warnings: idol!heeseung x fem!reader x idol!ni-ki, 4,5k, p*rn with little plot, threesome, dacryphillia, mating press, unprotected s*x — pulling out method (just use protection), multiple orgasms, p in v, oral (f. rec), fingering, handjob, squirting. reader is older than ni-ki, younger than heeseung, and a virgin (don’t hit me i love corruption kink)
summary: heeseung and ni-ki pulls a prank on you, pretending to fight. but the fight is too believable, that gets you upset with them. you leave, and they visit you for your forgiveness. they weren’t planning on pursuing you like this, they were just going to comfort you, apologize to you. but one moment they’re kissing you, and the next you’re on your bed with them taking turns on pleasuring you.
The dorm had been peaceful. You were curled on the couch, scrolling through your phone, while Ni-ki and Heeseung buzzed around the kitchen.
It started small. Ni-ki was reorganizing the fridge, a task he took with bizarre seriousness.
“Hyung, I told you not to leave my sunglasses on the table like this.” Ni-ki sighed. Heeseung was on his way to the open living room, his oversized shirt swallowing him whole as the youngest one complained about a rather small problem. “You always do this.”
“Won’t do it again.” Heeseung mumbled, he kept his eyes on the phone and reached for the remote on the couch, next to you.
“Maybe keep your promises next time.” Ni-ki’s voice had an edge you rarely heard—petulant and sharp. Heeseung turned around quickly, you could see Heeseung’s back, and barely see Ni-ki as the older one’s figure swallowed him whole. You cocked your head to the side to see Ni-ki, it was as if he was not looking at Heeseung in the eye, but his ear or somewhere closer. It was weird.
You had been casually scrolling in the dorm, glancing at Ni-ki tidying up the area, while Heeseung sat on the floor and played some war games. Then Ni-ki had begun sighing loudly as he moved stuff around, they were the only ones in the dorm who were assigned cleaning up the place, but Heeseung was not helping the younger one.
“What did you say?” Heeseung said, one eyebrow raised with a smirk on his lips. He left his phone on the counter. You watched them, how Heeseung was clearly challenging Ni-ki, and how Ni-ki was looking ready to speak his mind without holding back. It was like a spark on a gas trail.
“I said, keep your promises next time.” Ni-ki slammed the fridge door shut, the sound making you jump.
“You think you’re better than everyone, right Ni-ki?” Heeseung's smirk on his face got wicked, and you couldn’t help your eyes widen at his words. The usual playful glint was gone, replaced by a genuine irritation.
“What’s that supposed to mean?” Ni-ki furrowed his brows, straightening his posture to stand tall against the older one.
Your phone felt heavy in your hands. This wasn't their usual bickering. The tone was different—meaner.
You:
jake, riki and heeseung are fighting
Jake:
lol again? abt what this time? who left the towel on the floor?
You:
no, it’s serious. they’re yelling. can you come back?
Jake:
they’ll be fine in 5 mins. don’t worry ^^
You looked up from your phone, your heart starting to thud a little faster. The argument had moved from the fridge to personal jabs.
“You think you can walk around and tell everyone what to do: “Don’t put my sunglasses on the table”, “You’re doing this move wrong, and I’m the only one who’s correct.” It gets to a point, Ni-ki.” Heeseung explained, his words a harsh attack on Ni-ki’s heart.
“You don’t get to talk to me that way.” Ni-ki gritted his teeth and you looked at his clenched fist.
“You’re just pissed because you’re obsessed with control since you can’t control your own—” Heeseung started, but Ni-ki cut him off.
“Don’t you dare finish that sentence,” Ni-ki snarled, stepping into Heeseung’s space.
“Or what? You’ll put me back in my place?”
They didn’t look fine, Jake was wrong. Because now Heeseung was getting closer to Ni-ki, with a scoff that probably got on Ni-ki’s nerves more than it should.
