Archive of Our Own

Chapter Text

“Of course, Chishiya. For as long as you’ll stay.”

For the first time, Chishiya lets go— willingly. He eases his hold, allows himself to drift back.

And when the familiar, warm haze arises, he embraces it with open arms

Gradually, he feels himself heat up even further, his pheromones laying thick and heavy in the room. 

He taps into his Omega Instincts for some advice, but it purposely stays quiet— incredibly unhelpful and lost, as if it didn’t expect Arisu to actually agree to this arrangement after all the trouble it’s caused. Ugh. 

Sighing internally, Chishiya shifts away as he removes his trunks. It was just a matter of time before that garment wasn’t needed, anyway. He unceremoniously drops it to the side as if he was throwing away some radioactive object. 

Chishiya doesn’t think he can ever get used to this; being so bare and vulnerable in front of another person. He would feel way more embarrassed in this compromising position, if it was anyone but Arisu. Arisu’s gaze remains fixated on Chishiya’s face, with his own face scrunched up from nervousness, as though it was a crime to look anywhere else.

He chuckles amidst the increasingly awkward atmosphere, “Relax, Arisu. My anatomy is nothing you haven’t seen before. Looking constipated really ruins your delicate features.”

Arisu slaps cheeks in clear embarrassment. “Yeah, yeah, sorry— I’m— I’m just kind of lost right now.”

Chishiya tilts his head, nodding thoughtfully. Logically speaking, his own body should be preparing for sexual intercourse right now, producing slick to aid the process. Yet, nothing comes out. Chishiya tries to make sense of it— he hasn’t had a heat in years, so perhaps his body simply needs time to remember, to adjust to the slow, unfamiliar pull of it returning. Chishiya knows it’ll come naturally, but he can’t help but wonder how— if there’s still this sort of button that he’d yet to activate. 

Nonetheless, he reaches over to take out a packet of lube. “Don’t quote me on this,” Chishiya says, tearing it in between his fingers, “but I’m assuming this is the time to prep me. Or I can do it myself.”

He reaches down, just to be stopped by Arisu holding his wrist.

“No, no,” Arisu blurts out, “I’ll do it.”

Wordlessly, Chishiya hands over the lube to Arisu, who pours the liquid over his shaky fingers. A finger prods at the entrance of his hole, before slowly breaching it, and Chishiya hisses, eyebrows knit together as he tries to adapt to the stretch. 

“Relax, Chishiya. Breathe,” Arisu reminds him. His finger in Chishiya remains still.

“I’m trying,” he grits out. He breathes in, breathes out. It’ll be fine, he tells himself. He’s already made a commitment— and Chishiya does want this, especially after everything he’s shared, after everything he’s willing to give up. 

Still, his body lags behind his resolve, stubborn no matter how much he tries to appear all knowledgeable and calm. His thoughts are steady, but his pulse betrays him, the tension in his muscles slow to ease. On the contrary, it seems to get worse the more pressure he puts on himself. Additionally, the anxiety in his chest doesn’t fade, no matter how composed he forces himself to appear. 

The cogs in his head start turning— his thoughts coming in way slower than before,  a sign that his Omega is slowly inching to the forefront, waiting for the moment when Chishiya is relaxed enough to slip— but Chishiya would be damned if he lets his Omega take control before he’s even had the chance to understand what this feels like.

Arisu pulls his finger out. “It’s not working.”

“I have eyes, too,” Chishiya snaps, before he takes a deep breath to reign himself in. He doesn’t understand why something this simple is just so damn difficult— why he can’t stop turning the gun on himself.

This is so ridiculous, he thinks, the failure of it bitter on his tongue. I’m being so ridiculous.

“It’s alright,” Arisu says, calm and reassuring. He sounds relieved, for some reason. “We don’t have to do that yet.”

Then what? Chishiya doesn’t say.

Arisu shifts, and before Chishiya knows it, Arisu’s head is directly above his cock. He just stares at it… nervously, awkwardly— and Chishiya quickly gets it, because as much as this situation is a first for Chishiya, it might just be the first for Arisu, too. 

Neither of them knows what they’re doing. And somehow, the lack of experience, the shared uncertainty— the way they’re both trying— makes it slightly easier for Chishiya to breathe.

