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Osomatsu groaned at the sight in front of him. Ichimatsu was on his knees, lapping at his cock. The other brothers had gone out for the day, leaving them alone in the house. Ichimatsu had decided to stay in with his older brother rather than wander the alleyways looking for cats. Unless he had let some in the house again; Osomatsu thought he might’ve seen some shadows moving in the corner earlier, ones that hopefully had left once their activities started. Though no way Osomatsu cared enough to stop a blowjob to check. He wasn’t sure Ichimatsu cared at all—it wouldn’t surprise him if Ichimatsu even got off on them watching. Osomatsu knew his lil bro had some off-the-wall-kinks, even for him.
That train of thought was broken as Ichimatsu started getting more into it, taking Osomatsu all the way into his mouth. Shit, his brother could deep throat like a pro. Ichimatsu went to tug at the hands that were fisted in his hair, and Osomatsu knew it meant he wanted him to pull harder, not to stop. No, Ichimatsu would gladly let him pull ‘til he had yanked out chunks of hair and would come all the harder for it. They had to put a limit on the hair-pulling actually, once Ichimatsu started losing noticeable amounts of hair.
Not that Ichimatsu particularly cared about his appearance; he seemed rather content to display himself as the trash he was. Osomatsu didn’t care much either; essentially the problem was that they’d get reprimanded by their other brothers for it. Well, mainly Choromatsu. He was the one who put his foot down when the activities between them got too wild. They didn’t tend to go as far when they fucked around with the others but their risky tendencies seemed to amplify when they got together, Osomatsu willing to indulge more of Ichimatsu’s kinks than anyone else.
Not that the other brothers couldn’t be kinky. They saw potential in Totty but it was hard to get it out of him, and he would shy away from things if it got too gross. Jyushimatsu was up for anything, but Ichimatsu didn’t want to make him uncomfortable (Osomatsu thought this was bizarre, what in the world could make Jyushimatsu uncomfortable?). His natural roughness was enough to satisfy Ichimatsu’s pain kink, anyway. Karamatsu would unwittingly agree to try new things but he’d often chicken out at the last minute. This had once led to an incident where they’d inexplicably heard a rare shout from Ichimatsu ring through the house of “Stop fucking blueballing me, Shittymatsu!” It had ended with Ichimatsu marching into the living room half-naked, abruptly grabbing Jyushimatsu, and storming back out the door with a hard slam.
Choromatsu… they were working on Choromatsu. It was hard to get him to loosen up and he’d exasperatedly draw up limits whenever he heard about a new crazy thing they got into. He had lists. Lists they mostly ignored but had to grudgingly concede to sometimes, not that they’d ever admit he was right. They hoped their own depravity was rubbing off on him just as much; it wasn’t right for him to act like he was better than them, after all.
Osomatsu tugged harder at Ichimatsu’s hair, getting a little noise out of him. He moaned at the feeling of it vibrating on his cock. Ichimatsu didn’t make much noise during sex; he was kind of boring in that aspect for how extreme he was in others. You could draw it out of him if you hurt him enough though. Or if you were drilling into him really, really hard. Which was what Osomatsu wanted to be doing right about now. Mouths were great but nothing could beat the sweet, wet heat of an omega’s ass. He started to salivate just thinking about it.
“Hey Ichi,” Osomatsu said, tugging Ichimatsu’s head up. Ichimatsu’s eyes lazily focused on him, tongue still teasing at his cock. Drool dribbled down his chin freely, gross as it was hot. “Ichiii, lemme fuck you.” Ichimatsu ignored him, focusing on getting Osomatsu’s cock back in his mouth. He moved forwards abruptly, making Osomatsu yank at the hair he still had a grip on, Ichimatsu’s eyes crossing for a few seconds in bliss at the pain. He pulled Osomatsu the rest of the way towards him by his thighs.
Huh, Ichimatsu was really cock-hungry today. Osomatsu went to smack at Ichimatsu’s head. “C’mon Ichi-matsu! Lemme fuck you, Ichimatsu!” Osomatsu started punctuating Ichimatsu’s name with thrusts—which might have been counterproductive, but no one had said Osomatsu was smart. “Let me fuck you, knot you, Ichi. C’mon, you love it! You love my knot, don’t you, Ichimatsuuu-chan?”
