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which one is your best side? (both sides)

Summary:

Jaemin is stressed about preparations for their subunit debut.

So, Jeno does what any good boyfriend does: lets him take it out on his ass.

Notes:

I want to start this by saying that consistently I have always been a top!jeno/bottom!jaemin truther from day one of shipping nomin, but I was reading an extra from the webtoon take off by jui and I just found the switching scene in it really hot

so naturally I had to apply that to my boys...for all my usual readers, I'll get back to my traditional top!jn/bttm!jm content soon but I'm in my late luteal phase so this had to be done sorry #tmi

ALSO I feel like this is a good present to everyone in the nomin community after our boys FINALLY DEBUTED AS NCT JNJM!!! literally the album is fucking amazing I'm so so proud of them

anyways. please enjoy my first ever attempt at switching bc I quite literally have never done it for any of my ships before lmao

(title is of course from Both Sides by NCT JNJM!)

(See the end of the work for more notes.)

Work Text:

It's been over a week of this.

Like clockwork, Jaemin comes back from his vocal lesson and slams the door shut behind him. Jeno asks how his day was, Jaemin grumbles a short, “Fine.” “Okay.” “Good.”

Jaemin will then go up to their bedroom and slam that door shut, before taking a long shower.

When he's done, he'll bound down the steps with Luke or Lucy or Luna in hand. He'll set whichever cat down, then start making dinner.

They'll eat, Jeno will talk about anything and everything that doesn't have to do with their work. Jaemin will hum in response.

Jeno will try again to get his boyfriend to talk about his day. He'll get a sigh first, and then:

“I can't tell if I'm unhappy with my lyrics, or I just sound…bad.”

Or:

“I'm getting frustrated lately in my lessons. I just can't make my voice do what I want it to do.”

Or sometimes:

“It was fine, Jen. What do you want me to say?”

No matter what the response is, Jeno will try to be comforting. Encouraging. Supportive.

And Jaemin…he'll shut down, no matter what Jeno gives him.

When Jeno washes the dishes, he won't come up behind him and give him a squeeze before he gets back to putting away the food.

If they watch TV, he sits on the opposite end of the couch with one of the cats instead of in Jeno's lap.

After they brush their teeth, Jaemin won't playfully ask to put some of his lip balm on Jeno, then lean up to kiss him.

They'll go to bed together, and Jeno will try to initiate – sometimes with slow kisses, sometimes by slipping a hand up his shirt, or sometimes even just blatantly rocking his hips against Jaemin’s ass.

Each time, he's met with a: “Not tonight.”

The whole song and dance has been frustrating for many reasons, but mostly because Jeno doesn't know how to be helpful.

Jaemin doesn't want to talk about it, and he doesn't want to hear what Jeno has to say, even if it's kind.

And now, on day 10 of Jaemin’s voice lessons, Jeno's fed up.

Jaem: [picture]

Jaem: photog sent teaser of my part of the album photoshoot. what do you think?

Jeno opens the picture and nearly drops his phone.

caller no emotion: This just ruined my day

Jaem: ???

Jaem: is it that bad??

caller no emotion: How am I supposed to do anything else

caller no emotion: Except stare at my beautiful boyfriend

Jaem: jfc

Jaem: I was literally about to block you

Jaem: does it look okay? they want approval

Jaem: I think it will look nice with the concept

caller no emotion: Looks incredible to me

caller no emotion: Are you busy right now?

Jaem: kk I'll tell them we like it

Jaem: yes, abt to head to vocal lesson

caller no emotion: Okay, see you at home?

Jaem: yeah, gtg love you

caller no emotion: I love you too

Jeno lets out a frustrated sigh as he collapses against their bed, bulge obvious in his sweatpants.

Ten days.

It might not seem like a long time, but he's been deprived of touching Na Jaemin for ten days. Even 24 hours feels like a lifetime.

Jeno huffs as he reaches down and starts palming himself as he stares at Jaemin's photo.

He's worked himself up to full hardness when the idea strikes.

He knows exactly how to help his boyfriend with his problems, and solve his.

When Jaemin comes home, he slams the door shut behind him.

He looks up expectantly to find Jeno on the couch or in the kitchen – but he isn't here.

“Jeno?” Jaemin calls out. “I'm home!”

Luna bounds up to Jaemin and winds herself between his legs, and he picks her up.

“Hi Luna,” he whispers, pressing a kiss to her head. “Where's your dad, hm?”

Luna just meows in reply, then squirms out of Jaemin’s hold and dashes off.

Jaemin walks up the stairs and finds their bedroom door closed.