“Could I give you oral, instead?” Arisu suggests, and the following string of words rush out instantly, “You— you know, I read somewhere— maybe it won’t be as nerve-wrecking for a warm-up, since there’s no penetration and— I have no idea what I’m talking about.”

And Chishiya can’t help the snort that leaves him, followed by a chuckle.

“Yeah, let’s try that.”

“Okay, then I’ll just—” Arisu breathes out. He closes his eyes and takes a deep breath in. The next time Arisu opens those eyes, he seems more self-assured, his pheromones mingling in with Chishiya’s— and he wonders if Arisu’s Alpha has got to anything with this slight change in demeanour.

Taking Chishiya’s cock in his hand, Arisu gives it a few pumps— feels it against his fingers, trails the underlying vein— and Chishiya’s breath stutters at the slow stimulation. Arisu licks his lips, before he proceeds to go down on Chishiya. Chishiya lets out a small groan as  Arisu keeps going, taking in as much as he can.

The wet warmth that envelops his cock is something new but welcomed. Chishiya barely stops the curse from slipping out of him, as Arisu peers up at him from under his eyelashes, waiting for Chishiya to give him the green light. So eager yet so patient, and his steadily hardening cock twitches once from the sight alone. He nods, and Arisu hollows his cheeks.

Fuck. 

His eyes flutter close, breathing becoming increasingly ragged as Arisu continues his ministrations. There’s clear inexperience in his moves— sometimes he goes too slow, other times too fast— but whatever he lacks, he makes up for it in energy. He trails his tongue from the base to the tip, swirling around the head of his cock before going back down— eyes always on Chishiya; watching, gauging his reactions. And that attentiveness seriously turns him on.

“Shit—” Chishiya groans. “Give me— your hand.”

And Arisu listens. He lets Chishiya guide his fingers down to his perineum— applies pressure on it— and Arisu gets it.

Chishiya throws his head back as the pleasure starts building, as the heavy fog in his mind starts to increase little by little. The tension in his body starts to ease away, replaced by the heat forming deep in his gut. 

His hands thread through the strands of the other’s hair, gripping them tightly on the occasions where the pleasure gets more intense. Arisu lets out a muffled groan of his own, sending vibrations down Chishiya’s cock . He doesn’t appear to care; he just keeps sucking Chishiya off, and keeps on massaging his perineum. 

Soon, it starts to get overwhelming, in a good way— 

“Arisu—” Chishiya gasps out in surprise,  as he falls apart right under that mouth and those fingers, pleasure rippling through him before they settle to a pleasant buzz between his ears.

He pants heavily, dazed, trying to recollect himself. Naturally, his eyes flicker to Arisu,  who’s… coughing.

“Fuck—” he heaves. Shit, he hadn't even noticed that— “Arisu— are you—”

“Yeah—” Arisu cuts him off, voice hoarse. “Yeah— I— wow.”

Arisu smiles, wiping the come from his lips. “That was something.”

Chishiya can’t stop the corner of his lips from curling up in agreement. He’s never been one to see the point in sexual intercourse— he’d always taken heats and ruts as some biological need to be fulfilled, a transaction between Alphas and Omegas to make the experience easier on the body— but now, he guesses he can kind of see it. How, with the right person, it feels a little different than what he had assumed it would be.

“Oh,” Arisu comments, and Chishiya follows his gaze, trailing all the way down to the slick that’s seeping out of his hole, pooling on the sheets.

He should be happy that his body is finally cooperating— it really was about time— but instead, Chishiya grimaces. “… Ew.”

Arisu giggles, before meeting Chishiya’s eyes. He can only imagine how disheveled he must look right now from Arisu’s viewpoint, legs feeling like jelly, heavy lidded eyes with a flushed face, yet Arisu murmurs, “You’re so pretty. God, you’re so pretty.”

And that praise sends a shiver down his spine. 

He covers his face with his arm in response, his voice trembling, “Just get on with it.”

Arisu proceeds to prods a finger at his entrance— and this time, his body slowly opens up for Arisu, with Chishiya feeling more slick drip out of him as the finger goes deeper and deeper.

He takes a few more seconds, before Arisu must have deemed him relaxed enough, because the finger starts moving. And Chishiya has to admit that, as much as the curious part of him finds it fascinating to watch the movement, the sensation itself is strange— having something foreign and warm rub his inner walls. Eventually, after a few quiet sounds of discomfort, he finally starts to get used to it.

