NTR: Stealing wives in Another World
Chapter 131: Mermaid anatomy (18+)

Chapter 131: Mermaid anatomy (18+)

The ocean around them glowed faintly with drifting plankton light, casting shimmering patterns across Lunari’s silver-blue scales as she swam ahead of Allen. Her hips moved with slow, hypnotic grace, tail flicking behind her like she was painting ripples on the sea.

Allen, meanwhile, was drifting several feet behind her, trying very hard not to get distracted by how absurdly sexy a fish woman was.

He failed.

Again.

Because questions were boiling in his brain. Perverted ones. Complicated ones. Curiosity was a drug, and Lunari was the damn supplier.

"Hey, Lunari?" he called out, swimming closer beside her. "Can I ask you something kinda weird?"

She turned her head slightly, soft coral-pink hair floating like ribbons in the current. "You may."

"It’s about... mating."

Her eyes widened just a little, but she nodded.

"Okay, so..." he scratched his neck, awkwardly paddling with one hand. "I get that you have the upper body of a woman. Boobs, waist, all that. But below the waist, it’s all tail, right?"

She nodded. "Yes."

"So then... how do you mate with a merman? Like, where’s the equipment?"

Lunari blinked slowly. "Equipment?"

"You know—your bits. Your... opening."

She blushed faintly, but tilted her head. "Ah. The joining place."

"That’s what it’s called?"

"It is how the Priestesses describe it. A sacred place, hidden beneath the scales."

Allen’s brow furrowed. "But wait—you’ve never... y’know... done it with a merman?"

"No. I have not seen a merman since I was young. Most were captured long ago."

Allen winced. "Right. That’s awful."

"I only saw yours," she said matter-of-factly, "when you saved us from the demon camp."

He nearly choked. "Oh. So you noticed that, huh?"

Lunari looked away shyly. "It was... large."

He coughed. "Anyway. You have one? A, uh... joining place?"

She nodded again, calmly. "Yes. I have touched it myself. When it ached. But I have never seen another’s... equipment."

Allen’s nose flared. His thoughts derailed hard.

"And," she added, "I do not understand your other question. What is... bits?"

"It means genitals," he muttered, flustered. "Sex organs."

"I see. You use strange words."

"You have no idea."

They swam in silence for a beat. Allen glanced at her again—her smooth, glimmering scales, the graceful sway of her hips, the curious way she kept looking at him like she wanted him to keep asking.

He hesitated. Then, before his horny brain could think twice:

"Can I see it?"

Lunari stopped swimming and hovered, motionless. Bubbles rose between them.

"You wish to look at my joining place?"

"For science," he said quickly.

She nodded. "If it helps you understand."

Allen floated closer, heart pounding.

Lunari’s fingers slid down her scaled torso. Just below the curve of her belly, hidden beneath an overlapping pattern of gleaming plates, she pressed inward—and a seam parted.

Allen forgot how to breathe.

Nestled between the protective layers of her tail was a soft, pink slit. Completely human-looking. Slick, delicate, and gorgeous. Not some alien fish thing—this was a full, perfect pussy hidden in a mermaid’s lower half.

His cock throbbed like it had a mind of its own.

"I-is it okay if I touch?" he asked, voice tight.

Lunari gave the smallest nod. "I do not know what will happen. But I wish to feel more."

Allen reached out, trembling slightly. His finger touched her folds—warm. Not cold like the sea. Velvety, tight, and impossibly inviting.

Lunari moaned.

It was soft at first—just a breathy ahh—but when his finger slipped inside, the sound deepened. Her body jerked in the water, tail twitching, lips parting in a shocked gasp.

"Does it hurt?" he whispered.

"No," she breathed, voice shaking. "It... pulls at me. I did not know it could feel like this."

Allen’s finger curled inside her, and Lunari’s eyes fluttered shut.

