Chapter Text
The first time Nanami heard it, he thought he was imagining things.
He was sitting at his kitchen table on a Sunday morning, his newspaper in front of him and his coffee steaming on the table. He liked his Sunday mornings. He liked the quiet, the peace, the absence of anything that could disturb him. He had a whole routine, a ritual that he followed every week, and he didn't like anyone messing with it.
But then he heard it.
A muffled moan from behind the wall, followed by a string of whiny, breathless words he couldn't quite make out. It's coming from the semi next door, the one that was empty for months before it was finally occupied a few weeks ago, but a stupidly friendly tall man who was immediately too loud for Nanami's taste.
He frowned, annoyed. He'd avoided the man from that first day. He'd turned away when he tried to talk to him, he'd ignored his friendly greetings, he'd walked faster when he saw him coming down the driveway, and he'd never once tried to get to know him. The last thing he wanted was a new friend, especially one who was as bubbly and bright as that man.
He'd heard his name, of course. Gojo Satoru. He had to listen to everyone else fawn over him, to hear people talk about how nice and charming and funny he was, and it only made Nanami want to avoid him more. He didn't like people like him, people who were the centre of attention, people who talked too much, people who never stopped smiling. He liked quiet, he liked solitude, he liked people who respected his space and didn't try to invade it.
So, he did his best to ignore his new neighbour and any noise that came from his apartment. But this... this was a different kind of noise, and it was impossible to ignore.
He sipped his coffee, trying to focus on the newspaper, but the sounds behind the wall were getting louder, more desperate, and he couldn't help but listen. The whimpers turned into moans, the moans turned into pleas, and he could hear a deep voice growling something that made the other voice whine even more.
Seriously? On a damn Sunday morning?!
Nanami wanted to yell, to bang on the wall, to tell them to shut up, but he didn't. Instead, he gritted his teeth, put his coffee down, and stood up. He walked into the living room, turned the TV on, and tried to drown out the noises with a news channel. It worked, mostly, but he could still hear them in the back of his mind, the soft whines and the deep growls and the creaking of whatever they were on.
He sighed, rubbing his forehead. They could have at least gone upstairs. In a semi-detached house, who the hell had sex downstairs near the wall attached to their neighbours?! Idiots, that's who.
This was going to be a problem, he realised. He'd lived in this house for years, and he'd never had a neighbour this loud, this obnoxious, this... active. He didn't know what he was going to do, but he knew he had to do something. He couldn't spend every Sunday morning listening to his neighbour get fucked. He just couldn't.
He shook his head, trying to clear it, and went back to his coffee. He had to figure this out, but first, he had to get through the rest of his routine, and he couldn't do that with the sound of Gojo's moans in his ears.
It wasn't just that one time. Oh no, if only. Nanami could deal with a one-time thing, a weird morning, a one-off, but it became a pattern, a routine, a weekly occurrence that made him want to rip his hair out.
Every week, sometimes even during the week, Gojo would bring someone home, and they would fuck like rabbits and Nanami would hear too much. What caught him off guard most when he had gone to bang on the wall only to hear Gojo's voice, pathetic and whimpering, say one word. "Master!!" He was so shocked he stepped back and left the man to it, trying not to listen too closely but well, that was impossible.
He'd thought Gojo was the one he always heard growling. The guy was tall, fit, attractive, charming, and always surrounded by people, so Nanami assumed he was the one taking charge. But no, no, apparently Gojo was the one whining and calling people Master.
It was a shock, to say the least. Nanami had never pegged him for the submissive type. He seemed so... confident, so cocky, so sure of himself, but then again, what did Nanami know? He didn't know the man, didn't want to know him, and yet, here he was, learning way more about him than he ever wanted to.
It wasn't just the word "master" that got to him, though. It was the tone, the way Gojo said it, the desperation and the need in his voice, like he was begging for something he couldn't get enough of. And if the sound of Gojo's solo time after his partners left said anything about it, he wasn't getting what he was begging for. He whined in a similar fashion, his toys not enough for him. Nanami wondered what exactly was going on in that apartment, why Gojo was so needy and desperate, why he couldn't find someone who could satisfy him, but it wasn't any of his business, and he didn't want it to be.
