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Dirty Little Secret

Summary:

Yunho and Seonghwa get down and dirty, only to realize someone is watching them. Yunho invites their intruder to join them. Only the intruder is his stepbrother, Wooyoung.

Notes:

This is just pure filth. Please enjoy

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

Work Text:

Yunho has been edging him for over an hour. Whenever Seonghwa came to the brink of an orgasm, Yunho took it away from him with a smirk. Tears formed in Seonghwa’s eyes and ran down his cheeks. Frustration and pleasure mixed into a salty concoction. Yunho’s pupils dilated at the sight and he leaned down. With the tip of his tongue, he licked the tears away and groaned at the back of his throat. All the while, his thumb circled Seonghwa’s clit delicately.

 

“Shh baby,” he purred into Hwa’s ear as his fingers picked up their pace again. The squelching noises increased in volume, a reminder of all the missed orgasms. Yunho was so mean to him, but Seonghwa loved every single second. He clawed at the sheets, hips meeting the relentless thrust of Yunho’s fingers.

 

“P-please.”

 

A broken sob left his lips when Yunho’s fingers stopped moving again. Seonghwa was going insane. His head thrashed when Yunho applied pressure with his thumb right next to his clit. Giving him pleasure, but not where he needed it most.

 

Through his tear-stained eyes, Seonghwa saw that the bedroom door was ajar. Yunho liked a little bit of danger, but they were alone at home. At least, that’s what Seonghwa thought. Big, round eyes stared back at him and caused his body to freeze. At first, he was paralyzed. An embarrassed flush covered his cheeks before hot pleasure seared through his veins, and a loud moan left his mouth. Yunho’s fingers moved again and the younger one attached his lips to Seonghwa’s neck, leaving red and purple marks in his wake.

 

“Why aren’t you looking at me, baby?” There was an edge to his voice, letting him know he wasn’t amused by Seonghwa’s behavior. Seonghwa gasped, trying to form words through the cloud of lust. In the end, he could only point at the door. Immediately, Yunho’s head spun around, making the peeper panic.

 

“Wooyoung?” Yunho’s voice turned soft and friendly. Still, Seonghwa knew he was planning something. His expression was unreadable.

 

“Y-yeah,” a slightly higher voice answered. Wooyoung had always been shy around Seonghwa, despite his usually boisterous personality. Around Seonghwa, he stuck to formalities and fled the room whenever the older one entered. He would’ve never expected Wooyoung to watch his step-brother and boyfriend be intimate. Has this happened before, and why was he turned on by this?

 

“Come inside,” Yunho ordered, no room to argue in his voice. Seonghwa panicked a little and tried to cover himself up and get away from Yunho. But his boyfriend only winked at him and crooked his fingers, hitting that delicious spot precisely, and Seonghwa crumbled. Shuffling footsteps echoed through the room as Wooyoung entered with a bright red face.

 

“Close the door and lock it.”

 

Wooyoung didn’t hesitate to follow Yunho’s orders. He must’ve known not to disobey Yunho, especially right now. The younger boy turned around and avoided looking at Seonghwa.

 

“Had fun watching my boyfriend fall apart on my fingers?”

 

He thrust his fingers back into Seonghwa’s pussy and made him whimper. Wooyoung stared at his socked feet, turning even redder. His erection pressed against his loose basketball shorts. Smaller than Yunho, but the latter was a monster in that aspect. A fact Seonghwa thoroughly enjoyed.

 

“Answer the question, Youngie!” Yunho warned, his dark eyes burning through his step-brother.

 

“Yes, I had fun.”

 

Wooyoung stumbled over his words. Yunho hummed in acknowledgment and pulled his fingers out of Seonghwa’s pussy. The latter whined at the loss of contact but didn’t dare move from his position. Yunho stood up and walked towards Wooyoung. The poor boy stood rooted in place and stared up at his older brother. Seonghwa feared Yunho might slap Wooyoung. What he didn’t expect was for Yunho to cup Wooyoung’s jaw and pull him into a kiss. Immediately, Wooyoung melted into the kiss, eagerly moving his lips. Any other person would’ve been disgusted by this sight, but not Seonghwa. More slick dripped from his neglected pussy. Their tongues met and Wooyoung moaned. This definitely wasn’t the first kiss between the brothers.

 

Yunho broke the kiss with a grin. A string of saliva connected their lips. Wooyoung’s eyes glazed over with lust and a needy whimper escaped his throat.

 

“Now, Seonghwa knows our dirty little secret, Youngie.”

 

Yunho traced Wooyoung’s reddened bottom lip with his thumb. Wooyoung’s dark eyes turned to Seonghwa, a look of innocence still in them, and Seonghwa wanted to ruin him.

