LOVE LETTER — 001: "You said to knock, but curiosity is a terrible thing to fight."
TEARS RUN DOWN MY THIGHS !
Or: Han jisung buys a new toy, decides to use said toy, but has no idea that his roommate will be coming home early which leads to.... problems.
Fic includes: nerd!sung, smut, sub!han, toy usage, overstim, fem!reader, dubcon (if you squint maybe..), subspace, swearing, han jisung is LOUD and rambly, oral (m receiving), reader helps jisung jerk off, usage of "baby," (directed at Jisung), mommy kink, roommates to lovers(?)
Wc: 2.9k (Wowie!!)
Jiji notes: this is my first ever fic yippee!! This is inspired by one chinese post I saw on twitter HAHAHA so big credit to them. Reblogs, comments, and likes are very well-appreciated. Enjoy reading !!
To say Han Jisung was excited would be the understatement of the century.
After the most brutal couple of weeks he'd had at university, he thought he deserved a little treat for himself. Between tutoring his juniors, submitting requirements on time, acing tests and surprise quizzes, and—most importantly—finishing that godforsaken coding sheet Chan wanted for a robotics competition, he'd earned it.
Point is, Han Jisung was tired.
He also hadn't had much time to indulge himself lately, especially since you'd become his roommate.
Now, don't get him wrong—you were helpful, funny, and always willing to listen to his ramblings about music production and beat-making and whatever became his favorite fixation at the moment. You'd even sit through entire anime marathons with him.
But, God, you seriously needed to learn how to knock.
There had been far too many incidents of you barging in while he was changing or in the middle of an online class. And those were just the first few examples that came to mind.
So when he decided to buy a toy to indulge in himself and his needs exploring more of kinks too, he made sure to lock his door and told you he was doing something 'important' so you wouldn't disturb him.
And that brings him to today. He'd been buzzing with anticipation all day, constantly tracking the package and checking whether it was already out for delivery that Changbin even joked he must have a girlfriend blowing up his phone lately with texts to get him to be glued 24/7 to his phone. Meanwhile Jisung just rolled his eyes and kept insisting it was not a girlfriend and just a "simple package".
And when he finally got that rewarding notification that his package had been delivered, it immediately made him ecstatic, especially after such a long excruciating day. He practically sprinted home, leaving Changbin and Chan standing there in confusion to eat up all the dust from how fast he had been running.
When he was finally at the doorstep of your shared apartment, he immediately picked up the box and practically tripped over his feet opening the door, toeing off his shoes at the entryway and tearing into the package impatiently.
He was wondering at first why the apartment was so dark and quiet, but he remembered you were out for an after-class club or something along those lines, and, he thought to himself as being incredibly lucky right now, he can finally relax without any interruptions!
He wasted absolutely no time heading to his room.
Dropping his bag beside his desk, he sat down and opened the package. Excitement buzzed through him as he examined its contents. His jacket and pants were quickly discarded onto a nearby chair, leaving him in a simple white tee and his boxers, and he finally allowed himself a moment to relax after the long day.
"Okay... let's see what you can do..." Jisung murmurs, unboxing the item and inspecting it. The toy was a bullet stroker, or that's what it said on the box. He checks the information on its little manual "Sucking sensation.... helps with jerking off... wow, it really does everything huh?" He jokes, murmuring while he reads the rest. And embarrassingly, the thought of using it already got him hard in his boxers, some pre already leaking, darkening his boxers further.
Shimmying out of his boxers and propping his pillow upright to support his back when he'd lean on the headboard, Jisung finally let himself enjoy his new toy. Of course, he cleaned it up before use.
"Okay, let's see you in action then," Jisung concludes, grabbing some of his favorite strawberry-flavored lube from his bedside drawer, opening its cap with a distinct 'click!' that reverberated throughout the small space. He squirts it all over his very hard and erect cock as well as the toy, the cold liquid making him hiss a little as he slowly inserts it, wincing at the squelch that made him shiver.