He tried to ignore it, to block it out, to focus on his own life, but it was hard. It was really damn hard. He'd be in the middle of making dinner, and he'd hear the familiar whimpers and moans, and he'd have to stop what he was doing and just... listen. He'd be in bed, trying to sleep, and he'd hear the creaking and the begging, and he'd have to put a pillow over his head to block it out. He'd be in the shower, and he'd hear the sounds of skin slapping and Gojo's voice begging for more, and he'd have to finish his shower as quickly as possible and leave the bathroom before he did something stupid like touch himself to the sound of his neighbour getting fucked.
It was maddening. It was infuriating. It was... distracting.
And the worst part? He couldn't stop thinking about it. He'd be at work, trying to focus on a project, and he'd remember the way Gojo had said "master," and he'd get lost in thoughts of what it would be like to have someone like that, someone who would look at him like that, who would beg for him like that.
It was ridiculous, really. He didn't even like the man, and yet, here he was listening to him have sex and getting turned on by it. It was a mess, and he needed to fix it, to put a stop to it, to do something before he lost his mind completely.
He'd tried talking himself out of it, telling himself that it was none of his business, that he should just ignore it, that it would pass, but it had been a month, and it hadn't passed. If anything, it had gotten worse, more intense, more frequent, and Nanami was at his breaking point.
He'd had enough. He was going to do something about it, even if it meant confronting Gojo, even if it meant making a scene, even if it meant letting the man know exactly how much of an asshole he was being. He didn't care. He just wanted it to stop, and he was going to make it stop, one way or another.
He wasn't sure how he was going to do it, but he knew he had to. He couldn't keep living like this, couldn't keep listening to his neighbour's sex life, couldn't keep pretending it didn't bother him. It did bother him, and he was going to fix it, no matter what it took.
So, he made a plan, a simple but effective plan, and he was going to see it through, even if it meant stepping out of his comfort zone, even if it meant talking to the one person he'd been avoiding for weeks.
He was going to knock on Gojo's door, and he was going to tell him to shut the fuck up, and that was that. He didn't care what happened after that, as long as the noise stopped, as long as he could have his quiet, peaceful life back.
It was a good plan, a solid plan, and he was going to stick to it. At least, that's what he told himself.
Until the day he actually knocked on the door, and everything went to hell.
***
Gojo opened the door and both men were completely shocked for different reasons; Gojo clearly not expecting his grumpy neighbour, and Nani not expecting to see Gojo in a tiny pair of shorts, a puppy's tail buttplug, with his hair a mess with ears pinned in, and collar around his neck.
"Oh," Gojo said, blinking in surprise, his hand still on the door handle. "Um, hi?"
Nanami stared, his mind going blank for a moment. He'd been ready to yell, to tell Gojo off, to make him shut up, but now… now he couldn't think of anything to say. He just... stared, his eyes taking in the sight in front of him, the way Gojo's cheeks were flushed, the way his chest was heaving, the way his lips were slightly swollen like he'd been biting them.
"I... uh..." Nanami cleared his throat, trying to get his thoughts together. "You expecting someone?" he finally managed to say, his voice gruff.
Gojo blinked again, then smiled, a sheepish, almost shy smile that Nanami had never seen on him before. "No," he said, shaking his head. "I mean, I was, but they cancelled last minute. I was just, um, though maybe they’d changed their mind."
Nanami nodded, his eyes still taking in the sight of Gojo in his puppy get-up. He'd never seen anything like it before, never been this close to someone who was so clearly into something like this, and it was... interesting, to say the least.
Gojo blushed darker and grabbed a coat from the rack beside him and covered his lower half breaking Nanami out of his weird fascination.
"Right," he said, not sure what else to say. "Well, uh, I'll just... go."
He turned to leave, but Gojo stopped him, his hand on Nanami's arm. "Wait," he said, his voice soft, almost hesitant. "Did you... did you need something?"
Nanami hesitated, his mind racing. He could just walk away, pretend this never happened, go back to his life, but... but he was curious now. Curious about Gojo, about what he was into, about why he was so desperate for a "master" who could satisfy him. "I just... wanted to ask you something," he said, his voice low.
Gojo raised an eyebrow, his smile turning a little mischievous. "Oh yeah? What's that?"
Nanami took a deep breath, trying to gather his courage. "I've been hearing you," he said, his eyes locking with Gojo's. "You and your, uh, partners. I've been hearing you call them 'master'."