Ichimatsu stopped sucking at that, letting his mouth slide off Osomatsu’s cock. He stared at the base of it for a while, where the knot would form. Then he looked away, mumbling something.
“Eh? What was that, I didn’t hear you.” Osomatsu could see Ichimatsu tense up slightly. Huh, what had suddenly made his bro nervous. A grimace crossed Ichimatsu’s face as he repeated it louder, trying to grit it out but trailing off at the end, not getting it out completely. But Osomatsu heard him this time.
“Knot in my mouth.”
Osomatsu’s mind blanked a little. The first thoughts in his head being ‘hot’ and ‘hell YEAH’ but then more reasonable ones creeping in (that sounded suspiciously like Choromatsu), of—wait, isn’t that dangerous, didn’t some guy die from that. He voiced this out loud. “Didn’t some guy die from that.” Yeah, he remembered it now, some news report that all six of them had watched together, something about how some dude had died choking on a dick. All of them had laughed hysterically at it. Though thinking about it, Ichimatsu had been pretty quiet during that. Not that it was usual for Ichimatsu to be quiet. Was that where he got the idea from though… had he been thinking about it since then…?
“It’s fine.” Ichimatsu replied. He had been trying to work up the confidence to ask for this for a while. It wasn’t the weirdest thing he’s asked for, but it was potentially the most dangerous because of the possibility of asphyxiation. God though, suffocating on his brother’s cock. What a way to go. He could die happy, though he hated himself for the thought. Not that he was intending to die, not from this. There was a risk but Ichimatsu had done his research. Of course, most of the internet had warned against doing it; the forums he clicked on talking about how unrealistic the porn was, how it was always camera angles and photoshop. But digging deeper he had found some useful information. Most suggested having knot-dampening shots on hand if you really were intent on doing it (which he didn’t. It wasn’t exactly over-the-counter stuff, and he didn’t want to scare Osomatsu off with those. Not to mention his own phobia of needles...), or to leave it to the trained professionals. What he’d gathered was that it was risky, but it was possible. Which was the only verification he’d needed, really.
He knew it would take a few minutes for him to completely suffocate, if it went that far. Though he didn’t think it was likely. Even though Osomatsu was an alpha and alphas usually had huge dicks, Osomatsu… wasn’t particularly well hung. None of them were. True, the alpha brothers had bigger dicks than the betas and omegas, but they were all a bit below average. The fact of the matter was that Osomatsu wouldn’t be able to get far enough down Ichimatsu’s throat to really cut off his air supply. It would give him an incredible high though, being choked from the inside-out.
Besides, neither of them were in heat. Osomatsu’s knot wouldn’t expand to its full size without the influence of heat pheromones, and it would go down faster—a few minutes rather than the ten to thirty of a full heat. It was fine.
Thankfully he didn’t have to explain any of this to Osomatsu. He wasn’t the type to ask too many probing questions, usually being down for whatever weird or dangerous thing that was suggested. Ichimatsu didn’t think he’d be able to work up the courage anyway, if Osomatsu asked. Good thing Osomatsu was the type to charge headfirst into a situation like an idiot. Heh. He loved his brother’s brash stupidity, really. It was impressive. And good at a time like this.
So, the conversation went:
“You sure?” Osomatsu asked.
Ichimatsu nodded.
That was the end of that.
“Okay, wow.” Osomatsu gulped, looking down at him, expression a mixture of trepidation and lust. Ichimatsu stared back for a moment before he had to look away, the eye contact overwhelming. He shifted his attention to the cock that was being nudged between his lips. This, Ichimatsu could handle, opening up easily.
Osomatsu eased back in, moaning as he started thrusting again. Ichimatsu urged him on, hands pulling at his thighs to make him go deeper. Mmm, he was going back to the place he was at before, the feeling of a cock roughing up the inside of his mouth, dipping into his throat. It was luxurious, the taste, the weight of it on his tongue. He was regaining the high he had, his eyes rolling back at the feeling. It was so good. He got shorter of breath the longer it went on, and soon he’d have Osomatsu’s knot cutting off all his air. He groaned at the thought of finally having that fantasy fulfilled.