“Jen?” He knocks on the door. “You in there?”

There's no answer, but Jaemin turns the doorknob anyway.

“J–oh!”

He walks in to find Jeno on the bed, one of Jaemin's pillows between his bare legs.

His cheeks are flushed, and he lets out breathy grunts as his hips shift forward.

“Y-you're home,” Jeno pants, eyes half-lidded as he looks up at Jaemin. “Hi.”

“What are you doing?” Jaemin asks, shutting the door behind him so the cats won't interrupt.

“Missed you,” Jeno mumbles. “Missed you, ah, so much, bun…”

Jaemin's ears practically perk up. Jeno only ever called him that in bed.

He approaches Jeno on the bed, swallowing dryly as he watches him get off. “Missed me so much you had to hump my pillow?”

Jeno lets out a desperate whine that goes straight to Jaemin’s cock. “Y-yeah…I needed you.”

Jaemin's breath hitches. “Yeah? My poor little pup needed me?”

Jeno groans quietly at the nickname. “Need you so bad, Jaem. Been so fuckin’ horny…”

Jaemin reaches out and runs a hand through Jeno's hair, frowning. “I know…I'm sorry. I've been so worried about the unit and my lessons that I…I'm sorry, Jen.”

Jeno nearly keens at the feeling of Jaemin's touch. “It's okay. I-I know…that's why I wanted to, hah, surprise you.”

“Surprise me?”

Jeno tosses the pillow to the ground, revealing his stiff red cock, then crawls up the bed on his hands and knees.

He bends down, ass up. Then he places his hands on his thighs and spreads his cheeks apart so Jaemin can see his gaping hole.

“I want you to use me,” Jeno murmurs shyly. “Take out all your stress on your puppy.”

Jaemin eyes Jeno's ass hungrily. “Fuck…are you sure, Jen?”

“Yes,” Jeno says breathlessly. “I stretched myself just for you to fuck and use.”

“Shit,” Jaemin curses, reaching down to press the heel of his hand against his already rock hard cock. “When did you do that?”

“After you texted me today,” Jeno replies, watching as Jaemin starts stripping off his clothes. “I fingered myself for you.”

Jaemin scrambles to kick his pants off. “Fuck, that's so hot,” he mutters as he finally gets naked.

It's not often that Jaemin gets the chance to top in their relationship, just because he prefers to bottom. But every so often, they like switching things up – it keeps things fun, Jeno thinks.

But it's been so many days without any action at all that Jeno thinks he might lose it if he doesn't get to put his cock inside Jaemin.

He needs it. It's been way too long, and he needs to fuck what's his.

“Jaem…when you're done,” Jeno murmurs before Jaemin joins him, “...I wanna fuck you too.”

Jeno can see the excitement flash across Jaemin's face. “Fuck, pup…okay. I'll give you what you want.”

Jaemin climbs onto the bed and positions himself behind Jeno, sliding his hands over his ass slowly.

“...But first, I want you to show me how badly you want it.”

Jeno feels his face getting redder the more he stays spread open like this on the bed, fully exposed.

He lifts his hips higher and shakes them back and forth for Jaemin, like a puppy wagging its tail.

“Please, Jaem…fuck me,” he begs. “I wanna be a good pup for you.”

“Yeah?” Jaemin asks, then pushes Jeno's hips down slightly until his cock meets his thigh. “Hump against my leg then, like a good puppy.”

Jeno whimpers at that, rolling his hips forward instantly and grinding his cock against Jaemin’s smooth skin.

“Ah…feels g-good,” Jeno murmurs, the friction sending waves of pleasure up his spine.

“Good boy,” Jaemin hums, running his hands along Jeno's sides as he watches him fuck his thigh. “Better than the pillow, hm?”

“So much better,” Jeno sighs contentedly.

“My desperate little puppy…I can already feel your cock leaking.”

Jeno whines, feeling embarrassed as precum blurts from his tip. “Fuck, please…”

“Lift your hips back up, pup,” Jaemin directs, using one hand to grip the base of his cock as he gets on his own knees behind Jeno.

Jeno obeys, spreading his legs again and arching his back up.

“God,” Jaemin mutters, sliding the length of his cock ever so slowly across Jeno's lubed up rim. “You look so fucking sexy like this, ass out just for me.”

Jeno clenches his hole around nothing, letting out a whimper into the mattress. “Oh, Jaem…”

“Yeah, puppy?” Jaemin hums, then presses the head of his cock inside Jeno ever so slightly. “This what you wanted?”

Jeno gasps against the bed. “O-oh, fuck!”