They were both tall, Ni-ki on the taller side, and now they were almost nose to nose, you could feel the danger of the moment, how it could all go wrong. You were ready to get up and intervene, but what could you possibly do to prevent them fighting? They could even hit you in the heat of the moment. Your throat closed up, you wanted to say something, Please don’t,” or anything, but nothing came out.
And that was when Heeseung took Ni-ki’s sunglasses on the table and threw it across the floor. You flinched, and saw how Ni-ki’s face changed entirely.
Everything was a mess after that. They were already so close together that when Ni-ki pushed at Heeseung’s chest he stumbled backwards, and Heeseung shoved him back hard enough to make Ni-ki almost trip and fall.
That was the point of no return. You stood up at the same time as Ni-ki, as you saw the rage and the way his hands formed a fist that was about to blow up Heeseung’s face, your phone clattering to the floor. “Ni-ki!”
You yelled as you ran up at him, trying to keep him away from the older one. They ignored you, a vortex of their own anger. And Ni-ki was stronger, he easily grabbed Heeseung’s collar and with a guttural sound, he used his whole body to slam Heeseung down onto the island. The older one grunted in pain and surprise, pinned on his back. And you were holding onto his wrists, the fear so evident on you that even Heeseung’s scoff wiped off his face.
“Stop, Ni-ki… What are you doing?” you whined, your voice trembling. You couldn’t even yell at them, your panic response to physical violence. Heeseung was basically lying on top of the kitchen island and Ni-ki was on top of him. With you, still attached to his wrists like a spiked wire, your nails digging into his skin. You pulled his arms back and Heeseung’s collar followed, the younger one’s eyes locked onto the older one’s face. Ni-ki released one hand, the one that was away from you, and you thought it was over. But his fist was clenched, pulled back, his face a mask of pure, unadulterated rage you had never seen before. It was poised to slam directly into Heeseung’s face. The image was so violent, so shocking, that a sound tore from your throat you didn’t recognize—a raw, piercing scream of pure terror. “RIKI, NO!”
The scream sliced through the rage-filled air. Everything froze. Ni-ki’s fist hung in the air. Heeseung, who had been bracing for impact, went still. They thought of how this was the first time they’ve heard you scream in fear like that. They were already feeling guilty for doing this, but now it was breaking their hearts. You looked so scared, your hands were shaking so bad that Ni-ki could feel it against his knuckles. And he couldn’t look at you.
He couldn’t look at you because then it would all end, and maybe it should’ve ended moments ago.
And then, the most bizarre thing happened. The rage on Ni-ki’s face melted away, replaced by wide eyed shock. Heeseung, still pinned, let out a choked… laugh?
Ni-ki slowly lowered his fist, a grin spreading across his face. Heeseung started laughing fully now, pushing Ni-ki off him and sliding off the island, brushing himself off.
“Oh my god, your face,” Heeseung wheezed, pointing at you.
Ni-ki was beaming, looking from Heeseung to you. “We got you! We totally got you!”
The world tilted on its axis. Your blood, which had been ice-cold with fear, instantly boiled. The tremble in your hands was no longer from fear, but from a white hot, consuming fury.
“What?” you whispered, the words barely audible.
“It was a prank! Jake said you texted him, so we thought we’d really sell it!” Ni-ki said, still grinning, completely oblivious to the storm brewing in your eyes. “You should have seen your—”
“You think this is funny?” Your voice was low, dangerously calm, cutting him off.
The smiles finally faded from their faces. They saw the tears of shock and anger now welling in your eyes, the way your entire body was rigid.
“Noona, it was just a joke—” Ni-ki started, taking a step toward you.
“Don’t!” you snapped, recoiling as if he’d struck you. “I need to go.”
The full weight of your words finally hit them. The laughter was gone, replaced by dawning horror and guilt. And their eyes locked on each other as they now noticed how messed up they were.
You bent down, snatched your phone from the floor, and grabbed your bag. Your movements were sharp, jerky with adrenaline and hurt.
“I don’t want to see either of you right now,” you said, your voice thick with unshed tears you refused to let fall in front of them. You walked to the door, yanking it open.