Osomatsu’s hips started stuttering and Ichimatsu prepared himself for him to come, but, “Wait—wait,” Osomatsu was stopping his thrusts. He wasn’t quite able to completely, hips still twitching in shallow motions into Ichimatsu’s mouth. Ichimatsu focused his eyes enough to glare at him. Ugh, what was happening now. Did Osomatsu start second-guessing it after all.
“Uh,” Osomatsu finally managed, pulling out. His hand hovered awkwardly over his dick, wanting to stop himself from thrusting back in but not wanting to touch it or else he’d start jerking off. His gaze remained fixated on Ichimatsu’s mouth. “Uh… dude, what about your teeth. I’m not into pain like you. Well, not that kind of pain.” He couldn’t deny the fact that he liked being kicked around a little. Nowhere near the levels Ichimatsu was into though—teeth chomping down on his cock did not sound fun.
Ichimatsu quietly let out the breath he had been holding. Osomatsu wasn’t stopping; he was just worried about his teeth. Okay, this Ichimatsu had prepared for. His hand went to the pocket of his hoodie, pulling something out and holding it up. It was a ring gag.
“We’ll use this.” Ichimatsu said, trying to maintain a quiet, indifferent tone even though he felt anything but inside.
Osomatsu sucked a breath in and his hand went to touch the gag. “You really had this planned out, didn’t you…” He stuck his fingers into the hole, unable to resist fiddling with it.
Ichimatsu shrugged. Better for Osomatsu to think that than the truth, which was that Ichimatsu had been carrying it around for weeks, too nervous to ask for it up until now. He pulled it away, opening his mouth and slipping it inside, reveling at the stretch as he bit down around it. The gag was composed of a solid metal ring underneath a layer of leather, with straps to secure it. He pulled them behind his head, slipping the notches to just the right amount of tightness so it wouldn’t slip. He resisted the urge to tighten it more, knowing it would get uncomfortable too soon and give him a headache, which wasn’t the kind of pain he was after.
He flicked his tongue at the ring, tracing the circle and wetting his lips. Not that they’d be dry for long. It was impossible not to drool with the gag in. It felt odd having his mouth open this wide, his tongue hanging around uselessly. He looked up at Osomatsu, finding that he had been staring hard at him. Ichimatsu’s hands fell limp to his sides awkwardly, suddenly self-conscious. He kind of wished they had been bound behind his back so he could have more control taken away, to stop him from overthinking everything. Maybe next time. One new kink at a time, a rule on the list Choromatsu drew up for them. It seemed like a good idea to listen to it, for once.
Osomatsu touched his thumb to the side of Ichimatsu’s mouth, feeling at the gag between his lips. He dipped it into his mouth to stroke at the soft inside of his cheek, contrasting it with the hard leather. Ichimatsu’s tongue went to lick at it, breaking Osomatsu out of his trance.
“Um. Is this really okay.. You won’t be able to breathe at all…” Osomatsu seemed to be realizing just how completely he’d be plugging up Ichimatsu’s mouth. How dangerous this had the potential of being.
That’s the fucking point… Ichimatsu wanted to snap. He hadn’t expected Osomatsu to ask so many questions, that’s why he went to him for this. Ichimatsu nodded at him, glaring. There was no way he was going to attempt to talk like this. If his mouth wasn’t being held open by a gag he’d bite at Osomatsu’s fingers right now. Or his cock. He glared at Osomatsu harder, trying to tap into that odd telepathy they sometimes shared. Just do it, you fucker. Ichimatsu knew his brother was a little afraid of him sometimes and he’d use it to his advantage when he could.
Annoyingly, Osomatsu still didn’t take the hint. Ichimatsu was glad his hands were still free now. He grabbed at Osomatsu’s thighs, pulling him closer. He’d fuck himself on Osomatsu’s cock if Osomatsu didn’t do it himself. Thankfully Osomatsu snapped out of it and went to press his cock inside. He paused once he was all the way in, slipping a finger alongside to test the fit. There was about a finger-worth’s of space he could slip along his cock, though it would be a bit snug against the base of his knot when it formed. He was unable to stop himself from wiggling the finger around inside, teasingly, “Wow, you’re so open, Ichimatsu.”
