Mermaid!Au because it's Klaroline week and I can. This is mainly the result of binge watching season three of Once Upon A Time along with The Little Mermaid. Oops.

Actually kind of proud I thought of this idea without a prompt, not going to lie. I hope you all enjoy it!:)

- Shauna! xo

It's February when the noise floats down to him. Always February. And each year, he follows it. To find the magnificent creature behind the song to know avail. It was like trying to find the end of a rainbow.

Her melodic, beautiful voice floats through the air, travelling through all the waves of the ocean and following through realms, through centuries.

This year, however, he is more than determined to find it.

Klaus' tail flops determinedly in the water, his mind focussed on that one, perfect voice. All of his senses drawing him to the unfamiliar creature.

He's startled when he feels cool air rushing over his pale skin, the breeze ruffling his damp hair in the dark night and it isn't long before he realises that he's broke through the water's surface. The music is suddenly calling to him and he's a flash through the surface when he realises he's come to a large ship, his tail trailing over the hard edge of it.

And that's when he sees her.

She's a goddess with long, blonde hair, curls arranged in a dismay and her red, ruby lips are pushed tightly together as she sings the harmonious melody, tongue curling around the vocals carelessly. She has two very long legs covered by flawless skin that her tight, short skirt is emphasising perfectly (Klaus still isn't over the invention of those things, they looked reckless and dangerous).

He's immediately taken by her, eyes dilated as they stare at her lips moving so sinfully with her chest heaving with every breath she takes.

"Hello, there."

It takes him a moment to realise that the beautiful voice is speaking to him.

He startles, licking his lips lightly, "Hello."

Her smile is forgiving and soft as she stares down at him, hand propping her head up on the railway as she stares on in fascination.

"And what's your name, mermaid?"

He snorts at the label.

"Merman," he corrects with irritation twinging his tone.

She smirks but doesn't acknowledge his correction.

"Your name?" she coughs.

"Niklaus."

Her lips form a swollen 'o' as she gasps and she takes a step back, her dynamic features flooding with alertness.

"You're the-"

"Hybrid? The one who abandoned his coven? Yes," he snaps, answering all the questions he can see she's dying to ask.

An emotion he identifies as shock crosses her face before she's smiling slyly at him, her eyes beaming down at him.

"Why don't you come up deck?" she asks innocently with her eyes so wide and open.

He wants nothing more to take her up on that offer. She really had no idea.

"I can't," he grits out.

"Why not?" her voice confrontational as she demands an answer. "It's the one day of the year you actually can. Why not take advantage of it."

He swipes his eyes over her flawless skin, pausing on her long legs once more to her dark lips which are pulling up into a smug smirk stretched out. He should have known his answer from the begginning.

"First things first," he says firmly. "What's your name?"

Her smirk falters slightly before shaking her head and deciding to give him a straightforward answer, "Caroline.

"Caroline," the syllables of her name curl around his lips as he breathes out her name.

When he glances to her, she's got one hand propped up on her hand and she's raised a perfect eyebrow as her blue eyes peer curiously down at him, "So?"

"Give me five minutes," he throws stiffly over his shoulder as he splashes into the pits of the ocean once more.

(He can't see her resulting smirk.)

XXX

"Took you long enough," she tells him.

As he walks along the deck, hand griping the railing tightly as he slowly moves his feet to be careful not to trip over (and remind him, how do humans walk with these things again?), he shoots her a brief glare, "Apologies, princess."

Now, she's the one glaring at him, "Don't call me that."

"Why not? It's who you are, isn't it?" he shoots back.

She wasn't the only one who knew exactly what buttons to press to irritate somebody.

"No, it's not," she says firmly. "Not anymore."

"You can't exactly just stop being who you are," he muses, mostly to himself.

"Well I'm not that naive little Caroline anymore," she snaps back at him.

"Clearly," he smirks. "Now, you're just a brave little pirate."

She's still glaring as she circles around him like a predator stalking their prey but suddenly she has a wicked smirk covering her face and her hand is trailing down his arm softly, her fingers entangling with his as she pulls him along.

"Come on," she pleads.

(And in all honesty, was him not following her ever in the cards?)

XXX

"I've only met a handful of mermaid's before," she muses as he almost collapses on her bed (she insists that's what it's called), exhausted from the use of his new legs.

He growls, "Merman, love. We've been over this."

"And I really don't care," she snorts.

"I could go back to calling you princess..."

"Fine then, merman," she emphasises.

"Thank you," he murmurs.

"You say you abandoned your coven, family... whatever they are," she waves her hands in the air dramatically to emphasise her point as she stares pointedly at him, eyes narrowing in on him slightly.

"Do you have a point?" he grits his teeth at the reminder.