She arched, swimming in place, letting the current roll her hips into his hand. He was fingering her now, underwater, in the middle of the sea, and she was whimpering into the water like she’d been waiting her whole life for this.

Her scales trembled around his wrist.

Her pussy clenched on his finger—wet and twitchy and clinging like it didn’t want to let go.

"I’ve never been touched," she whispered. "Only I did it... but it didn’t feel like this. Never like this..."

"Yeah, well," Allen said, breathing hard, "you’ve never had me do it."

She moaned again, higher this time, shivering all over.

He added a second finger. She gasped, grabbing onto his shoulder, holding herself steady. Her body rolled against his hand with gentle, instinctual thrusts.

Allen felt his pants getting impossibly tighter.

The ocean around them seemed to dim, like everything was holding its breath, waiting for what would come next. Her voice spilled out in moans and panting whimpers, eyes half-lidded, mouth open like she was drowning in pleasure.

"I want... more," she murmured, pressing herself against his hand.

"Careful," Allen warned her. "If I take it out now, this whole ocean’s getting painted."

"I do not know what that means," she moaned, "but I think I want it."

Allen was losing control. He kissed her throat, her shoulder, fingers still plunging gently inside her, feeling her walls spasm around him.

And then—Lunari gasped.

"I feel... something building—!"

Her whole body tensed.

She arched back, moaning into the sea, pussy fluttering wildly around his fingers.

Her orgasm rolled through her like a wave, hips bucking, tail flapping, head thrown back in utter disbelief. It was raw, explosive, the kind of climax that cracked something wide open in her.

"I... I did not know," she whispered, shaking. "That it could feel like that. That I could be... filled..."

Allen grinned. "Oh sweetheart. You’re just getting started."

Lunari clung to him, still quivering, her forehead pressed to his shoulder as her body floated slack in the current. The ocean rocked around them, her silver-blue tail curling softly like it had lost all tension. Her pussy still pulsed faintly on Allen’s fingers, the aftershocks of her climax rolling through her like warm waves.

She lifted her head, eyes hazy, lips parted with a dazed little smile.

"I didn’t know..." she whispered, voice hoarse. "I didn’t know I could shake like that..."

Allen grinned, cock twitching hard beneath his soaked pants. "That was just my fingers, sweetheart. You haven’t seen what I can do with the main event."

She blinked. "Main... event?"

He didn’t answer. He didn’t need to.

Instead, with one slow, deliberate motion, Allen reached down—unzipped—and unleashed it.

Thunk.

His cock slapped against his stomach, long, heavy, throbbing. Thick veins snaked along the shaft, flushed dark and twitching like it was already reaching for her.

Lunari gasped.

Her eyes locked onto it with stunned awe, her mouth falling open like she’d just seen a sea god. She drifted backward a little, tail twitching reflexively, then floated forward again like she was drawn in by gravity.

"That’s... that’s not like anything I’ve ever..." Her voice trailed off into a breathless whimper. "It looks angry."

Allen chuckled. "It’s not angry, babe. It’s starving."

He wrapped a hand around the base and stroked it once, slow and slick, precum already leaking like syrup from the tip, thick globs swirling in the water.

Lunari stared, mesmerized, her cheeks flushed darker with every second. "It leaks..."

"Yeah," Allen said, voice husky. "And I’ve got gallons saved up for you."

She shivered.

"I touched myself before," she murmured, "but... I didn’t know this is what it looked like. It’s so... big. And veiny. And warm. Is it supposed to twitch like that?"

Allen stepped forward in the water, bringing it closer to her face.

"Touch it and find out."

She hesitated only a second—then reached up with both hands, fingers gliding over the slick, veiny shaft. The second she made contact, Allen groaned low, head tilting back.

Lunari gasped. "It’s hot..."

She stroked upward curiously, then wrapped her fingers around the girth. They didn’t even touch—he was too thick.

Allen groaned again as she started to explore, stroking with slow, untrained pumps. "Gods, you’re a natural."