“That's just the tip,” Jaemin smirks, watching Jeno's hole slowly swallow his cock inch by inch. “Keep taking it, baby, that's it…”

Jeno groans as he feels Jaemin’s length slide inside him. It's been a while, and he knows he must be tight around Jaemin from the way his boyfriend's breath stutters.

“Oh my god,” Jaemin mutters under his breath. “Feels so good around my cock.”

Jeno feels Jaemin press fully inside him, and he clenches around the base of it. “Ah, shit…”

Jaemin runs his hands over Jeno's ass and up the small of his back. “Fuck, you're so sexy, Jen. Doing this all for me…you're such a good boy. My perfect pup.”

Jeno whimpers as his cock twitches helplessly between his legs at the praise. “W-wanted to help my bunny.”

“So fucking sweet,” Jaemin murmurs, squeezing Jeno's ass in one hand. “Letting me fill you up with my cum.”

Jeno exhales shakily as he relaxes around Jaemin’s cock, arching his back a little higher.

“Please,” he whines. “Fuck me, bun.”

Jaemin grips at Jeno's hips, barely sliding out before he slams back into Jeno.

His thrusts are more sporadic than Jeno's typical smooth pace, but Jeno finds it hot. It makes it obvious how Jaemin hardly ever gets to put his cute little cock to use.

“Oh fuck,” Jaemin cries out, pulling out and sliding his cock up against Jeno's ass before he pushes it back inside. “F-feels so good, so tight…”

“Mm, right there,” Jeno moans, gripping the sheets in his fists. “Fuck, Jaem!”

“Fucking love seeing you bent over like this for me,” Jaemin mutters, fucking into Jeno faster. “On all fours, ass up like a good boy. I missed touching my pup.”

Jeno whimpers, then starts grinding his ass up against Jaemin’s cock, meeting his thrusts of his own accord.

“Fuck,” Jaemin moans, watching Jeno's ass bounce as he fucks himself on Jaemin’s cock. “Stop, Jen, I'm gonna cum.”

Jeno merely slows his pace, rolling his hips around before he slides back down onto Jaemin’s cock and swallows his length all the way to the base.

“Can't stop,” Jeno huffs as he squeezes around Jaemin's hard cock. “Need my cum bunny to fill me up…”

Jaemin lets out a whine at that, fucking his hips forward once into Jeno's tight heat. Then he thrusts again, and again.

“Fucking shit,” Jaemin curses under his breath as he speeds up again. “Puppy wants a treat that badly, huh?”

Jeno nods, half his face pressed into the mattress. “Please, Jaem…wanna feel you so bad.”

“Fuck, fuck,” Jaemin mutters, leaning forward to press his body into Jeno's back and fucking him deeper from behind. “Jen, ‘m gonna fucking cum…it's too early, I'm sorry…!”

Jeno bites back a groan as Jaemin starts letting out pathetic whines as he gets closer. “Don't be sorry, bun. Want you to feel good…cum for me, cum inside me. Give your puppy his treat.”

Jaemin gasps loudly as he spills into Jeno's tight hole, hips stilling as he cums hard.

Jeno nearly cums too, but he grips the base of his own cock to hold it in.

“God, that was hot,” Jaemin mumbles, sitting back up to slide his cock out of Jeno.

Jeno can feel the sticky, warm sensation of Jaemin's cum starting to leak out of his ass.

Jaemin can't help but reach out and trace Jeno's swollen and wet rim with his thumb.

“Fuck…was a thick load,” Jaemin murmurs, pushing some of it back in with his finger. “So hot.”

Jeno pants, looking over his shoulder with half-lidded eyes to gaze at Jaemin.

“Is it my turn now?” he asks huskily.

Jaemin pulls his hands away from Jeno. “Wait, I just–ah!”

Jeno turns around and tackles Jaemin to the bed, pressing kisses up his boyfriend's neck.

“But I've been,” Jeno says in between kisses, “so good…so patient, waiting for my turn. Please let your pup fuck you…”

Jaemin groans as Jeno sucks at his sweaty skin.

“O-okay, but I'm sensitive, so just – fuck, Jen!”

Jeno's gripping Jaemin's hips, grinding his cock up against Jaemin’s hole.

“I wanna be inside you,” Jeno whimpers into Jaemin’s ear, pressing him against the mattress as he humps Jaemin’s entrance from above. “Wanna cum in my hole.”

Jaemin loves when Jeno gets all needy like this. He slides a hand up to Jeno's face, forcing him to look him in the eyes.

“Get me ready then, pup,” Jaemin smirks, then spreads his legs and moves them upwards so Jeno can get a full view of his ass.