He lets himself be familiar with the sensation first. It was warm thanks to the heat of his skin and the lube that was quick to warm up. It almost felt jelly-like and tight, hugging his cock tight once he started to move his hand a little
He slides the toy over the head of his penis, eyes shutting tight at the sensation, a shaky groan leaving his lips as he moves it in a slow up-down-up-down motion to spread the moisture. The toy gripped him like a vice, like a suction feeling that didn't want to let him go, a tight slide when he flicked his wrist again to build a steady pace.
Jisung's hands paw around at the bed, looking for the remote that came with it, fumbling for that little item, opening his eyes with effort as he presses the "on" button.
Once the vibration starts, Jisung's hips jerk up into the toy in surprise, “O-oh! Shit–! That's– haha that's pretty– hngk s-strong!” He whimpers, a heavy buzz at first, but once he pressed it firmly against his skin, it quickly turned to a soft, quiet hum, filling the room along with the soft squelches of the toy gliding when he moved his hand.
His fingers pressed the button again, a steady hum that was a little stronger than before. He starts to slide down the bed more, tummy tensing as loud moans leave his swollen lips, not deciding to even be quiet since technically he is alone at the moment
A particularly louder whimper steals his breath when he presses the toy against the underside of his cock, toes curling at the sensations. "F–fuck! 's good..." he breathes out, eyes half-lidded.
It went on like this for longer. He was progressively getting louder and louder the more he let himself succumb to the sensations, His breaths turning to ragged, shallow gasps. The wet slaps of the lube intensify as he finally starts to stroke the vibrating sleeve up and down in a frantic, desperate rhythm. (When had he even stopped moving his hand?)
His fingers tightened around the remote, fingers slipping as he pressed the button to turn it to his highest setting, a choked-out whine being punched out of his lungs
"O-oh my go–angh! Go-d!.. T-Too much–!" Jisung's voice pitches higher and higher once he starts getting closer to his orgasm, two hands clutching the toy as the wet slaps of the toy intensify once he starts fucking his hips up into it harder and harder.
The buzzing grew intense, his thighs started to quiver as he felt like his brain was leaking out of his ears. The sensations all the more felt like his blood was turning to liquid heat, rushing under his skin. “ 'm close– ngah! Gon–na c-cum!" He announces to no one, hips chasing after the pleasure almost frantically
But just as he was about to completely tip over the edge, he suddenly heard his bedroom door open. Your voice immediately fills the room, and he squeaks, pulling his hands away, and clamping his legs shut, pulling his blanket further up his chest. "J–jeez what the hell!!" He yells, flustered.
"Sorry! Sorry!" You apologize, fully entering his room now. You assumed he'd just been resting, but seeing that he's shirtless, maybe he just came back from the shower, and it was another one of those 'I almost walked into him changing again' moments.
You shut the door behind you, the 'click!' His door felt like a doom bell in Jisung's head because suddenly you started to.... chat with him?!
"Okay, I just HAD to get this out before I forget, listen— remember Ji-a from my biology class? Yeah, like the one that told me I've been stealing her things when I clearly HADN'T? Yeah– guess what she did today!" You kept rambling on and on, your hands completely expressing what you were trying to convey, your brows furrowing at whatever gossip you were telling him.
And while usually, Jisung would listen and be completely invested in whatever you said, all the words you spewed out felt like a buzz in his head. Because he had been so scared of you coming in to see him that he quickly covered himself with his blanket, he forgot to turn off his toy.
Which meant that right now, while you're babbling on and on about something he usually would've cared about, he can't bring himself to actually listen because his cock was leaking, the toy still hugging it tight while it kept vibrating on his most sensitive spots. His thighs tensing, his vision blurring with tears he kept trying to blink back.
His knuckles went white with how tight he clutched his blanket, small shaky hums, and "To-Totally!" Left his lips. He pinched his arm, trying to direct his head into something other than the overwhelming feeling of his orgasm getting closer and closer.
