Days blurred into this sweet, torturous rhythm after that first wild morning. Tae picked up on everything with Haneul like she’d been born to it—hell, maybe she had, with that nurturing soul of hers. She’d wake before dawn sometimes, cooing to him through the baby monitor, changing his diapers with these gentle hands, feeding him bottles while rocking in the nursery chair, singing soft sea shanties that lulled him right back to sleep. “My sweet boy,” she’d whisper, pressing kisses to his chubby forehead. “Mama’s little prince, aren’t you? So squishy and perfect.” Kook heard it all from his room or the hallway, never saying a word, but it hit him deep—stirring something possessive, warm, and yeah, filthy. She treated that baby like her own, and fuck, it made him imagine things he shouldn’t.

He showed her human foods bit by bit, starting simple in the kitchen—fruits first, slicing apples and bananas, watching her eyes light up at the crunch. “Try this, Tae—sweet, like coral berries but juicier.” She’d bite in, juice dripping down her chin, moaning softly. “Mmm, Kook, it’s so good! Sticky and fresh.” Then breads, pastas, even ice cream one night—her licking the spoon slow, tongue flicking out, driving him nuts without knowing. But her outfits? God, those tiny scraps she picked. Crop tops that rode up, showing underboob every time she bent to pick up a toy. Shorts so short her ass cheeks peeked out, thongs visible when she stretched. She’d flash him constantly—bending to grab Haneul’s rattle, tits spilling over her top; reaching for a high shelf, ass jiggling, pussy outline clear through the fabric. Kook worked from home most days since the baby came—only dipping into the office for big meetings, suit on, but back by lunch. It meant he saw it all, cock half-hard constantly, jerking off in the shower to thoughts of her more than once.

One afternoon, he walked into the nursery and froze. Haneul was fussing, rooting around Tae’s chest like he did sometimes, little mouth latching onto her nipple through her thin bra—sucking hard, thinking milk was there. Tae’s eyes welled up, tears spilling as she held him close. “Oh, my baby… I’m sorry, I don’t have milk for you. Mama wishes she did.” She sniffled, rocking him, but the sight—her fat tit out now, nipple wet from his tiny sucks—drove Kook insane. His cock throbbed, imagining his own mouth there, but he backed out quiet, heart aching for her sadness, body burning with want. She loved that kid so much, calling him “my sweet boy,” “mama’s prince,” like it was natural. Kook never corrected her—hell, it turned him on, this fantasy family bubbling under the surface. But his frustration built, blue balls every night, Sana cold as ice in their bed, out more than in. He needed release, bad.

Then came Sunday—staff off for the holiday, Sana gone to some spa weekend with her bitchy friends, not even kissing Haneul goodbye. Kook holed up in his home office, crunching numbers, but his mind wandered to Tae. Haneul napped after lunch, the house quiet. He stepped out, stretching, calling softly, “Tae? Where you at?” No answer. Checked the kitchen, living room—nothing. Then out the glass doors to the pool deck, and there she was. Swimming naked in the infinity pool, all happy and free, body gliding through the water like she was back home. Her massive tits floated, ass breaking the surface as she dove, that pink pussy flashing in the ripples. Sunlight danced on her wet skin, hair fanned out like a mermaid’s—wait, fuck, what if her tail came back?

He gasped, stiffening—cock hard in seconds, but anger hit first, possessive rage boiling. “Tae!” he barked, storming closer, fists clenched. “What the hell are you doing? Naked? Out here where anyone could see?”

She surfaced, gasping, eyes wide in shock. “K-Kook? I… I just wanted to swim. It feels like home.” But his tone scared her, and she started crying—cute whimpers, tears mixing with pool water, shoulders shaking. “I’m sorry… I miss the sea so much. The water calls to me. What if my friends think I’m gone forever? What if I can’t go back?” She hugged herself, tits squishing, looking so small and lost.

Guilt punched him hard. “Shit, Tae… baby, I’m sorry.” He stripped fast—shirt yanked off, pants down, cock springing free already half-hard. Slid into the pool, pulling her close, naked bodies pressing. “Didn’t mean to yell. Just… scared for you. What if someone saw? Or your tail popped out? I don’t want you hurt.”

She sniffled, but forgave quick, arms around his neck. “It’s okay, Kook. You’re protecting me. I like that.” They swam together, slow laps, her giggling as she splashed him lightly. “The water’s warm here—not like the deep cold. But with you… it’s better.”

He chuckled, tension easing, but his cock brushed her thigh, stirring. “Yeah? Show me how mermaids swim.” She twisted, playful, bodies gliding close—skin on skin, wet and slick.

After a bit, she wrapped her legs around his waist suddenly, laughing. “Catch me!” Her pussy pressed right against his abs, tits to his chest.

Kook groaned, hands on her ass instinctively. “Tae… fuck.” That was it—he’d had enough. Crashed his lips to hers, deep and hungry, tongue diving in.

She gasped into the kiss, stiffening for a second, then melting, kissing back clumsy but eager. “Mmm… Kook… feels… good. Tingles everywhere.”

He squeezed her fat ass hard, pulling her tighter. “God, baby, you’ve been driving me crazy. Those tiny clothes, flashing that ass and tits all day. Want you so bad.”

She moaned, grinding instinctively, her puffy pussy lips parting over his thick cock—trapped between them now, sliding up and down as she moved. “K-Kook… what’s happening? Your cock… it’s so hard against me. Feels hot.”

“Yeah? Grind on it, Tae. Like that—fuck, your pussy’s so fat and wet. Been jerking off thinking about this pink cunt every night.” He thrust up, cock grinding filthy against her folds, water splashing around them.

She whimpered, legs tightening, hips rocking faster. “Ah! It… it rubs my spot. The tingly one. Kook, more… talk more. Your voice makes me… wetter.”

He growled, one hand leaving her ass to squeeze a tit, pinching the nipple. “Dirty girl. Calling yourself mama to my son, huh? Makes me wanna breed you for real—fill this pussy with my cum, give you a baby of your own. You’d like that, wouldn’t you? My little mermaid slut, tits leaking milk for our kids.”

Tae moaned loud, grinding harder, her clit catching on his cockhead each time. “Yes… oh god, Kook. Want to be mama for real. Your cock… it’s so thick. Splitting my lips—feels like it’s gonna go in.”

“Not yet, baby. Gonna make you cum like this first. Grind that fat pussy on daddy’s dick. Look at you—tits bouncing, ass in my hands. You’re mine now, Tae. No going back to the sea without my cum dripping out of you.”

She cried out, head thrown back, water beading on her skin. “Yours… ah! Kook, it’s building… hot inside. Squeeze harder—my ass, my boobs. Please!”

He obliged, kneading her ass cheeks rough, spreading them in the water, fingers teasing her hole. Other hand mauled her tit, twisting the nipple. “That’s it, slut. Cum for me. Soak my cock with that mermaid juice. Imagine Sana walking in—seeing you humping her husband like a whore. She’d hate it, but you’d love it, huh? My dirty secret.”

“Kook! Yes… imagining… oh fuck, it’s coming!” She shattered, body convulsing, pussy clenching around nothing but grinding wild on his shaft, juices mixing with the pool water.

He thrust harder, chasing it—cock sliding through her slick folds, balls tightening. “Fuck, Tae—gonna cum. Your pussy’s gripping me so good. Take it, baby—”

They both came hard, his ropes shooting into the water between them, her screams echoing off the glass walls. Panting, holding each other, kisses turning soft.

“Wow… Kook,” she whispered, eyes dazed. “That was… human magic?”

He chuckled, nuzzling her neck. “Something like that, baby. Just the start.”