 

“Hyung, what if he-,“ Yunho interrupted Wooyoung with a low chuckle. Seonghwa’s body shivered in anticipation.

 

“Finds us disgusting? I highly doubt that, judging by how wet he is.”

 

Yunho pulled Wooyoung to the bed and forced him to sit down next to Seonghwa’s naked body. At this point, Wooyoung was the only dressed person in the room. Seonghwa should’ve been embarrassed by it all, but he was terribly aroused. He rubbed his thighs together to ease some of the burning pressure, but it didn’t work.

 

Wooyoung gnawed on his bottom lip, still not entirely comfortable with the situation. His painful erection wasn’t helping, either. Yunho took one of his brother’s hands and guided it between Seonghwa’s legs. The younger one’s trembling fingers hesitantly traced over Hwa’s wet slit before they dove into the wet heat.

 

“Told you she was wet, and so eager, too.”

 

Yunho chuckled as Seonghwa pushed his hips forward with a pathetic whine. That wicked grin on his boyfriend’s lips caused more arousal to pool in his stomach. Whatever Yunho had planned, it would be hell and heaven simultaneously.

 

“Such a good little slut.”

 

Hwa moaned, loving the mix of praise and degradation. Yunho let go off of Wooyoung’s hand, not needing to move it any longer. He watched his brother and boyfriend fondly, but something dark lingered in his brown eyes.

 

“Strip!”

 

The command was sudden and Seonghwa wanted to jump into action until he realized it hadn’t been directed at him. Wooyoung did as he was told without hesitation. His clothes fell to the floor and his perfect body revealed itself. He worked out a bit more than Yunho, judging by his abs. Still, he looked so tiny next to Yunho. Like a perfect obedient, he waited for the next instructions. Seonghwa was going to come just from this. His honey skin looked so inviting and unmarked. He hoped Yunho and he would change that soon.

 

Yunho kissed Wooyoung’s shoulder after he petted his head. Wooyoung melted into the touch. Definitely not their first time with each other. There was intimacy and trust in those touches.

 

“Would you do me a favor, Youngie? Eat him out really well. And you slut, don’t come or you’ll get punished.”


The change from Yunho’s soft to stern tone made Seonghwa tremble. He gulped, but nodded in obedience. Wooyoung climbed between his legs, his eyes roaming Hwa’s body shyly. Seonghwa smiled at him, which caused a fresh pink dust to settle on Wooyoung’s cheeks. Adorable.

 

While Wooyoung vanished between his thighs, Yunho went to the bedside drawer and pulled something out. He winked at her before settling down on the bed as well. He wanted to know what Yunho had planned, but forgot everything else when Wooyoung licked up a strip from his hole to his clit. A soft whimper escaped his lips, and he clawed at the sheets. He wasn’t as rough as Yunho usually was, clearly not as experienced, but not horrible.

 

Hwa glanced at Yunho who had moved behind Wooyoung. The latter whined against Seonghwa’s pussy, causing vibrations to trickle up Hwa’s spine. Yunho removed his hand from Wooyoung’s cock to reveal a black cockring.

 

“He’s always a little too eager. Plus, he enjoys it.”

 

Wooyoung nodded in agreement, glass eyes staring up at Seonghwa before he licked Hwa’s clit again. All the edging was finally catching up with Seonghwa and he was closer to the brink than he had expected. His thighs burned deliciously and a tight knot formed in his stomach. Unfortunately, Yunho hadn’t allowed him to come. It was hard to calm himself down when Wooyoung licked and sucked so eagerly. He couldn’t help himself, grasped Wooyoung’s hair and pushed his face deeper into his pussy.

 

“S-so good, Youngie.”

 

The younger brother moaned at her words, the vibrations pushing her even closer to the edge. Obscene slurping sounds filled the room. Seonghwa’s body trembled with the force of holding back his orgasm. Tears started to roll down his cheeks again. Yunho’s favorite sight in the world.

 

“He’s a good baby boy, right? Eating you out so well that you’re crying.”

 

“Yes … ah - so good.”

 

Seonghwa couldn’t help himself and moaned especially load when he realized Wooyoung was humping the blanket. His small cock dragging against the rough sheets, staining the pristine material with pre-cum. The knot in his stomach tightened even further. More tears spilled down his cheeks, and Yunho licked them away with a sadistic grin.

 

“Daddy please,” Hwa begged, voice higher-pitched than usual. Yunho shook his head, causing a frustrated groan to leave Hwa’s lips. A wicked smile graced Yuho’s lips as he continued watching the show. Wooyoung switched between fast, soft licks and slow, hard ones. Hwa was going insane. He could taste his orgasm at the back of his throat.