Gojo's cheeks flushed even more, his eyes widening slightly. "Oh," he said, his voice barely a whisper. "You, uh, you heard that, huh?"
Nanami nodded, his heart pounding in his chest. This wasn't the plan. He'd planned to tell Gojo to shut the fuck up and then just go home, but what he heard from his mouth was the exact opposite.
"Say it now."
What was he doing?!
"What?" Gojo was a little taken aback, his eyes wide.
"Call me master."
He had to be insane.
There was no other explanation. No sane man would be standing here, asking his neighbour to call him master, especially when he didn't even like him. But here he was, his heart racing, his body heating up, his mind completely gone.
Gojo stared at him for a moment, his expression unreadable, and then he smiled, a slow, knowing smile that made Nanami's stomach flip. "Yes, master," he said, his voice sweet and submissive, his eyes dropping to the floor.
Nanami swallowed hard, his body reacting in ways he didn't expect. He'd never done anything like this before, never been called master, never had someone look at him like that, like they wanted him to take control, to dominate them, to own them. It was... intoxicating.
He stepped closer, his hand reaching out to cup Gojo's cheek, his thumb brushing over the soft skin. "Good boy," he murmured, the words feeling foreign but right on his tongue.
Gojo shivered, his eyes closing as he leaned into Nanami's touch. "Thank you, master," he whispered, his voice trembling slightly.
Nami's hand moved to the back of Gojo's neck, his fingers tangling in the soft strands of his hair. "Do you want me to come in?" he asked, his voice low and rough.
Gojo nodded, his eyes opening to meet Nanami's gaze while dropping the coat. "Yes, please, master," he said, his voice full of need and desire.
Nanami stepped inside, closing the door behind him. "I don't believe puppies can walk on two feet, though?" he questioned, raising a brow.
Gojo gasped, his eyes wide as he immediately dropped to the ground. Nanami couldn't help the way his lips turned up at the corners, enjoying the way Gojo just obeyed him without question. "Good puppy."
His place was nice, clean and modern, with a big open-plan living area and a kitchen that was twice the size of Nanami's. There were a few toys scattered around, a leash hanging on a hook by the door, and a collar on the coffee table, and Nanami realised that this was Gojo's life, his world, something more than just a kink.
He sat down on the couch, his legs spread wide, and looked down at Gojo, who was still on the floor, his eyes locked on Nanami's. "Come here," he said, his voice firm.
Gojo crawled over to him, his movements graceful and fluid, and knelt between Nanami's legs, his hands resting on his thighs. "Yes, master?" he asked, his voice soft and sweet.
Nanami reached out, his hand stroking Gojo's hair, his fingers tracing the line of his jaw. "I'm going to make you stop those noises behind the wall," he said, his voice low and rough. "Teach you how to be good and quiet." He didn't know where the words were coming from, didn't know why he was saying them, but they felt right.
Gojo's breath hitched, his eyes fluttering closed as he leaned into Nanami's touch. "Okay, master," he whispered, his voice full of submission. "I'll be good."
Nanami's other hand moved to Gojo's chin, tilting his head up so he could look into his eyes. "Open your mouth," he ordered, his thumb brushing over Gojo's lower lip.
Gojo obeyed, his mouth opening wide, his tongue darting out to wet his lips. Nanami smirked, his thumb pressing down on Gojo's tongue, making him moan softly. "Good boy," he murmured, his eyes dark with desire. "You're going to be a good puppy for me, aren't you?"
"Yes, master," Gojo breathed, his eyes pleading. "I'll be so good for you."
Nanami's cock throbbed in his pants, his body reacting to the sight and sound of Gojo so willing and submissive. He'd never felt this way before, never wanted someone this much, and it was overwhelming, but in the best way possible. He pulled his thumb away, his hand moving to the back of Gojo's head, his fingers gripping his hair tightly. "Show me," he said, his voice commanding. "Show me how good you can be."
Gojo didn't need to be told twice. He moved forward, his hands working to undo Nanami's belt and pants, his eyes never leaving Nanami's. However, Nanami raised an eyebrow again. "Puppies don;t have hands." He watched Gojo's eyes widen, the guy clearly so desperate to please Nanami, and it was a damn good feeling.