Jeno's eyes practically sparkle with excitement as he slides down to be face to face with Jaemin’s hole.

He sticks his tongue out and looks up at Jaemin expectantly, and fuck, does that make Jaemin's dick twitch back to life again.

“Go ahead,” Jaemin murmurs, giving Jeno a little nod. “Lick.”

Jeno eagerly glides his tongue along Jaemin’s rim, grunting as he feels Jaemin’s thighs bracket his head.

It feels good to please his boyfriend. It gets Jeno harder than anything else.

He gently traces his tongue around the rim a few times before he teases the tip of his tongue inside Jaemin’s hole, groaning at the tightness of the ring of muscle. Jeno then plunges it in all the way, flicking his tongue inside.

Jaemin's back arches against the bed as he reaches down to grab Jeno's hair with one hand. “H-holy fucking shit, Jen…”

Jeno starts fucking Jaemin with his tongue, groaning as he starts grinding his own hips against the mattress to give his cock some relief.

He grips Jaemin's thighs with his hands and slurps at his hole suddenly, making Jaemin whine at the loud, lewd noise filling the room.

“That's it, baby,” Jaemin murmurs. “Get me all wet.”

Jaemin tugs lightly at Jeno's hair, and Jeno's eyes practically roll to the back of his head as pleasure shoots down his spine.

“Please,” Jeno gasps out, lips slick with spit as he begs, “please let me have my turn.”

The sight of Jeno between his thighs with his lust-blown eyes, flushed cheeks, and messy hair makes Jaemin weak.

“Fuck me, then,” Jaemin says breathlessly, spreading his legs even further for Jeno to nestle between.

Jeno doesn't have to be told twice, obedient puppy as he is.

He positions himself over Jaemin, gripping the base of his cock with one hand as he carefully slips the head of it inside Jaemin’s now wet hole.

“I've been waiting to fuck you, ah, all day,” Jeno mutters as he starts sliding his cock in. “I got hard staring at your picture earlier.”

Jaemin slides his hands up Jeno's biceps as he feels his massive length continue to press inside him. “What – ah, fuck – were you thinking about?”

“This tight ass,” Jeno grunts, almost buried to the hilt inside Jaemin now. “Gripping that little waist of yours. How you get teary eyed when I fuck you properly. Your pretty face.”

“Mm, fuck,” Jaemin moans when Jeno's hips are now flush his body. “You fill me up so good, pup…”

Jeno presses his forehead to Jaemin's as he lets him adjust to his size. “Yeah? It doesn't hurt, does it?”

Jaemin nudges his nose against Jeno's. “No, feels good. I love it. I love you.”

Jeno's cock twitches inside Jaemin at that, and he captures Jaemin’s lips in a heated kiss.

Jaemin melts into the mattress as Jeno licks into his mouth. He lets his hands travel up to Jeno's shoulder blades, feeling his sturdy back muscles flex beneath his hands.

“Can I move, bun?” Jeno asks when they part for air, desperation creeping into his voice.

Instead of answering, Jaemin smirks and rolls his hips forward, making Jeno let out a loud groan against his mouth.

“Fuck me hard,” Jaemin commands breathily, wrapping his ankles around the small of Jeno's back.

Jeno bites his lip as he pulls out slightly, then rams his hips forward into Jaemin's tight heat.

As Jeno begins to rock his hips back and forth in a steady rhythm, Jaemin takes it upon himself to play with his puppy a little more.

“Such a good boy,” Jaemin moans over the sound of Jeno’s skin slapping against his. “Putting that big cock to good use.”

Jeno whines as he fucks into Jaemin harder. “I-it's good?”

“Mm, so good,” Jaemin says, tracing his fingertips along the expanse of Jeno's back. “Do you feel good, fucking your bunny like this? Fucking me when my own cum is leaking out of your ass?”

Jeno lets out a hot, breathless groan into Jaemin’s ear. “Oh fuck, yeah…feels so fuckin’ good…”

“Can you feel it on the back of your thighs?” Jaemin says in a low whisper, clenching around Jeno as he says it. “My cum?”

Jeno's hips snap forward yet again, deeper this time. “Y-yes,” he murmurs. “Fuck, Jaem.”

“My dirty little puppy,” Jaemin grins, then licks a stripe up the side of Jeno's neck until he reaches his ear.

Jaemin traces his lips against Jeno's earlobe, letting out breathy pants as he feels his cock slam into him over and over again.

“Are you gonna breed me, pup?” Jaemin asks into Jeno's ear. “Are you gonna fuck your bunny full with your cum?”