Though much to his horror, his body couldn't contain all this pleasure anymore and before he knew it, he's cumming and oh– he's cumming so so much that he felt floaty and lightheaded. He shut his eyes, desperately trying to fight back a moan, his lips bitten harsh enough to draw blood and the metallic tang floods his taste buds.
“Sung? Sungie– Hey??? Are you listening?” He hears you, though it starts to sound like he's underwater, your voice distant. He was still panting, chest heaving from the brutal and soul-sucking climax, the toy still vibrating on his dick. He didn't register it, but you stepped closer in confusion, tapping his thigh with much force which immediately sent him further as his entire body violently jerked, squirting all over as the blankets started to darken from the stain. His eyes rolled back, back arching once the second orgasm was pulled out of his oversensitive body.
“Jisung…? Did you just–” You murmur in disbelief, watching as he desperately tries to screw his eyes open, his eyes wide like saucers, pupils dilated as his tongue was practically rolling out of his mouth, drool starting to slip. He whimpers, the feeling of fear creeping in as he tries to pull back from you, creating some distance although his movements were clumsy.
“ 'm s-sorry I'm sorry–" a moan cuts him off. The apologies tumbling out of his mouth blurring to begs. "T–turn it o– ogkh–! Fuck! Off! Turn it off please, please, please!” He begs, a helpless, broken whimper caught in his throat as his thighs begin to shake uncontrollably all over again. He couldn't hold back anymore, his arm was all bruised up from trying to pinch himself quiet to no effort as he writhes on the bed. Meanwhile, you, who had been standing frozen in shock, snapped out of your haze at watching your roommate literally fall apart all from a toy that you could finally hear the buzzing of once you stopped talking.
You fumbled around the bed, fingers coming into contact with smooth plastic and you pressed the button, the incessant buzzing of the toy finally shut off leaving Jisung shivering and half-ruined, softly whining at the loss of pleasure as he pants, shaking fingers finally pulling away the toy from his swollen cock.
“hey, hey, sungie?” You kneel, the mattress dipping under your weight as Jisung subtly nods his head in reply. You quickly noticed his eyes were half-closed, glazed over, and his legs were trembling so violently the mattress shook “Hey… are you okay?” You cooed softly, voice laced with concern. Meanwhile, Jisung didn't even answer, just letting out a fractured, breathless whine while he stares blankly at the ceiling
Worried, You leaned over and placed your palm flat against Jisung's inner thigh to try and steady his shaking leg. But the instant her warm skin met his, his entire spine arched off the bed. A sharp, incredibly loud gasp tore from his throat, his fingers instantly clawing into the bedsheets. He wasn't pushing you away—his hips instinctively twitched upward, helplessly chasing the heat of your hand.
“Nghk–! Too much!” He moans. You froze, your heart hammering against your ribs as you realized just how incredibly raw and responsive he was.
Jisung looks up at you, eyes completely unfocused, silently begging for more but unable to form a single word. His throat clicked as he tried to swallow. The sheer vulnerability of his state sent a heavy, electric jolt straight to your stomach. And just as much your logical mind would go against it, you felt yourself getting wet under your skirt. The boundary was gone.
You didn't pull your hand back; instead, you slowly slid your palm higher and higher, tracing the fever-hot skin of his thigh until your fingers brushed against him. "You're so sensitive," you whispered, Jisung's breath hitched while your voice trembled. "Let me help you.”
You leaned down, your lips brushing against his hyper-sensitive skin before you finally took him into the melting warmth of your waiting mouth. The contrast to the cold plastic toy was too much. He let out a loud, cracked sob, his hands flying up to grip your hair, fingers tight begging to just hold onto something stable while his world spun. It sent a shiver across your skin once he tugs, making you moan against his cock
You started with small kitten licks to the head of his cock, then swirled your tongue over the wet head of his length, hearing him instantly start to unravel out loud. "Oh god, o-oh! fuck!, it's too warm, you're too warm," he babbled, his voice raw and frantic. "Please—fuck, I can't think, my head is spinning, everything is spinning…” Jisung moans, head hitting the pillow as he vocalises every feeling coursing through his veins once he starts to get close again.