“Wait, please—” Heeseung said, his voice small.
You didn’t turn around. You just walked out, letting the door slam shut behind you, leaving them in a silence that was now heavy with the crushing consequence of their joke. The echo of your scream, a sound born of genuine fear, lingered in the air, a stark reminder that some lines should never be crossed, even for a laugh.
You heard the hesitant knock on your door that evening, a soft, rhythmic tap that was a far cry from their usual boisterous arrivals. You already knew it would be them. Taking a steadying breath, you wiped your cheeks one last time and went to answer.
You opened the door but didn’t meet their eyes, instead turning and walking back into your apartment, leaving the space open for them to follow. That simple act; the denial of eye contact, felt like a physical blow to both of them. They shuffled in, the silence heavy and suffocating.
In the light of your living room lamp, they could see it clearly. Your eyes were puffy and red rimmed, your nose was flushed, and your cheeks were red. You’d been crying, hard. And in a twisted, guilty corner of their minds, they both registered how heartbreakingly pretty you looked in your vulnerability, a thought that immediately made them feel sick with themselves.
Without a word, you walked into the kitchen. They heard the clink of mugs, the click of the kettle, the quiet, methodical sounds of you making tea. It was worse than yelling. It was this calm, domestic ritual performed in the wake of their storm. You returned with a tray holding three steaming mugs, placed it on the coffee table, and then retreated to the single armchair, curling your legs under you, creating a physical and emotional distance.
You finally looked at them, but your face was a carefully composed mask. It was utterly expressionless. No anger, no sadness, just a hollow neutrality that was more terrifying than any visible rage.
Heeseung, as the oldest, knew the burden fell on him. He cleared his throat, the sound unnaturally loud.
“We… we’re so sorry,” he began, his voice uncharacteristically small. “It was stupid. The idea was all of ours. We all agreed to do it. We were on the phone and we thought… we thought it would be a harmless prank. Just to see you get a little flustered.”
He glanced at Ni-ki, who was staring at his own hands, his jaw clenched tight.
“We got carried away,” Heeseung continued, his words tumbling out now. “We started and it just… escalated. We thought we were being funny. We never, ever meant to hurt you like this. We’re idiots. Complete and utter idiots.”
You listened, your mask not flickering. You took a slow sip of your tea, the warmth doing nothing to thaw the ice in your chest.
“Harmless?” you finally spoke, your voice quiet but clear. “You think pretending to be violently out of control is harmless?”
You set your mug down with a precise click. The composure began to crack, a tremor in your hands. “I was terrified,” you whispered, looking down at your lap. “I genuinely thought one of you was going to get seriously hurt. I saw Riki’s fist… I thought he was going to break your nose, Heeseung. I thought there would be blood, and broken bones, and the end of your group, and it would all be over in a single, stupid moment.”
A tear escaped and traced a path down your cheek. You swiped at it angrily. “And I was standing there, and I was so scared that if I tried to get between you, I might get hit too. But I was going to do it anyway. I was ready to because the thought of you two hurting each other was worse.”
That was the confession that broke them. The image you painted—of you, scared but willing to throw yourself into the middle of their fake violence to protect them—was a mirror held up to their actions, and the reflection was ugly.
Your composure shattered completely. A sob wracked your frame, and you buried your face in your hands, the tears you’d been holding back now flowing freely.
That was all it took. Ni-ki moved first. In two long strides, he was at your chair. He didn’t ask. He simply sat beside you, his own eyes glistening, and wrapped his arms around you, pulling you against his chest. He tried to fit himself onto the chair with you, a tangle of limbs and remorse.
“I’m sorry,” he choked out, his voice muffled in your hair. “I’m so sorry, noona. I’m an idiot. A cruel, stupid idiot. I never want to see you cry. I never want to be the reason you’re scared. Ever again. I promise.”
His embrace was tight, almost desperate. You didn’t push him away. The dam had broken, and you cried into the soft fabric of his hoodie, all the fear and betrayal pouring out. Heeseung watched, his own guilt, a heavy stone in his stomach, before he came over and knelt too, placing a comforting hand on your knee.