Jeno's hips stutter on his next thrust, and he grips onto Jaemin’s hips tightly as he whimpers out, “God, y-yes, please! I wanna cum inside, please…”

“Keep fucking me,” Jaemin whispers, legs tightening around Jeno's body. “Don't stop, please.”

Jeno does as he's told and continues delivering deep, sloppy thrusts into Jaemin’s suffocatingly tight heat.

“Bunny…” Jeno exhales, fingers squeezing at Jaemin’s flesh. “You feel so good, so sweet for me. I love being inside you, I love you…”

Jaemin digs his fingernails into Jeno's back on a thrust that makes him let out a cry. “Oh fuck! More Jen, please…!”

Jeno grunts, holding Jaemin down as he fucks him faster. “You can feel me, can't you? In here…”

Jaemin gasps as Jeno lightly pushes on his stomach, right over where his tip is deep inside him.

“Wanna fill you up to there,” Jeno mumbles, rolling his hips forward. “You want it, don't you? Wanna be bred by me?”

“Fuck,” Jaemin whines, clutching onto Jeno as if to ground himself as his hole trembles around Jeno's cock. “Yes, Jeno, please…I want your pups!”

Jeno can't help but moan at that. “Fuck, I'm getting close, Jaem.”

“Cum inside me,” Jaemin begs, clawing at Jeno's back as his legs begin to shake. “I'm gonna cum on your cock, so please – ah! Fucking cum inside me…!”

Jeno grips at Jaemin’s waist as he rabbits his hips forward, burying his cock deep inside him as he finally cums with a final groan.

Jaemin lets out a choked sob as he cums for a second time, his cock twitching helplessly where it's pressed between his stomach and Jeno's.

When he finally catches his breath, Jeno slowly drags his cock out of Jaemin’s hole, hissing at the sensitivity.

“Fuck,” Jeno mutters, collapsing on the space next to Jaemin. “Maybe you should get stressed out more often.”

Jaemin smacks at Jeno's chest playfully. “Shut up.” Then, in a softer voice, he says, “I really am sorry about these past few days. I missed you.”

“I missed you, too,” Jeno murmurs, wrapping his arms around Jaemin. “Don't be sorry.”

“But I pushed you away,” Jaemin frowns, lips forming a pout so cute Jeno could cry. “I was taking it out on you and I…I shouldn't have done that. I'm sorry.”

“It's okay,” Jeno reassures him. “I just…I wished you would just tell me what was wrong. I don't like walking on eggshells around you.”

“Me neither,” Jaemin nuzzles closer into Jeno's warmth. “I just…I couldn't work past it. I was just so in my head about everything and upset.”

Jeno presses a soft kiss to Jaemin's shoulder as Jaemin begins to gently trace patterns along his skin. “I know you've been so worried, but you're doing great with the lessons. Are you still scared about how everyone will react?”

Jaemin looks up at Jeno with a soft gaze. “A little bit,” he confesses quietly.

“You're a great singer, Jaem,” Jeno says sincerely. “It's going to be amazing, and the fans will love it. You're going to sound beautiful…just like you did just now for me.”

Jaemin snickers at that, burying his face into Jeno's shoulder. “You're an idiot. Why did I choose to do this subunit with you again?”

“Because you love me,” Jeno beams. “And because you're going to be incredible in it. And also because I can't do anything without you.”

Jaemin smiles, pressing a peck to Jeno's skin. “I suppose you're right.”

“You got this,” Jeno murmurs, reaching up to push back some of Jaemin’s sweaty hair. “And we can always change things around if you don't like the way the vocals are arranged. We can figure this out.”

Jaemin nods, feeling more and more soothed under Jeno's touch and with his words. “Okay.”

“You know I'm here for you, right?” Jeno asks, gently caressing Jaemin’s face. “I always have your back. You don't have to feel alone in this, okay?”

“Okay,” Jaemin whispers, heart swelling as he looks into Jeno's eyes. “I love you, Jen.”

“I love you, too,” Jeno murmurs, leaning in to press a sweet kiss to Jaemin's lips.

“There's no one else I'd rather do this with,” Jaemin mumbles against Jeno’s mouth.

“Better not be,” Jeno mutters, smacking at Jaemin’s ass with one hand, then palming at the flesh. “This is all mine.”

Jaemin laughs, wrapping himself around Jeno once again as he pulls him in for another kiss.

“I'm all yours, always.”

Notes:

very high chance you guys will get another story from me before the week ends bc I need to get an au done...nomin canon compliant smut just keeps roping me back in

follow if you cried listening to both sides: @mediumsuh