"I want to taste it..." she whispered, her voice shaking like she didn’t fully understand the words coming out of her mouth.

"Then taste it," he growled. "Lick the tip. Just a little."

Lunari floated forward, eyes wide, and pressed her lips against the crown. Her tongue flicked out, tasting the pre. Her eyes fluttered.

"It’s... salty."

Allen chuckled. "You haven’t even gotten to the good stuff yet."

She licked again, longer, her soft lips smearing slickness across the swollen head. Her tongue curled around the underside, tracing the ridge, tasting every inch. And then she moaned—softly. Like the flavor alone was making her body heat up again.

Allen groaned. "Keep going, Lunari... Get it nice and wet..."

She did. Oh, she did.

Her tongue grew braver, wetter, bolder. Soon she was dragging it up and down the full length, jerking him off with one hand while suckling softly at the tip. Her tail twitched uncontrollably behind her, hips rocking without realizing it, her thighs clenching like her pussy was begging for more fingers—or something way thicker.

"I want it," she whimpered, lips shining with spit and precum. "I want it inside... but I don’t know how..."

Allen cupped her chin. "I’ll show you. But you gotta open up that sweet little slit again for me."

Lunari obeyed instantly.

She leaned back in the water, parting her shimmering scales, and revealed that soft, flushed pink opening again—already wet, glistening, twitching around nothing. The ocean seemed to heat up between them.

Allen grabbed her hips, guiding the tip of his cock between her folds.

The moment it touched her entrance, she yelped.

"Too big!" she gasped. "I can’t—I’ll split—"

"You’ll stretch," Allen growled. "You’re already soaking. Look at this greedy little pussy sucking on my head..."

He pushed in—just an inch.

Lunari cried out, voice muffled by water, her body locking up.

But then... she moaned. Long and low. Her tail wrapped around his thigh.

"More..."

Allen pushed deeper.

Her cunt clung to him like a velvet vice, impossibly tight, pulsing around him like her body couldn’t decide if it was terrified or addicted. He bottomed out halfway, gritting his teeth.

"F-fuck, you’re tight... You’ve never been filled before?"

She shook her head frantically. "Never. Gods above—Allen—I feel so full!"

Allen started to move.

Slow thrusts at first—wet shlicks that echoed through the ocean like music. Her pussy gurgled around his cock, bubbles rising as she writhed in his arms. Her nails dug into his back, tail lashing like she was in heat, eyes rolled back in bliss.

"More," she whimpered. "Faster—I want to drown in it—!"

And Allen gave it to her.

His hips slammed forward, making her cry out again and again, the water between them sloshing with every deep, hard pump. The pressure, the heat, the slick squelches as her tight cunt gripped every inch of his cock—relentless.

"You hear that?" he growled into her ear. "That’s your pretty little pussy talking."

SCHLUP

SCHLURK

SPLUTCH SPLUTCH SPLUTCH—

Lunari was losing her mind.

"I feel it... again—" she whimpered. "That wave—! I’m going to—!"

She shattered.

Her whole body convulsed, pussy clamping down like a vice, milking him hard. Her screams came out as bubbly, wet gasps, her orgasm flooding around his cock in hot, frothy pulses.

Allen snarled. "You ready for my wave?"

"No—inside—don’t cum inside—!"

"Too late."

He slammed in balls deep and unloaded.

His cock throbbed violently, pulsing again and again as thick jets of cum poured into her tight, trembling cunt. It spilled out around him in creamy streams, swirling into the water like clouds of heat.

Lunari moaned louder than ever.

She could feel it—all of it—filling her, stretching her, warming her insides with a flood of seed so thick it clung to her thighs. She collapsed against him, twitching, shuddering, utterly wrecked.

Allen just grinned, breathing hard, cock still twitching inside her.

"Welcome to the surface world," he panted. "Lesson one: you’re mine now."