Refractory periods during heats must be non-existent, because the heat in his lower belly starts building up shortly after as Arisu adds in a second and third finger, pressing at randomised spots. Arisu’s eyebrows are pulled together, clear concentration etched in his features.

Feeling his own inhibitions wear off, he bites his lip, an arm over his mouth, trying to muffle the embarrassing gasps and groans he’s making, as he feels his cock becoming hard again.

“I wanna hear you, Chishiya. Can I hear you, please?” Arisu says, looking at Chishiya with those doe eyes of his, and Chishiya was so close to giving in immediately.

“It’s embarrassing,” he admits, as he swallows another moan. 

“It’s really not.” Arisu smiles. Another finger enters, and he chokes trying to stifle another groan. “I just wanna know if it’s pleasant.”

Do it, his Omega tells him. Let him know.

Arisu manages to remove his arm without much resistance after that.

Arisu adds another finger, but it’s simply not enough. Something is missing.

He needs more. 

With a shaky breath, Chishiya grabs Arisu’s wrist, and pushes his fingers further in till the last knuckle. Arisu follows Chishiya’s lead, kneading and prodding as Chishiya guides his hand. 

More, more. His Omega pleads. 

Then, Arisu presses a finger at a certain spot, and Chishiya gasps loudly from the sudden jolt of pleasure, his free hand clutching the sheets tightly.

A flicker of recognition flashes through Arisu’s eyes, and that finger presses against that spot once again.

“Oh— oh fuck,” Chishiya gasps out, throwing his head back against the soft pillows. His hold on Arisu’s wrist becomes lax, as the pads of Arisu’s fingers take initiative to massage that bundle of nerves. 

“Over here, Chishiya?” Arisu asks, applying more pressure. 

Chishiya squeezes his eyes as he shudders out, “Yes, there— ah—” His mind is all fuzzy now, the intoxicating pleasure intensifying by tenfolds. All he can think about is this hand servicing him, touching that spot, making him see stars and making blood roar in his ears. He can’t seem to take in air properly; feels like his body is being strung tight. And Arisu really is quick adapter, because suddenly there’s pressure against his perineum, pressing once, twice—

He jerks and lets out a choked moan from the constant barrage of liquid pleasure flooding him. He can’t stop trembling. Wants the Alpha to never stop,  anything to lengthen this feeling—

“Fuck.” Immediately, Arisu leans forward, and the action causes his fingers to reach deeper. His mouth is on Chishiya’s neck, gently nipping the skin as the Omega pants and whines.

“You came,” he whispers between heated kisses, and the Omega can barely register it; head still in the clouds, trying to prolong the high as the familiar feeling forms in his cock again. 

“That was hot. So hot. You’re so hot,” Arisu groans. 

Chishiya is embarrassed to admit that he nearly comes again from those few words alone.

“God— Alpha—” he chokes out, brows furrowed.

“I know,” Arisu says softly. “Just let go.”

The fingers in Chisiya just won’t stop, and his Omega loves it. They abuse his sweet spot, going faster and faster—

And Chishiya comes again with a moan, toes curling, back arching off the bed as his vision whites out. He’s breathless— lungs useless— as he tries to come down from his high, but little jolts of pleasure continue to run through him— with the way Arisu’s fingers have slowed their pace, idly teasing his sweet spot.

“Stop— Arisu—”

And those fingers immediately halt in their movements, with Arisu looking at him worriedly. However, before he could get a word in, Chishiya quickly tells the other to remove his hand— even if Chishiya nearly whines at the loss. 

Flipping them over, Chishiya straddles Arisu’s hips. Arisu looks up at him, surprised by this change.

Chishiya’s cock presses against the hard bulge of Arisu’s own swimming trunks, and the other moans loudly. 

“Fuck, Chishiya—” Arisu curses, his hands coming to rest on his waist, the pressure heavy, possessive and searing hot. “Stop moving or I won’t last.”

Chishiya looks down at him and snorts. “We have to get even, right?”

Arisu grunts, and Chishiya smirks. 

The temperature of the room just keeps rising, and Chishiya unzips his jacket, taking it off and dumping it unceremoniously to the side. He doesn’t miss the way Arisu’s eyes soak up the sight of him– pupils blown wide, cheeks flushed. 