“We’re sorry,” Heeseung repeated, his voice thick. “It was a terrible, awful joke. We see that now.”
They held you as you cried, the untouched tea growing cold on the table.
The three of you couldn't possibly fit on the single armchair. In a fluid, gentle motion, Heeseung shifted from the floor he knelt before you, lifting you from your curled position by grabbing you from behind your knees and a hand by your lower back and settling you onto his lap, pressing your back against his chest. His arms wrapped around you, holding you securely, while Ni-ki remained on the armchair, his chest still your pillow.
As your sobs began to quiet into hiccupping breaths, Heeseung pressed a soft, lingering kiss to the nape of your neck. He carefully moved your hair aside, his lips tracing a line of silent apology along your skin. At the same time, Ni-ki pressed his own kiss to your hairline, to your temple, his breath a warm caress.
"Does this help?" Heeseung murmured against your skin, his voice a low vibration against your back. "The kisses?"
You could only nod, your face still buried in the safe harbor of Ni-ki's neck, the simple gesture speaking volumes where words failed.
But Ni-ki wanted to see you. Gently, he took your face in his hands, his thumbs wiping away the tear tracks. He looked at you, truly looked, and his breath caught. Your eyes were swollen, your lips trembled, and you looked utterly ruined. But to him, in the soft lamplight, you were the most beautiful, heartbreaking sight he had ever seen. The guilt was still there, but it was now mixed with a fierce, protective adoration.
"So beautiful," he whispered, his voice raw. "Even like this. Especially like this."
Heeseung hugged you tighter, one hand splaying possessively on your stomach, rubbing slow, soothing circles. The touch was comforting, until his hand slid higher, his fingers brushing the sensitive underside of your breast through your shirt.
A jolt of shy awareness shot through you. You squirmed on Heeseung's lap, a reflexive movement that only made you more acutely aware of the hard ridge of his erection beneath you. You tried to hide your flushed face back in Ni-ki's neck, but he held you steady, his gaze intense.
Seeing the flicker of desire in your eyes, not rejection, he leaned in and captured your lips in a slow, deep kiss. It was an apology, a question, and a promise all in one. You melted into it, your hands coming up to clutch at his shoulders.
Encouraged, Heeseung's hands moved again, this time slipping under the hem of your shirt, his warm palms flattening against your stomach. "Is this okay?" he breathed into your ear. "Can we... can we make it up to you like this? Can we show you how precious you are?"
The question hung in the air, thick with tension. You were surrounded by them, their warmth, their scent, their palpable regret and burgeoning desire. You felt cherished, wanted. You nodded, your voice a whisper.
"Yes."
That was all the permission they needed. Heeseung carried you to your bedroom with reverent care, as if you were something fragile and sacred. They undressed you slowly, between whispered apologies and worshipful praises.
"We're so sorry, baby," Heeseung murmured, kissing a trail down your sternum as Ni-ki focused on your lips, your cheeks, your eyelids.
"You're so precious to us," Ni-ki breathed against your mouth. "We'll never scare you again."
Their touches were everywhere, mapping your body with a devotion that left you trembling. Heeseung groaned when he pulled your bottoms down, seeing a wet patch on your panties. You weren’t even wearing something sexy, it was unmatched and old but you could see how Heeseung struggled holding himself together.
“Look how wet she is,” Heeseung called Ni-ki to show him your wetness, and Ni-ki purred upon seeing the same view. The hunger was evident in both their gazes, softening into pure care when they landed on your face. “She’ll take us so well, isn’t she?”
Ni-ki moved down the bed, settling between your legs. He looked up at you, his eyes dark with a mix of nerves and awe. Heeseung pressed a finger on the wet patch, watching your arousal spreading through the fabric as he did. He chuckled, his other hand softly caressing your hair. "You're so beautiful.”
Ni-ki pulled your panties down, your slick arousal following your panties like a thin thread. He was ready to dive in when Heeseung put his hand on your pussy, fingers spreading your lips to show the younger one how your insides were coated with slick.
