When Elsa said her last - no wait, first - christmas present was going to be in her room, she kind of expected something personal and secret that she couldn't open up in front of Kai, Gerda, Kristoff, Olaf, and whichever guard or dignitary that was going to be there in the dining hall with them after dinner on Christmas morning.

Perhaps Elsa had secretly bought her something impromptu and was embarrassed about joining the Christmas spirit to hand it to her personally or something. Or perhaps Elsa was going to give her a new pillow which would have been dumb to put under the Christmas tree because it would've been obvious and more convenient to present in her chambers.

Or maybe it was some lingerie Elsa had secretly bought and was too shy to show, or present under the Christmas tree. Or maybe a wedding proposal even though they couldn't be married she could chase off kings, princes and knights of other kingdoms with by pretending she was engaged.

To be frank, she did not even expect a single present sitting by the tree waiting to be opened on Christmas morning, let alone her sister in an translucent nightgown made of snow and ice sitting in her bed with her legs spread out, handcuffed.

The princess slapped her forehead- "Ow!" She wasn't dreaming.

"Anna!" The rattling of the handcuffs caught her attention and her attention flew back to her as-good-as-naked sister who was now sitting even straighter with her bright blue eyes that shined in her dark room. "What did you slap yourself for?"

"E-E-Elsa, are you… wait, is this- No, Elsa, a little help here?"

The blue eyes on her darted and Elsa sheepishly said, "Merry Christmas? You did give me you as my birthday present…"

"Wrapped up in a box, Elsa. Where's the box?"

"I'd die before you open it, considering how late you returned."

"That's because I was looking for you!" Silenced, Elsa pouted her lips. The princess shuffled behind the door for a moment before speaking up again as she strode towards her bed, "So… sex?"

Elsa rolled her eyes, "No, not sex. I'm under arrest for having a romantic relationship with my sister and this is my prison."

And then it was Anna's turn to roll her eyes. Teal turned dark green and Elsa's eyes widened. "Getting sassy now, are we? Such a gutsy girl… My, my." She pulled Elsa down by her ankle as she climbed into bed. A yip came along with the rattling of the cuffs this time.

She pulled the tie out of her hair letting her braided bun fall to cover her sister's eyes and untied her hair, pulling her braid down her shoulder. She had always loved it when her sister let her hair down like that.

With her heart thumping in her ears, her hands shaking after they have left the back of Elsa's head. "C-can you see?"

The queen giggled, "No," prompting a shaky and light slap on her thigh which almost made her laugh again if not for her biting her lips.

"Come on! I'm nervous here!" A tint of pink cover her cheeks and Anna wished the moonlight did not shine on her face.

Anna watched as her sister's chest rose and fell as she took long, deep breaths to stop laughing.

Mesmerising.

How could anyone be so beautiful in everything they did? Especially in this position. Elsa had both hands cuffed to her headboard and she was sitting between her legs, for fuck's sake.

Right.

Fuck.

"Oh-oh oh oh, right. Um-um um- Elsa! Stop laughing!"

"I'm sorry, princess, you…" Elsa blinked the laugh in her eyes away and returned to her role. With a confident smirk, she sassed, "I apologise, your highness. Your prisoner begs for forgiveness."

"T-that's more like it." Wait a minute. She lowered her head till inches before Elsa's face and felt her sister's breath brush her heated, tinged, cheeks. "Psst, Elsa, this one's made of ice, right?" She asked softly, pointing a finger to her sister's chest.

Elsa had to hold back a laugh again, "Yes, your highness."

"Good so I can tear it."

And her hands flew. Ignoring the coldness of the cloth, she felt them rip easily in her grasps, bits melting in her hand. Once all strip of cloth was off her sister, Anna licked her lips at the sight.

"Beautiful," the word left her lips before she even knew it. Elsa shivered, whether it was from cold or nervousness, Anna didn't care. But before the queen was about to call her name, fingers traced the contours of her neck, down her collarbone, and to the valley of her chests. "You have no idea what I have in store for you, Elsa."

Her lips ghosted over her sister's, urging her majesty to raise her head to actually meet them. Anna smiled into the kiss, feeling her sister's desperation. The Queen begging needily for more. Hungry for more. Her back arched, yearning more of her touch, the clanging of the cuffs echoed in the princess' head, causing her to look up.

"Anna, Ah-Anna-"

"Nice handcuffs, Elsa." She said while sitting up. Her eyes fixated on said item, leaning forward, over her sister to touch it, hissing at the unexpected cold. "Ice too?"

"Yeah, I checked a guard and his cuffs were a little rusty. I thought you'd prefer something more… elegant?"

A smile grazed her lips "I love it." And then it widened with mischief.

Somehow, it seemed as if Elsa could feel the change in her sister resulting in a cold rush down her spine. "Ah-anna? Mmph!" Silenced with a hard kiss, the queen returned to bucking against her straddling sister.

The sudden sound quickly turned into sensual moans. Fingers started to dance as their tongues danced. She felt Elsa's chest raise, pressing harder against her palms, encouraging them to increase in volumes, drowning the princess' beating heart.

When Elsa turned her head away, breaking the kiss, A gentle yet firm palm pressed against her cheeks, pulling her back in. The queen whined into it, her eyes squinted hard as she struggled to pull away.

