden coldness on her lips.

"Anna..."

They were breathing heavily as Elsa lay back down against Anna and kissed her again, this time with her tongue licking the sweetness of Anna's lips. The younger sibling was moaning again, clearly asking for more.

And with Anna granting Elsa's tongue in her, they were wrestling, feeling each other, worshipping each other.

"E-Elsa..." Anna let out as her sister left her lips and latched it on her neck, kissing it tenderly.

"Do you want this...?" Elsa muttered against her skin. The only response was Anna whimpering and a hand in Elsa's hair.

That wasn't the response Elsa wanted.

A gust of wind from Elsa lifted Anna's skirt, revealing her stocking covered legs and with her hand, she landed a hard smack. The girl screamed, clenching on Elsa's hair.

"Is this what you want...?" she whispered once more, soothing the striking pain for Anna, letting her cold hand massage her burning thigh. "Answer me..."

That was a great feeling and Anna just couldn't help nodding, muttering, "yes, yes, yes, yes... oh Elsa... I want this... I love you..."

And immediately, Elsa went back to work, kissing the girl lightly first and then letting it become more heavy, more intense, and even harsher to the point where Elsa was actually biting the girl. And Anna seemed to enjoy it, for she was pulling her head back, moaning and groaning into Elsa's kisses.

"Please..." Elsa heard her mutter out. She opened her eyes, darkened in desire and lust. Elsa hovered above Anna once more; her fingers suddenly gripping on her sister's chin, making her face her.

"Please, what?"

Anna gulped, feeling different about this dominant side of Elsa.

The blonde's face was suddenly just a few millimeters away, looking at her with much intensity and god, sex.

"Oh gods..." Anna muttered to herself, immediately shivers going down her spine as she continued to stare at Elsa, enjoying this side of her.

"Please... what... my sister?" Elsa whispered, a smirk slowly perking up her face. This was fun. Watching her sister become so weak, shy, and embarrassed. This was fun.

"Please... touch me..."

"Touch you?"

"Fuck me, Elsa..."

This was what Elsa wanted. Her. She wanted to devour, eat her up. All of her.

And fucking they did. Elsa kissed her lips softly this time, slowly ripping Anna's clothes off after ripping hers off, only leaving nothing but a piece of underwear to cover their womanhood.

Elsa pulled away just to get a good look on the girl's body, suddenly smiling at the beauty of the structure. "Beautiful..." she whispered as she sat herself on Anna's stomach. "So... beautiful..." Her fingers ran down on top of Anna's breast and down to her arching stomach, tickling at the shivering and warm skin of Anna's, letting the sensation dominate her whole.

"Mmm... Elsa..." A moan came from the top and hand coming to Elsa's pale, glistering legs. The blonde looked up, drooling at the sight of Anna's head burrowed in the huge amount of pillows placed beneath her, her eyes heavy as she looked at her sister.

So sexy, Elsa thought.

"Elsa... please..." Anna breathed. "Fuck me... however you like... I love you..."

I love you. That phrase. But what kind of love?

"Patience," Elsa shushed her, fingers dancing in a circle on Anna's stomach. But she was wriggling beneath her uncontrollably, moaning impatiently.

"Have you tried masturbating?" Elsa started to ask as she let her fingers slowly crawl down to Anna's underwear, playing with the hem of it.

Anna wanted her to hurry, to fuck her right now, to get rid of the aching she had down there. She didn't need all these talking.

"Y-Yes..." she replied. "Gods, please... fuck me right now..."

That got Elsa and quickly she bent over to crash her lips against Anna, letting the girl hug her back, scratching it ever so often.

Elsa had ideas in her mind.

Really... not the ones that were appropriate anyways.

She had to pick two or three as she continued to kiss Anna, letting her lips run through her throat and down to her breast until she was staring directly at it. She looked up only to see Anna looking back at her, with her breath heavy and thick.

Mine, she thought. Everything, all of you, all mine.

"E-Elsa... please..."

She flicked her tongue on the perked nub once and letting Anna moan at the unfamiliar sensation before getting out of bed.

"Close your eyes," Elsa commanded.

"W-What—"

"Do it, my dear sister."

She did and before she knew it, with some shuffling with clothes and all that, she felt a piece of cloth over her eyes and cold metal on both of her wrist, above her head.

Anna tilted her head in confusion and tugged her wrist. It wouldn't budge.

The bed creaked as Elsa climbed on, cupping on Anna's cheeks with her hands and kissed her forehead.

"E-Elsa? What are you doing...?"

"Safe word for today: Birthday."

That whisper made Anna cringe and sighed delightfully.

Her reaction intensified even more when she felt lips wrapped around her nipple and a hand cupping her breast.

"E-Elsa!" she screamed, arching her back and tugging her wrist once more. She was moving quite a lot, Elsa knowing that she probably had few to no experience at all. Not that Elsa had any experience as well but, she'd read quite a lot... about these sort of things.

Immediately, panties were off of Anna and a teasing hand was left on Anna's inner thigh, rubbing it up and down, scratching occasionally.

Moaning turned into whimpering and cries now, begging for Elsa to land a finger on her already wet pussy.

Instead Elsa only landed another strike of a hand on her thigh, only to make Anna moan instead.

"Don't rush me," she commanded. "Don't scream. Don't cry. Don't make a sound and you'll get your reward."

That shut Anna up, looking down on the girl between her breasts in want and lust.

She relaxed and pulled her head back once more as Elsa continued to devour her breasts. She bit her lips and was sure that they would be bleed now. Her wrists were bruising.

Hands were on her thighs, fingers dancing lightly on her skin and the only response to those irresistible fingers were goose bumps filling her body.