Ichimatsu moved his tongue around as much as he could, trying to shove at the finger to get it to stop. He didn’t feel like playing games right now. He glared impatiently and tugged at Osomatsu’s thighs. He’d waited long enough; he wanted to get back to the face-fucking already. One hand went up to pinch at Osomatsu’s ass, making him yelp.
“Okay, okay!” he took the finger out, hands going back to Ichimatsu’s hair. He got a grip on it around the strap of the gag, pulling at it in revenge but knowing it would just turn Ichimatsu on more. Ahh, it was hard punishing your lil bro when he got off to anything you did to him. He started to thrust again, grinning at the sensation. “Mm, it feels different~ you’re really drooling everywhere, haha.”
Of course Osomatsu would keep chatting. Ichimatsu couldn’t just tell him to shut up and fuck him with his mouth gagged, so he dug his fingernails into Osomatsu’s ass, causing the thrusts to stagger. Osomatsu threw a sour look down at Ichimatsu but he did shut his mouth. He adjusted his hands in a better grip and started fucking Ichimatsu harder on his cock, using his head like a toy. He didn’t have to worry about triggering Ichimatsu’s gag reflex; that had been trained out of him ages ago. It had to be for someone who regularly took it from Jyushimatsu.
This was good because it meant Ichimatsu could really enjoy it without having to stop to vomit. Mm, the slide of cock against his tongue, the pressure of the ring against his teeth, holding his mouth open so he didn’t have to but at the same time putting a painful strain on his jaw. The drool he couldn’t swallow continuously dripping out of his mouth and down his shirt. He really should’ve taken it off before they started. He had a bad habit of leaving his clothes on during sex. Not that he was the only one; most of their clothes were disgustingly filthy. They really were six gross horny NEETs.
Ichimatsu couldn’t do much but be a willing hole for Osomatsu’s cock in this position. He had given a halfhearted attempt at technique at first but quickly gave up to let Osomatsu hammer away at him. Ichimatsu’s nose was mashing up against Osomatsu’s crinkly, unwashed pubes with each thrust. It was rank. Disgusting. It was so fucking good. Tears were starting to pool at the corners of his eyes, not from pain or anything. It was just—overwhelming. His nose started dripping snot too, Osomatsu’s cock in his throat making him choke up faster. It added to the high really, making it harder to breathe. He could taste the precome Osomatsu was producing but couldn’t work his mouth enough to swallow it, not while Osomatsu was thrusting into him. It slid out of his mouth with the drool and he was a little disappointed at the loss. There’d be a whole lot of it soon though, when Osomatsu finally blew.
Unsurprisingly, it didn’t take long for Osomatsu to knot, his thrusts stuttering as he ground up against Ichimatsu’s face, instinctively seeking out a warm hole to breed. Osomatsu whimpered pathetically on top of him, hands frantically rustling through Ichimatsu’s hair as his knot expanded and he came. It... was a task to swallow all of the come. It was shooting straight down his throat, but there was so much of it. He found that he couldn’t really work the muscles in his mouth with the knot taking up all the space either. The pressure of it, holy shit. It felt like it was pushing up at his brain through his mouth, an expanding balloon muffling his thoughts. Crap, it was really cutting off his air—it was nearly impossible to breathe. The come kept flooding his mouth; alphas came a lot. He could usually take it but it was hard to get a handle on it like this. There was just—too much.
He suddenly missed a beat and was seizing around Osomatsu’s cock, choking hard in a muffled coughing fit, which must’ve felt—interesting for Osomatsu—who was really squirming around now. Ichimatsu thought he heard him saying something but couldn’t really concentrate on that—there was so much come. Oh god, it was coming out of his nose. Shit. He was actually choking really, really badly, he was gonna pass out. He was—gonna die. He was so fucking hard.
Had he come already? He wasn’t sure. It was too much. He had no idea what was happening with the rest of his body, where his hands were. He should know where his hands were, shouldn’t he? All he could feel was the intense pressure in his head and the burning in his lungs. He could vaguely hear Osomatsu saying something but it sounded like it was coming from far away, like he was underwater. Was this what drowning felt like? He was suffocating, deliciously. He couldn’t tell if his mind was blanking from the euphoric high or if it was—if he was—
Everything went black.