"Of course, Master." Immediately, his hands went behind his back and he bent down to use his mouth to pull down Nanami's pants. Nanami had to wonder how many times he'd done this to have such a quick reaction time, but it was best not to think about that, not when this was happening.
Gojo finally got Nanami's cock free and he whined softly, nuzzling against the thick shaft. "So big, Master," he said, his voice full of awe.
Nanami's hand tightened in Gojo's hair, his other hand resting on the couch beside him. "Lick it. Show me this puppy knows how to enjoy a bone."
He didn't know if what he was saying was correct for this kind of play, but Gojo clearly liked it, because he moaned softly, his tongue darting out to lick the length of Nanami's cock. He started at the base, his tongue flat and wide, lapping at the skin like it was the best thing he'd ever tasted. Nanami watched, his breath catching in his throat as Gojo worked his way up, his tongue swirling around the head, his lips closing around it and sucking gently.
It was slow, and soft, and adoring, something Nanami never expected from someone like Gojo, but it was perfect, exactly what he needed. He groaned, his head falling back against the couch, his hips pushing forward slightly to the edge of the couch.
Gojo took that as encouragement, his mouth opening wider as he took more of Nanami's cock into his mouth, his tongue still working, his lips still sucking. Nanami's hand tightened in his hair, careful not to dislodge the puppy ears, his hips moving in a slow, steady rhythm, his eyes closing as he lost himself in the feeling of Gojo's mouth on him.
He could hear the soft, wet sounds of Gojo's mouth, could feel the warmth and the wetness, could smell the faint scent of Gojo's shampoo mixed with his own arousal, and it was all too much, too good, too perfect.
"Such a slutty pup," he rumbled more to himself than the man between his legs. But Gojo only whined and shook his butt a little, making Nanami notice the tail again.
He smirked and leaned over the white-haired man and grabbed it, growling as Gojo moaned around his dick when the plug moved inside him. "You like that, puppy? Like having your tail pulled?"
Gojo nodded, his mouth still full of Nanami's cock, his eyes looking up at him through long white lashes, full of submission and need. Nanami grinned, his hand moving to the base of the plug, his fingers twisting it, making Gojo moan again.
"Good puppy," he murmured, his hand pushing Gojo’s head down further, his cock hitting the back of Gojo's throat. "You're going to take it all, aren't you?"
Gojo's eyes watered, but he nodded again, his hands on the floor now to support himself, his mouth still working on Nanami's cock. Nanami could feel his release building, his body tensing, his breath coming in short, sharp gasps.
"Swallow it all," he commanded, releasing the tail and his hand tightening in Gojo's hair. "Don't spill a drop."
Gojo's eyes closed, his mouth moving faster, his tongue working harder, and then Nanami was coming, his body shuddering as he spilt down Gojo's throat. Gojo swallowed it all, his mouth still moving, still sucking, still trying to get every last drop.
When Nanami finally pulled his head back, Gojo looked up at him, his eyes glassy, his lips swollen, his face flushed. Nanami smiled, his hand moving to cup Gojo's cheek, his thumb brushing over his lower lip. "Good boy," he murmured, his voice soft and satisfied.
Gojo leaned into his touch, his eyes closing, a small smile on his face. "Thank you, master," he whispered, his voice hoarse.
Nanami chuckled, his hand moving to the back of Gojo's head again, pulling him closer. "Turn round and show me that pretty tail of yours." He said, helping Gojo manoeuvre so his ass was facing Nanami while on all fours between his legs.
Once he was settled, Nanami took a moment to admire the view. Gojo's ass was perfect, round and firm, the tail plug sitting snugly in a specially cut hole in those sinfully tight little shorts. The shorts looked like they were painted on, showing off every curve and dip of Gojo's tight body.
He spanked the man's ass, watching as the skin turned red and listening to Gojo's yelp. He did it again, and again, loving the way Gojo pushed his hips back, begging for more without words. "Be quiet, puppy; or did you forget why I'm here?" Nanami asked, spanking him again for good measure.
"Sorry, master," Gojo whispered, his voice muffled by his hand as he kept his ass up, face down to the floor, presenting himself to his neighbour. "I'll be good."
"Good," Nanami replied, his hands now gripping Gojo's hips, pulling him closer. He reached for the plug, beginning to fuck it into Gojo's hole.