Tongue continued to lick, flick, wrap and press on Anna's bud of nerves attached on her breasts. And those eyes... god, those dark blue eyes filled with sex and dirty lust were staring right at the squirming Anna who couldn't do anything but submit herself into the pleasure torture of Elsa.

"Good girl..." Elsa muttered against her skin, lips only skimming down Anna's stomach. "You may moan for me," she whispered.

"Ah! Oh, Elsa!" Anna gasped, breathing heavily, her face hidden behind her arm, having the sudden interest to bit herself as she felt another loud moan coming out when Elsa licked just above her pubic bone.

She could feel the stare. Ooh, the cold stare Elsa was giving her.

Smack.

Anna moaned at the pain of Elsa's palm striking her ever so often.

"You like your sister fucking you?"

Oh fuck. Fuck, fuck, fuck.

"A 16 year old girl loves her older sister fucking her, huh? Anna answer me."

Hands were lifted of Anna's skin only to leave emptiness and coldness. She couldn't stand it.

She needed someone to take care of the aching and throbbing of her pussy.

"You love it when I'm fucking you right now, don't you?" She continued to dirty talk. And for some reason, Anna was so aroused and was getting even more arouse by the dominating voice of Elsa's, all deep, husky and sexy for her. Oh gods.

How could anyone hold back from her voice?

Smack.

"Answer me!"

"Ugh, yes! Yes! I fucking love it! God, Elsa, you're making me feel so aroused!"

"You fucking whore! Are you a whore?!"

"Yes!"

"Whose?!"

"Yours! Only yours!" Please...

Satisfied from her answer, she got between Anna's legs, suddenly surprised by the sudden gushing wetness, spreading to her thighs and wetting the sheet. Anna was whimpering, feeling Elsa's breath against her smoking pussy.

"Please... Elsa..."

Smack.

"Call me Elsa one last time and I'll end this." Knowing that she'd never let it end.

"Please... my Queen, Your majesty... my love... fuck me..."

"Fucking, I will. And I'll give you a pleasant surprise."

Please...

With her head between Anna's legs, she let herself dive into her nectar, her nerves, driving Anna into madness, screaming out nonsense. She grounded her hips against Elsa's mouth.

"Oh, Elsa... ah, ah..." she moaned as Elsa continued to flick her tongue around Anna's clit and downwards ever so softly, not enough to make Anna come.

"Fingers... please..." Anna managed to gasped out, grasping onto the handcuffs.

Elsa smirked and looked at the poor, desperate girl, adding two fingers in. It wasn't a surprise that it went in easily, sending Anna into heaven.

Push and pull her fingers went, up and down her tongue went. Finding Anna's g-spot and smirk and pressed against it and quickly pulled herself away just as she felt Anna clench against her fingers.

"AHHH—" And everything stopped.

"E-Elsa... what are you doing?"

Elsa stayed quiet as she got out of bed and out to the door.

"Elsa?"

Well, if Elsa thought this was a pleasant surprise, she thought wrong.

But Elsa wasn't here anymore, leaving the girl hanging and totally aroused. This was the first time she'd ever been denied. Or even had sex, for that matter.

Anna was wriggling emptily in bed, trying to feel some warmth, some friction to end the aching and throbbing pain of her pussy. She found nothing and just ended up lying in bed in frustration.

Elsa only came back a few moments later with a cup of ice cubes.

Climbing on top of Anna, she couldn't even tell if Anna was asleep. She smirked.

Regardless of that, Elsa ended up picking up two pieces of cube and pressed it right onto her nipple harder and harder every time, making the girl gasp.

"Elsa!"

"My Queen, you whore!"

"M-MY QUEEN!"

She left the cubes there to melt and took out more.

Elsa went lower, letting the ice cubes leave trails of water down Anna's hot body. Lower and lower and she ended up staring at Anna's pussy once again, listening to the music of her capture prey's moans.

"Y-your majesty..." she sighed out, arching her back to feel some kind of empty warmth.

She suddenly felt a cube pressed against her clit.

"Oh my—Ah!" she screamed, feeling a tongue inside of her now and—

There was an ice cube, pressed against her entrance and on top of Elsa's tongue. "Dear god..." she moaned, tugging the chains ever so often, wanting rid of the blindfolds.

"OH FUCK... fuck fuck fuck..." she muttered to herself as Elsa hummed, continued to kiss her there, making Anna feel hot and cold all over.

The sounds that Elsa was making with Anna's pussy were incredible and were so dirty and—

"E-ELSA!" she screamed, suddenly letting her body submit into a shaking and quivering manner as thick trails of liquid came out of her and only ended up being slurped up by Elsa. She continued to quiver and ended up crying at the strange feeling.

When Anna finally finished becoming undone, Elsa gave her sex one last lick and a swipe of a hand before coming up to Anna to hug.

"W-What was that?" Anna asked, confused by her shaking body from before and now her body all limped and tired. Her wrists were finally released from the cuffs.

"You squirted," Elsa replied with a smirk, pulling the blindfolds away.

The girl blushed as she stared at Elsa. "S-Squirted..."

Coming up to her, Elsa hugged Anna's body and kissed her body. "Must've felt that great, huh?"

Anna hummed in Elsa's arms, saying nothing. "You like doing these stuff?" Anna asked, nodding to the abandoned cuffs and blindfold.

Elsa shrugged. "If I want to spicy things up a bit. How does it feel?"

"I-I want to say it feels amazing but... it's strange..."

"How do you feel about me, then?"

Anna paused before saying anything. This was something that needed thinking. But Anna had enough of thinking. She didn't need to be alone again. "I love you... as someone else." She looked up. "You're special."

That made Elsa smile.

"This is the best birthday present ever," Anna continued.

That made Elsa smile even more, kissing Anna's forehead.

"Happy birthday."