 

“I can’t,” he sobbed, trying to escape Wooyoung’s mouth so as not to come and get punished. But Wooyoung held her down, working even harder to please. Hwa’s body writhed underneath his hard grip and Yunho’s watchful eyes. With a cry, he finally finished. Liquid squirted into Wooyoung’s waiting mouth and onto the sheets. Pure ecstasy ran through Seonghwa’s veins and he enjoyed it for the moment, knowing his punishment awaited him on the other side. He dreaded opening his eyes and meeting his boyfriend’s disappointed stare.

 

Wooyoung worked him through the aftershocks of his orgasm before Yunho pulled him away. Yunho mustered his brother’s flushed face, unfocused eyes, and pink swollen lip that glistened with Seonghwa’s juices.

 

“You did so well, Youngie. As a present, you’ll get to fuck him. But he needs to be punished first.”

 

They gazed at his sweaty, wrecked body. Two wolves hungry for their prey.

 

“On your knees, slut!” Yunho commanded in a cold tone. Hwa still followed the order despite how tired and worn out he was. His boyfriend’s rough hands kneaded his asscheeks. The only soft touch they’ll feel tonight. Wooyoung sat down in front of Seonghwa.

 

“Open yourself up, Youngie, and watch carefully. This is what you get for disobeying and coming without permission. You better count, bitch.”

 

Seonghwa wanted to hide his face, but that would only make the punishment worse. Sharp pain shot through his body at the first slap.

 

“One.” The pain was excruciating, but it only turned him on even more. Also, Wooyoung provided a show as he fingered himself open. Seonghwa’s pussy began to drip, slick sticking to his thighs as the spanks continued. Wooyoung’s cheeks flushed red when he entered a second finger into his hole. He moaned unabashedly, but made sure not to come. Hwa took every slap with dignity, counting higher. By the time the twentieth spank hit, tears streaked down his face, legs wobbled and Wooyoung had four fingers inside of him.

 

The younger brother kept riding the fingers, moaning without abandon but always stopped before he could jump over the edge. He didn’t even allow himself a dry orgasm. His cock had turned an angry red by now and Seonghwa wanted to lick the pre-cum off.

 

More juices dripped down his thighs, aroused by the punishment and watching Wooyoung. Yunho kneaded his butt softly, leaving kisses on the red handprints that would surely leave a mark in the morning. He kissed up Seonghwa’s spine, a sign that the punishment was over.


“You’ve been very good, baby girl. Taking your punishment without complaint.”

 

The praise made Hwa’s skin prickle with delight. A warm feeling enveloped his heart. At first, Yunho had hesitated to use more female pet names with Seonghwa, but the older continued insisting he loved it. Moments like these, where Seonghwa kissed him with passion and love, reminded Yunho he did everything right.

 

Wooyoung whined at the sight. He also needed attention. Yunho smiled against Seonghwa’s lips as he eyed his brother, who rode his four fingers as if his life depended on it. Wooyoung’s black hair stuck to his forehead. His mouth was slightly agape as continuous moans passed his swollen lips.

 

“Be a good girl and lie on your back while Wooyoung fucks you,” Yunho ordered, but in a softer tone than usual. Hwa turned around, glad to give his wobbling arms and legs a break. The soft sheets cooled his overheated skin. He beckoned Wooyoung to crawl between his legs again. The younger stopped fingering himself and followed Seonghwa’s invitation. He shook just as much as Seonghwa and offered him a weak smile. Seonghwa took Wooyoung’s hands and intertwined them with his as a way to encourage and soothe him.

 

Yunho settled behind his brother and held his hips up. He entered the younger in one swift thrust. Wooyoung’s face contorted, caught between pleasure and pain as he got used to Yunho’s immense size. It was wrong and dirty to watch two stepbrothers fuck and be caught in between them, but it only made Seonghwa wetter. He enjoyed every single second of it.

 

“Go on, Younge. Hwa is all yours.”

 

Seonghwa spread his legs to emphasize his boyfriend’s point. Wooyoung gulped, still hesitant to enter Seonghwa’s dripping pussy. Yunho took Wooyoung’s cock in his hand and led it to Hwa’s opening. Wooyoung’s body trembled and the first tears fell from his eyes as he entered the wet heavenly heat. He wasn’t as big as Yunho, no one was, but satisfied Seonghwa nonetheless. Usually, he needed some prepping, but Wooyoung could slip inside without resistance thanks to all the slick.

 

A broken moan left Wooyoung’s mouth as Yunho pulled out and thrust back inside, slow and hard. It caused Wooyoung to thrust into Seonghwa. Yunho set a slow pace that would drive all of them insane. Wooyoung and Seonghwa moaned loudly, their voices echoing off the bedroom walls. Seonghwa felt bold and pulled Wooyoung down for a kiss. It was uncoordinated due to the thrusting, but filled with passion. Yunho groaned at the sight and fastened his thrusts. The wet sounds of Seonghwa’s pussy and Wooyoung’s ass were obscene, but a perfect symphony combined with their moans.