Ichimatsu came back all at once, sputtering and coughing while desperately gasping in breaths. He immediately started vomiting, hearing a “Shit!” as the world shifted dizzyingly and he was turned over towards the floor. He was there for a while, gagging on vomit while his body simultaneously tried to empty itself and suck in air. He was burning everywhere—his lungs, his nose, his throat. He was wheezing and vomiting come and the remnants of whatever he had eaten that day, his snot and tears mixing into it. His jaw ached and his mouth was weakly hanging open as the taste of bitter acid dripped down his tongue. His teeth felt like they had been yanked out of place. The gag must’ve been harshly removed when—when Osomatsu gave him CPR? Did Osomatsu even know CPR? Where had he learned to do that.
The situation slowly came back to him. Shit, he must’ve passed out on Osomatsu’s cock. He was becoming more aware of his surroundings, noting one of Osomatsu’s hands was—petting him on his shoulder, the other solid under his chest; presumably holding him up so he wouldn’t fall into his own vomit. Not that he wasn’t covered in it anyway. It was weakly drooling out of his mouth while he shuddered and coughed, his body trying to expel the rest of the moisture from his lungs. The acidic smell was strong in his nose and he wished he could gather enough energy to blow it. He could breathe through his mouth now, at least.
His wheezing eventually died down and he was moved again, Osomatsu pulling him away from the puddle and placing his head on—what he guessed was Osomatsu’s chest—he was still a bit disoriented. Ichimatsu realized he must’ve vomited on his shirt as well, feeling a wet patch on the neck of it. Thinking about it, maybe in Osomatsu’s mouth too—his face had been on his when he woke up, after all. He turned to the shoulder where it was cleaner and took the chance to wipe his nose. The shirt was ruined anyway.
Osomatsu went to pet at his hair. It was gross as it was comforting, Osomatsu spreading the sweat and other fluids around. They were absolutely filthy and would probably have to burn this set of clothes. Maybe set fire to the whole room. Todomatsu really had the right idea with that.
He leaned his forehead onto Osomatsu’s shoulder, still dizzy but feeling more steady now. His vision hazily came more into focus and he vaguely noted Osomatsu’s cock under him. Of course that would be the first thing he saw. It was red and puffy at the knot and still a little engorged. Ouch. Osomatsu must’ve yanked it out before his knot went down. That had to be way worse than dick chafe, and Osomatsu wasn’t into that kind of pain. He found he was strangely a little touched that Osomatsu had done that for him, though he supposed it was reasonable to assume that even a sex-crazed maniac like Osomatsu wouldn’t actually let anyone choke to death on his cock.
He dully stared at it for a while, not really feeling up to moving. The petting was really calming him, he hated to admit. Finally, he managed the energy to move his head up from Osomatsu’s shoulder to glace at him. There was snot and tear tracks on his face. Huh. Ichimatsu must have really worried him after all.
Osomatsu noticed his shift and his hands went to push back at Ichimatsu’s shoulders, taking a good, long look at him. He started sniffling, and crushed him into a hard hug. Which was quickly released when Ichimatsu started wheezing again. Osomatsu’s hands started patting him down randomly and coaxed him onto the floor, holding onto him as he flopped down. One arm slipped under Ichimatsu’s head for him to rest on. He stared at Ichimatsu lying next to him, his other hand going to pet at his hair again, brushing it out of his eyes and trying to fluff it back out from where it was matted against his head. Ichimatsu could see the pool of vomit out of the corner of his eyes; they should really clean that up before it seeped into the floorboards. Not that he really felt like moving. Oh well. There were a million stains in it already, what was one more.
It was nice, lying here, Osomatsu’s hand combing through his hair. It went on for a while until Ichimatsu’s panting and soft coughs quieted down. Osomatsu’s hand then stilled in its movements.
“Ichimatsu?” Osomatsu broke the silence. Ichimatsu didn’t respond, knowing he would continue on anyway. Which he did. “We’re not doing that again. I mean, it was super hot!—well, until you passed out. But… you really scared me there, man.” He was looking at Ichimatsu with a level of sincerity that was unusual for him.
Ichimatsu grunted. Fair enough.