She shrugs, dancing closer to him as she peeks up at him from beneath her lashes seductively, "I could do with someone like that on my side right now."

"Like what?" he breathes as she closes in on him, pausing to drop to her knees at the edge of the bed and crawling in between his with her bottom lip caught between her teeth.

"Ruthless," she whispers into his ear, lips brushing up against him as her tongue peeks out to lick his earlobe. "Willing to do whatever it takes."

When she pulls back, her eyes are so dilated and darkened that he can barely see the blues in them anymore (and god, were they are a beautiful shade of blue). She licks her lip, bottom lip moving slowly as she gazes right into him, eyes never faltering from his.

"Is that so?" he whispers as she inches even closer to him, eyes darting down to his lips before settling back up on his eyes.

"Mm."

He doesn't have time to hesitate (not that he wants to) before her lips are on his, moving slowly against him as she lets out a sigh. He feels clumsy against her as her lips move seductively against him with practised perfection (and the thought makes him growl against her). She clearly likes the sound because suddenly she's straddling his lap and her hands are wrapped tightly around his neck, yanking on his hair to push his head to the side slightly to get a better angle. She must have found it because she's moaning against him, teeth nibbling into his bottom lip softly which she soothes over immediately afterwards with a few strokes of her tongue.

He's barely figured out how this kissing has worked before she's pressing one last peck to his lips and pulling away with a breathless smile covering her face.

"You're good at that," she murmurs.

"Beginner's luck," he mumbles right back.

She smirked, "That I believe."

He smiles right back, hands moving unsurely over her back to rest on her hips. There's a wider smirk suddenly on her face so he assumes she finds his discomfort amusing.

"We'll get to that later," she promises.

"But?"

She shoots him a slightly irritated look, "Right after you agree to help me."

"I thought that went without saying," he murmurs.

"Is that a yes?" she raises an eyebrow.

"Mm, definitely," he's still panting against her after the onslaught of her determined kisses.

"Good."

And then she's shuffling forward on his lap, creating a delicious friction that has him instinctively bucking up against her much to Caroline's delight if the high pitched moan she lets out against his lips is any indication. She doesn't stop, hand moving slowly down his chest and pausing at the apex of his thighs and her fingers are suddenly curling around something hard between them.

He lets out a loud gasp against her and she smirks, immediately taking advantage as she slips her tongue slyly into his mouth. It takes him a few clumsy attempts but the process of kissing suddenly comes to him and then he's groaning into her mouth as her hips move sinfully against him. Their tongues are tangling around each other's before she abruptly pulls away with a smirk on her face.

"Don't worry," she tells him as she shuffles back to her previous position to kneel between his thighs. "I'll teach you everything you need to know."

Not two seconds later after his pants are pulled down is her tongue on him, twirling and swirling around the tip of him while her hand moves languidly over him. When she peers up at him from beneath her lashes, he's rigid and is staring down at her in disbelief and confusion as though he doesn't know what's happening.

"You feel that heat?" she tells him as her mouth pulls away, hand still moving slowly over him.

He nods eagerly, eyes looking down to where she's stroking him eagerly.

"Chase it down until it's gone," she breathes against his ear as she begins laying kisses all along his neck.

He groans as her teeth close in around his sensitive flesh, tongue soothing over the biting mark before one hand is suddenly tearing his shirt to pieces and leaving it scattered all over the floor. He can't complain, though, because she's suddenly trailing kisses down his abdomen and chest slowly and then her mouth is back on him.

His head tips backward as she moves over him, lips tight around him and fuck, did he just the back of her throat?

She doesn't seem to care, though, because she's humming and clearly enjoying herself and her hand disappears to fondle his balls roughly.

"Come on, Klaus," she whispers against his thigh as she briefly pulls away. "Come for me."

It doesn't take much after that before a warm liquid is escaping him and shooting down Caroline's throat, her swallowing every essence of it with a proud smirk donning her features.

When he finally comes back too, Caroline is seated in his lap once more and is looking at him saucily.

"What... was that?" he gasps as his breathing finally returns to normal (ish).

"That," she emphasises with a hand running softly down his now bare chest, "was your first orgasm of many."

"Orgasm?" he asks, forehead wrinkling as he looks at her in confusion.

She's not looking at his eyes though as she's suddenly laying him down on the bed and she's covering his body with hers.

"Don't worry," she insists. "By the time I'm through with you, you'll be an expert at them."

(He decides to take her word for it because she's suddenly kissing him as he's the only thing that matters on this planet.)

(And later, if she asks him where he got the clothes from as they snuggle tightly together, he merely laughs and insists a bystander was nice enough to loan them. She merely laughs as she brings him down for another forceful kiss and pulls the covers over their heads.)