The sounds that came out of Gojo's mouth were obscene, moans and whimpers of pleasure, his hips moving back to meet Nanami's thrusts, the wet sound of his hole being fucked by the toy filling the room.
"Quiet." Nanami growled. "Or I won't give you my cock."
Gojo's body stilled instantly, his mouth closing, his breathing heavy. Nanami smiled, his hand pulling the plug out so he could slide the shorts out of the way and push the plug back in. "If you want to beg, wag your tail for me." He watched, his eyes dark with lust, as Gojo tried to move his hips and make the tail move rather than making any whining sounds.
It was pathetic, really, the way he was trying so hard to please Nanami, his body desperate for more. And Nanami loved it. He loved the control, the power, the way Gojo was so willing to submit to him. He pulled the plug out again, this time setting it aside and lining his cock up with Gojo's hole.
"Ready, puppy?" he asked, his voice rough.
Gojo nodded, his back arching slightly, his body begging for it. Nanami pushed in, the tight, wet heat of Gojo's hole making him groan, his hands gripping Gojo's hips tightly.
He pulled Gojo back on his hands and knees until he was almost awkwardly close to the sofa for his long legs, but he was right up against Nanami, so the blonde could bury himself balls deep in that tight ass while still sitting on the couch cushion. "Fuck. I thought you'd be loose, the times I hear you moan for men." He groaned. "You're so tight."
Gojo arched himself further, pushing his ass back between Nanami's legs as the blond’s strong hands settled on his hips. Nanami didn't move his own hips, content to sit and watch his puppy move.
"Master feels so good," Gojo whined loudly.
"Shut up." Nanami grabbed Gojo's hair and shoved his face into the carpet. "I said be quiet, or I won't keep fucking you."
It was hot, to see the way Gojo's body reacted to his words, the way he pressed his chest to the floor, the way his hips moved faster.
"Come on, puppy," he growled, his hand moving to the collar around Gojo's neck, pulling it back slightly, arching the tall man like a bitch in heat. "Pant for me. Tongue out. Show me how much you love this." He couldn't see Gojo's face properly from this angle but he could imagine the tongue lolled out, the huffs of breath from the man beneath him trying to stay quiet with his mouth open.
He could feel the effect, though. Gojo was tightening around him.
"If you want to make a sound, you can bark when you cum," Nanami offered, standing a little so he could pound down into the man's ass harder and faster.
Gojo's body tensed, his back arching, his hips moving erratically as he came, his cum splattering on the carpet below him. He yipped and barked, the sounds stupidly cute and hot, and it sent Nanami over the edge. He came hard, his body shuddering as he filled Gojo with his release, his hand still holding the collar, the other gripping his ass cheek.
He collapsed back onto the sofa, pulling out of Gojo with a wet squelch. The man stayed in position for a moment before slowly slumping to the ground, his chest heaving, his body spent.
Nanami looked down at him, a satisfied smile on his face. "Good puppy," he murmured, his hand reaching out to stroke Gojo's slightly upturned ass. "You did so well."
Gojo looked up at him, his eyes hazy with pleasure, a small smile on his face. "Thank you, master," he whispered, his voice hoarse.
Nanami chuckled, leaning back on the sofa, his body relaxed and sated. "I'll give you a choice, pup." He looked at the man still trying to catch his breath on the floor. "You stay absolutely that quiet while your other 'masters' come over... or you can defy what I’ve just taught you and be loud," He grabbed Gojo's hair and pulled his face up to look at him. "But if I hear even a whine, whimper, or yelp through the wall, I'll have to come and punish a loud dog. Understand?"
Gojo nodded eagerly, his eyes shining with excitement. "Yes, master," he said, his voice full of happiness.
"Good." Nanami let go of his hair and stood up, pulling his pants back up. "I'll see you soon, pup."
Gojo watched him go from the floor, his body still trembling with the aftershocks of his orgasm, his mind already thinking about the next time Nanami would come over, the next time he would get to be his puppy, his submissive, his.
And as Nanami walked out of the door, he couldn't help but smile, already looking forward to the next time he would hear those sweet, submissive sounds coming from Gojo's apartment, knowing this time, they would be for him, not whoever he brought back, because Gojo would know that making those noises would have Nanami's punishment as a guarantee.