“God, she’s dripping. You need to clean her up, Ni-ki. Don’t waste a drop.”
Ni-ki nodded and scooped up from your hole to your clit with his flat tongue. He swallowed and moaned against your clit, making your hips buckle. You held your moans in, and looked at Heeseung for mercy. He cooed at your face, still flushed from crying and from the hotness of the situation.
Heeseung lips closed over yours and you moaned into his mouth as Ni-ki worked you open. You felt his finger nudging against your entrance and arched your back, holding onto Heeseung with your fists clenched. Ni-ki slid his finger in slowly, and felt your walls clamping down on his digits as he added another one. Heeseung was kissing you like crazy, you couldn’t keep up with him as he sucked on your bottom lip and your tongue at the same time, you just pressed his face to yours from his neck.
"He's never done this for anyone else,” Heeseung whispered as he came up for air, cradling your head as he kissed you deeply. "Only for you."
The sensation of Ni-ki's mouth on you was electric, unfamiliar and overwhelming. You gasped into Heeseung's kiss, your fingers tangling in Ni-ki's hair as he learned what made you arch and whimper. He was attentive, patient, his sole focus was your pleasure, his every action a silent vow of penance. When you came apart with a broken cry, it was against Heeseung's lips, your body shuddering under Ni-ki's devoted attention.
"Now, Riki," Heeseung said softly, his voice a gentle command. "Be gentle. She's all yours."
“You sure, hyung?”
“Yeah. She’d love to have you as her first, right, Y/N?” Heeseung asked you, and you looked at Ni-ki, who was towering over you, removing his shirt slowly as he waited for your answer. The hard planes of his torso, his perfect skin and his big biceps were ready to manhandle you. And your hips twitched with the thought. Heeseung giggled, “Just how I thought.”
Ni-ki smiled and moved over you, his body trembling. He slowly removed his sweats, his black boxers were hiding how big he was under it. His cock hit his abdomen, curved and thick and long.
"Look at me, noona," he whispered, his voice thick with emotion. As he positioned himself at your entrance, he talked you through it, his eyes locked with yours. "It's just me. It's just us. Breathe for me. I've got you."
The initial pressure was intense, a sharp, stretching burn. You whimpered, and he stilled instantly, dipping his head to kiss you, to swallow your sounds, his hands stroking your hips. "Shhh, I know. I'm here. Just relax for me."
He moved with painstaking slowness, letting your body adjust to his, his forehead pressed to yours, his breath mingling with yours. Heeseung held your hand, feeling you squeeze when you thought it was too much, and he directed Ni-ki to go slower. You didn’t have to say anything, Heeseung already knew your body without being inside, without even fucking you.
“You’re doing so good, Y/N.” Heeseung kept repeating. “You’re such a good girl for us. I’d give everything to be in Ni-ki’s place.” He got closer to your ear, palming himself through his sweats, the other still holding your hand. Ni-ki was buried in your neck, leaving hickeys and small pecks on your skin as Heeseung kissed you. “I’d give everything to be your first. To be the first one to feel your pussy around me. To be the first one to fuck you dumb.”
You moaned into his mouth. Your one hand was around Ni-ki’s shoulder as he slowly, painstakingly slowly sliding his huge cock in your tight pussy, and the other hand was letting Heeseung’s hand go to cup his hardness through his sweats. Heeseung immediately pulled everything down to reveal his dick, it was not as long as Ni-ki’s but it was thick, even his tip was huge that made your mouth moth water. You swallowed and wrapped your hands around it, listening to Heeseung’s growls next to your ear.
“Noona, you have no idea how hard I want to fuck you.” Ni-ki purred to your neck, his breath giving you shivers. They talked from each side, getting you wetter and wetter, easier for you to take Ni-ki. “Your pussy is so tight that I’m about to go crazy.”
“Ni-ki, fuck her good or else I’ll show her how hard I can make her cum.” Heeseung moaned as you squeezed your hand around his base.