 

“It’s so easy to wreck him. Do you want your Noona to wreck you?”


“Y-yes, please,” Wooyoung answered, desperately meeting Yunho’s thrusts while Seonghwa’s pussy kept pulling him in. Yunho nodded down at Seonghwa, a devious smirk on his handsome face. Seonghwa tightened around Wooyoung, causing the younger to almost scream. He wrapped his hands around Wooyoung’s legs and forced him to fuck into his pussy harder. Wooyoung screamed when Yunho hit his prostate dead on simultaneously. A dry orgasm rocked through his body, veins popping at his neck. More tears streaked down his flushed cheeks.

 

“Should we allow him to cum, baby?” Yunho grinned down at him, leaving the decision in his hands. The power was exhilarating. No wonder Yunho liked to dominate him.   

 

He thought about it for a second, watching Wooyoung fall apart as his body convulsed. She was close to the edge as well and couldn’t handle any edging anymore. Judging by Yunho’s erratic thrusts, he wasn’t far behind. Wooyoung whined as Hwa combed through his sweaty black hair, massaging his scalp.

 

“Yes, he’s allowed to cum,” He decided with a soft smile. Yunho broke the cockring around Wooyoung’s dick and the younger only needed a few more thrusts for his orgasm to finally hit him. He gasped and hiccuped on his moans. He spilled all of his cum inside of Seonghwa’s pussy, which only increased the squelching noises.

 

“Thank you, hyung. Thank you, noon,” Wooyoung babbled, lost in his orgasmic haze. He kept thrusting inside of Seonghwa, more or less forced by Yunho’s thrusts. Oversensitivy soon hit him and his moans turned into desperate whines, but he knew better than to complain. Seonghwa was so close and seeing Wooyoung come, feeling his sticky seed inside of his pussy only brought him closer to the edge.

 

“Daddy?” He turned to Yunho. Sweat dripped down the older brother’s forehead. He licked his lips, watching them like a wild predator.

 

“Fuck, it’s okay, baby. You can cum.”

 

Seonghwa mumbled several ‘thank you’s, took Wooyoung’s hand and placed it on his clit. The younger understood and flicked Hwa’s bundle of nerves. Yunho’s hand joined the mix and slapped Seonghwa’s pussy, then his thigh. The orgasm forcefully crushed over Seonghwa. He chanted both brothers’ names.

 

Yunho growled at the sight of his two subs lost in bliss and reached his own peak. He spilled inside of Wooyoung’s awaiting hole. The room fell silent, except for their panting. The rocking of the bad had been a steady background noise during their lewd actions.

 

Yunho pulled away first and maneuvered Wooyoung’s lax body next to Seonghwa. The younger one whined and immediately sought physical contact with Hwa. He pulled the younger brother close, cradling Wooyoung’s head against his chest. Yunho left for the bathroom to grab some towels and washcloths. It was Seonghwa’s job to praise and soothe Wooyoung, who was still deep in subspace. He placed kisses all over Wooyoung’s face, making him giggle. Yunho returned and smiled at the cute sight. He carefully cleaned up his lovers before he turned to himself. By the time he was done, Wooyoung had fallen asleep against Seonghwa’s chest.

 

Yunho settled behind Seonghwa, wrapping his arms around his boyfriend’s waist. He kissed down Hwa’s neck, stroking his soft stomach. The atmosphere was relaxed and filled with love. This should be wrong. This shouldn’t have happened in the first place, but they fit so perfectly together. The three of them made sense.

 

“You would make a good mommy,” Yunho mumbled into his hair. He could hear the smirk in his boyfriend’s voice and couldn’t help but smile himself. Seonghwa elbowed him lightly. Yunho laughed against his neck, the most beautiful sound Hwa had ever heard.

 

“You’re okay with this? With Wooyoung and me?” For the first time that night, Yunho’s voice wavered, insecurity seeping through the cracks. Seonghwa turned his head to face his boyfriend and pulled him into a passionate kiss.

 

“Perfectly fine,” he smiled against Yunho’s lips before licking them open.

 

“One thing though.”

 

“What is it?”

 

“I want to fuck Youngie next time,” Seonghwa grinned. Yunho groaned and his eyes rolled to the back of his head. Hwa giggled while Yunho kissed down his neck.

 

“I’ll buy you a big strap,” he promised into Hwa’s ear. A shiver ran down Seonghwa’s spine. He couldn’t wait for the next time.

Notes:

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