Seeing him right on the ragged edge, you pulled back, shaking his grip on your head away, replacing your mouth with the slick, tight grip of your palm. You stroked him fast—much easier with his previous two orgasms—using his own slick moisture, looking right up at his glazed eyes.
"Look at you," you murmured, pumping him steadily. "You're doing so well for me, baby. You look so beautiful unraveling f'me." The praise sent an electric jolt straight to Jisung's core, shattering whatever tiny bit of control he (surprisingly) had left.
He didn't just groan; he started loudly rambling in a desperate, unfiltered loop as the third climax was hitting him. "I'm sorry, I'm sorry, mommy, it's so good, fuck, you're so good to me, please don't stop—fuck, it's close! It's coming—" His thighs convulsed violently as he wails.
His fingers clawed at the sheets, bunching the fabric into balls as he clenched his fists “gonna cum– mommy please I'm gonna— gonna cum—” loud ah ah ah's left his lips as he arched his back, hips stuttering as he thrusted up into your tight warm hand, mind so torn between pulling away and wanting more.
And at once, a sudden powerful spray of clear, watery fluid gushed over your hand. He kept crying out, eyes rolling and back bowing in a beautiful arch off the bed, his voice cracking into breathless, repetitive whimpers long after the fluid stopped, completely spent and entirely yours. He slumps back down the mattress, the powerful waves finally subsided, leaving the room quiet except for the ragged sound of his wet, broken pants.
He lay completely flat, chest heaving, his fingers still weakly tangled in the bedsheets. You didn't pull away. Instead, you crawled further up the mattress, the bed dipping as you hovered over his shivering frame.
His eyes were still glazed, pupils blown wide as he stared blankly up at you, his lower jaw slack. "Look at me, Sungie," you cooed softly, your hand coming up to gently cup his flushed, sweaty cheek. He let out a weak whimper at the contact, his head automatically tilting into your palm.
You leaned down, your lips catching his breath before you pressed your mouth firmly against his. The kiss was immediate, heavy, and sloppy. You slid your tongue past his parted lips, tasting the unmistakable, sharp tang of his own spent fluids mixed with your saliva. The sheer intimacy of it made Jisung let out a muffled, vibrating groan deep in his throat.
He didn't have the physical strength to hold you or push his hips up anymore, but his mouth eagerly, desperately chased yours, drinking you in like a lifeline. He was completely undone, his body still occasionally twitching beneath you from the aftershocks of the third round, but as you deeply turned the kiss, his frantic breathing finally began to slow. He was entirely safe in your hold, utterly ruined, and completely content just to melt into the mattress under your weight.
As you finally pulled back from the deep, lazy kiss, a thick thread of saliva stretched between your lips before breaking. Jisung lay beneath you looking like a thoroughly dazed, melted puddle, his eyes blinking slowly as the cognitive gears in his brain finally clanked back into place.
He stared at you, then down at the ruined, dark stain on his blanket, and then—horrifyingly—the memory of his own unfiltered mouth echoed in his ears. His eyes suddenly went wide as saucers, a furious, bright crimson blush exploding from his neck all the way to the tips of his ears.
"I... I called you... did.. I?? I did... oh my god," he choked out, burying his face entirely in his hands as a pathetic, muffled groan of pure embarrassment escaped him. You couldn't help but let out a soft, teasing chuckle, leaning down to plant a fond kiss right on his knuckles.
"Don't worry about it, roomie," you murmured playfully, brushing a stray piece of hair from his sweaty forehead. "But just so we're clear... you're definitely doing my laundry for next month.”
@hyvnesangel hi... haha... I was the new writer anon 💔💔 I hope you like it.. 😔😔 (I actually wrote this horny with 2 hours of sleep...)
💌 With love, Cupioyennie | Credit to bpdspain for borders!

