"Elsa? Elsa! Are you okay?"

"Y- yea," her sister replied. "It's just-"

"It's just what?"

"Anna, I dont run around the castle like you do, I need to breathe.".

Oh.

"Oh…" Her voice echoed her thoughts, which was pretty much empty, really. "W-well it's not my fault you don't exercise enough!"

"Sex," she breathed again, "sex is exercise, your highness."

"Don't get cheeky with me, prisoner, I'm the one in charge here."

"Oh- ooohmmn," Her reply was cut short. Her breathing quickened as Anna showered light yet heated kisses down her jawline to her neck and it hitched when she felt teeth sinking onto her skin. "Anna!"

The princess' head shot up immediately, "W-what is it?!"

"N-n-no, it's nothing, it just felt…" Her sister turned her head to the side, "good."

"Okay, we're going to have to decide on a word here where we use so that we know when I've- no if I hurt you."

"Anna, bondage, sadism and masochism is when someone likes to hurt and get hurt." Elsa rolled her eyes and deadpanned.

"Right, right, right, but wait- no! I'm just so scared if- no, what if, no, Elsa…" Her retort turned into a whine.

"Okay, I'll say…" Her eyebrows furrowed, deep in thought. "I'll say… grapes."

Anna made a look that said, 'really?' "Grapes?"

"Yeah, grapes." Upon the queen's proud smile, the princess resigned with a sigh realising her sister probably didn't see the face.

Of course she didn't see, she's blindfolded, dimwit. She palmed her forehead and returned to her sister, "Alright, grapes. And if I'm not harsh enough or anything, if you like it, just… um…"

"Anna, just go. All out. I'm your christmas present." Anna pursed her lips, unsure whether she was sure she wanted to. "No, wait, the cuffs are. I'm… I've been yours long before this."

Fuck, she could not get any sweeter. The heat in her cheeks magnified and Anna had to hide her face behind her hands even though she knew her sister couldn't see her. "Elsa…"

"Yes, your highness?"

Oh right. Back to sex. Sex sex sex sex.

"No flirting with your guards." She said before returning to showering kisses, occasionally nipping onto the creamy white skin.

Drinking in the moans, she took them as signs that she could do more, with a hand, Anna pushed a thigh, spreading her center. The musky scent of arousal that filled her nose made her throat dry. Without even a warning or inching her way down, she thrusted a finger in.

"So wet, Elsa..."

"Mmn- Anna-"

"W-what!?" She quickly pulled her finger out before being struck with realisation. "Oh. Right, grapes, right. Sorry…" She murmured apologetically. Her fingers returned to her sister's wet core, stroking it gently as her mouth latched onto a nipple.

"You know, mmn, Anna."

"Hmm?"

"It feels like I'm more the one- mmn, in charge than you are…"

A tinge of anger tugged at the back of her mind. Offended, she sucked harder and replied, "Oh yeah?" and pushed her finger deeper. Knuckle deep, she thumbed the nub right above her sister's entrance. "How's that for being in charge?" But all she got in return was a whimper and a bucking hip.

"Anna, Anna… I'm- I'm going to-"

"Go ahead, Elsa," she kissed down her sisters slim tummy, lapping onto the beads of perspiration.

"Anna- Anna! Mmn- kiss me, please."

Anna did not need to be told twice, "O-oh, oh, okay." She replied awkwardly before letting their lips meet. Her grip on her sister's side tightened. She felt her sister's taut stomach against hers as Elsa's back arched towards her during she climax before resting against her bed again.

Anna watched as her sister's chest rise and fall again, blue eyes shut, signs of fatigue all over her face.

God, she was beautiful.

"Well that was fast." She said dumbly after a minute of silence.

"I… I hope you liked it."

"I hope you liked it, pretty sure youre the one who felt good here."

Elsa snorted, "Please, you wanted this. Untie me, I'll…" She spoke as she struggled to sit up to only be pushed back down and embraced in a tight warm hug.

"No, it's okay, thank you, Elsa. We can do more of this another time, I love you." Anna said as she nuzzled her sister's neck. Elsa bent down and gave her sister a peck on her strawberry blonde hair and smiled.

"I love you too, Anna. Merry Christmas."

"Merry-yawn-Christmas to you too, Elsa, goodni-"

"Waaaaaait!"

Anna jumped up from her all-too-comfortable position like a reindeer caught in bright lights. "What what what!?"

"Nothing, I just- my blindfolds please and-tsk," Elsa shook her head, "Anna, my- wait. Oh okay, it is nothing. I forgot my cuffs are made of ice I can control them at will."

"Oh- oh oh, right, I'm so sorry, Elsa!" The princess hastily sat up, all the sleep in her eyes immediately gone, and quickly untied the blindfolds. "I'm so so sorry, Elsa. Oh dear, gosh."

"Anna…"

"I'm so sorry Elsa, I'm so sorry this is our first time and oh dear, I'll make sure I won't forget next time."

"Anna, it's okay, like you said, it's our first time." She cooed, stroking her sister's head, "and I enjoyed it, thank you. Now good night, merry christmas, sweetheart."

A/N: I know there was technically no "No Peeking", but... you get the blindfold, right guys?