“Don’t fight again,” you moaned, earning laughs from the two boys.
“Okay, okay. I’m sorry, baby.”
“I’ll make it up to you, noona.”
When he was fully sheathed, he stayed still, just holding you, whispering how perfect you felt, how much he loved you.
When he began to move, it was a slow, deep rhythm that quickly built into something more urgent. You opened your mouth to signal how you want to suck Heeseung, while stroking him in time with Ni-ki's thrusts. But Heeseung caught your wrist, bringing your fingers to his lips for a kiss.
"No, sweetheart. Not tonight," he murmured. "Tonight is only for your pleasure. I’ll teach you later, alright?” You nodded.
He then moved you, arranging your body with a practiced ease, he took your legs so softly, hooking your legs over Ni-ki's shoulders that allowed him to sink into you impossibly deep, hitting a spot that made you see stars. The bed creaked with the same rhythm, and your body moved forward with each thrust, Ni-ki held your breasts and squeezed them, flicking with his index finger as he drilled into you.
Heeseung grabbed your ankles and folded you in half, pressing your legs against your stomach, your moans were louder, and they had the perfect view of your pussy swallowing Ni-ki’s huge cock. They both looked at your tight hole sucking him in, and groaned loudly.
“Fuck, she’s crying again.” Ni-ki hissed, looking at your tear streaked flushed face. Your face was pornographic, at least for someone who’s a virgin.
"She's close, Riki," Heeseung observed, his voice a husky whisper in your ear as he watched you unravel. "It’s my turn."
"But she hasn't come yet" Ni-ki started, his thrusts faltering.
"She's a virgin, Riki. Twice will be more than enough for her first time, she'll be too sore tomorrow," Heeseung explained, his tone gentle but firm. His hands were rubbing soothingly against the curve of your thigh. "Let me."
Quickly, Heeseung took Ni-ki's place as the younger one pulled out and immediately attached his hand around himself, Heeseung’s own entry smoother but no less overwhelming.
Heeseung saw the way your hole opened wider when Ni-ki pulled out, “Thank you for stretching her out for me.” he said.
He focused on that same deep angle, his pace relentless, Ni-ki helped your legs on his shoulders again, and Heeseung’s hand wrapped around your throat for you to open your eyes, and his eyes locked on yours. Ni-ki’s free hand landed on your clit for a couple small slaps, and he rubbed eights on your bud that made your legs tremble, body vibrating around Heeseung’s cock.
"Come for us, baby. Let go." he commanded.
A second, more powerful climax ripped through you, a wave of pure, mindless pleasure that made you cry out as you squirted around him, soaking the sheets beneath you.
The sight and feel of it pushed Ni-ki over the edge. With a guttural groan, he spilled himself across your stomach, his release hot and white against your skin. Heeseung did the same, as much as he wanted to fill you up, watch you drip his cum from your loose hole, he pulled out and fucked his fist for a few times before coming onto your body. You had white, sticky cum all over your stomach, some on your chest.
They held you as you trembled through the aftershocks, whispering praises and apologies into your skin.
“We love you so much,” Heeseung whispered to your cheek, and Ni-ki kissed your jaw. “We won’t make you cry from sadness ever again.”
Ni-ki glanced at his hyung for his implication of making you cry from pleasure. And they both laughed at this.
Then, with the utmost tenderness, they cleaned you up with a warm, damp cloth, their touches soft and reverent. They loved how plump you were, your breasts and your stomach and your thighs, spread out in your bed like this, spent and boneless.
They tucked you into bed, one on either side, holding you close in a protective cocoon of limbs and whispered affection. A soft, caring silence that promised this was more than just making up for a mistake; it was the beginning of something new, deep, and fiercely protected.
a/n: so i want to include this in the back because i didn’t want it to cover the fic,, as some people here know i had internet issues and i had to take the matters into my own hands and i imagined this whole thing before bed… and i had to get it out of my mind before i forget the details. i’ll work on the request starting from tonight or tomorrow morning! thank you for your patience!! 💜