Osomatsu stared at him for a moment, maybe expecting an argument or something—he wasn’t sure what really. But he relented and his hand went back to its petting motions again. Hmm. More of that and Ichimatsu would start purring, even feeling as gross and uncomfortable as he was. There was something special about receiving affection from his oldest brother, the knowledge that he did care for him.
Osomatsu spoke up again after a while, not being the type to keep his mouth shut for long. His tone was lighter, trying to disperse the heavy mood, but Ichimatsu could still hear the underlying shakiness in it. “Hehh.. good thing it wasn’t Jyushimatsu though! His knot is huge!! You would’ve died for sure.”
Ichimatsu knew he was just mindlessly joking but the thought sent a full-body shiver through him nonetheless; a weak noise slipping out of him before he could stop it. If it had been Jyushimatsu—God, he could come just from the thought of it, if he wasn’t so spent. Damn. Any thoughts of trying it with Jyushimatsu had been thrown straight out the window, after seeing how badly it had gone with Osomatsu. He felt a bit of anger at that, but he wouldn’t risk putting Jyushimatsu in the position Osomatsu was in now.
Osomatsu knew it too, which was probably why he didn’t warn Ichimatsu off it, instead opting for, “You’re such a fucking masochist, bro.” There was affectionate tone in his voice as he said it though. He was oddly proud of what a sexual deviant his brother was—almost dying not deterring him from the fantasy. Now that was a man after Osomatsu’s own heart. Ichimatsu would probably even jack off to it later, the pervert.
Osomatsu looked around grandly and sighed. “Guess I should clean this up, huh..” He wasn’t sure how long it’d been since they’d started. The other brothers could come back any minute now. Osomatsu usually refused to do any sort of cleaning; neither he nor Ichimatsu were good about tidying up their messes. Though there wasn’t usually this huge of a mess either. What usually happened would be that Choromatsu or Todomatsu would discover a new stain and shriek about it until it fell to Karamatsu to clean it up, if it was still fresh enough. This, however, was not a situation either of them would want to explain. Osomatsu was usually obnoxiously braggy about any sex he got—all the brothers knew exactly what he got up to with each of the others—but he wouldn’t be talking about this for a long time. Not until it came out in a random outburst at least, because he honestly couldn’t be expected to control his mouth.
Osomatsu made a few more sighing sounds but finally did get up. Ichimatsu closed his eyes and listened to the background noises as Osomatsu cleaned, starting to drift off to the ambient rustling sounds being produced. At some point Osomatsu came to strip him of his clothes and wipe him off with a wet towel. They really needed to shower but it would do for now. He forced Ichimatsu to drink some water too, holding his head up as he slowly poured it into his mouth, rubbing at Ichimatsu’s throat to help him swallow. It was strange; Osomatsu was usually shit at aftercare. Ugh, his throat still burned and he’d probably have to sit dinner out. The pain wouldn’t be as pleasant when it was food irritating it.
He used this chance to rinse out his mouth, finding that he had to tilt his head around, not having enough control of his muscles back to swish. He let it fall back into the cup when he was done. Osomatsu looked at it in disgust, setting it on the table for now. Hopefully he’d remember to dump it out so no one would mistakenly drink it later, but that wasn’t Ichimatsu’s problem. Actually, he’d love to see one of his brothers drink it on accident. It’d be hilarious. Especially if it was Karamatsu.
Ichimatsu was picked up and plopped onto the couch, a blanket thrown over him. Osomatsu left again and Ichimatsu heard some more noises in the background that could’ve been anything at all. Maybe he was burning their shirts after all. It was easier than washing them. Osomatsu didn’t smell singed when he came back though, so maybe not. Ichimatsu was kind of surprised that Osomatsu came back at all, really. He thought he would’ve reached his limit on caring by now. He didn’t give Osomatsu enough credit, maybe.
Osomatsu got on the couch behind him, a tight but manageable squeeze. It was nice. He was warm. Ichimatsu randomly wondered what he had done with the ring gag. He hoped Osomatsu had kept it. That part had been fun, even if they couldn’t use it for knotting anymore. He’d ask when his voice felt well enough to speak again. Right now he was going to enjoy the rare feeling of being cuddled by his oldest brother, Osomatsu’s breaths softly ruffling behind his ear as he drifted off to sleep.