Just the thought that his body is enough to make Arisu act this way is incredibly arousing in itself, and Chishiya finds his confidence seeping back in.

He tilts his head, and Arisu’s eyes follow like a starved man. “Like what you see?”

“Yeah,” the reply comes instantly, awed and star-struck. Arisu keeps himself occupied by running his hand along the curves of Chishiya’s body, while Chishiya is trying and failing miserably to stay composed at the other’s blunt confession.

“Well,” Chishiya drawls, grinding down on Arisu, “you’re not so bad yourself.”

The bulge in the Alpha’s pants twitches, and Chishiya impatiently pulls the waist band of his swimming trunks down. Arisu goes along with it, till his trucks are discarded.

It's the average male Alpha length, Chishiya can’t help but observe. Still impressive, nonetheless.

Slick continues to trickle out of his hole, and he clenches on nothing, feeling so empty. 

With a hand splayed across Arisu’s stomach, Chishiya hoists himself up, his hand guiding the Alpha’s cock to his hole. His breath hitches as it barely goes past the rim. He slowly sinks down onto it, breath shaky at the newfound warmth— the way every surface of Arisu’s cock rubs against his inner walls just right. 

It’s big, bigger than Arisu’s fingers, that’s for sure— and halfway through Chishiya wasn’t sure if the entire thing would fit. He feels so full already; surely, surely, that was the maximum that he could take. 

But Chishiya likes a challenge, so he continues. The way Arisu is biting on his own lip, breaths coming out quick and short— clearly restraining himself from thrusting up— keeps him going.

His body helps him, producing more slick to ease up the process. He feels heady, like he’s about to faint, when Arisu says, “Breathe, Chishiya. Relax.”

It’s only then did he realise he’d been holding his breath all along. It does the trick, as he finds himself opening up more, till he’s firmly seated on Arisu’s pelvis.

“Give me a minute,” he forces out as he rocks back and forth, familiarising with this newfound feeling.

“Y— yeah. Take your time.” Arisu nods, clearly trying to adjust to it as well. “Fuck, you feel so good, Chishiya.”

He looks away in embarrassment as the praise goes directly to his own cock, and it twitches in anticipation. His hole clenches on instinct, and Arisu groans. Chishiya tries lifting himself up, feels the textured skin run past his walls, and slowly sinks himself once again.

“Enjoying yourself?” Chishiya murmurs at Arisu’s blissful expression.

All he gets are frantic nods in return.

“You’re killing me,” Arisu blabbers, as Chishiy rolls his hips in circles, “you’re seriously killing me.”

Heat rushes up to his ears, and the whine that leaves Chishiya’s lips is one he wasn’t expecting.

And Arisu continues, sweet praises spewing from his lips, making Chishiya dizzy as he tries to concentrate.

“Shut up,” Chishiya groans out. “You’re making me lose focus.”

“Sorry,” Arisu chokes out. 

Chishiya lifts himself up again, and slams himself back down. Again and again; each one harder, more confident than the last. 

More, his Omega demands. More.

At a particular angle, he finds the same spot that Arisu found earlier. He hones in on it, slamming back into that spot repeatedly. He moans, arms and thighs trembling as he tries to keep up the pace but to no avail.

“Please, please Chishiya, let me help,” Arisu groans, fingers twitching in anticipation.

Chishiya nods wordlessly. 

Immediately, Arisu picks back up the pace, thrusting up; faster and harder than what the Omega could’ve managed. Chishiya’s hands scramble for stability, landing on Arisu's shoulders. He digs his blunt fingernails into the skin, mind too far gone to think about the red marks he’ll leave behind. 

All he hears are his own noises, loud and embarrassing but he just can't stop— not when every thrust causes waves and waves of pleasure to snake up his spine. Yet, The Alpha remains silent as requested, only letting out soft groans and grunts, and Chishiya sort of misses the butterflies he gets from Arisu’s praises.

And now, Chishiya kind of regrets asking Arisu to shut up.

“Say something, fuck,” he demands, words muffled. “Keep talking.”

“You’re so smart,” Arisu mumbles, his own words coming up in sharp breaths. “So witty and— ah— snarky.”

“Everytime you think of something unique,” Arisu continues, in between Chishiya’s moans of ecstasy, “I’m so—fuck, Chishiya— in awe.”

Suddenly, Arisu flips them around. He hooks Chishiya’s legs over his shoulders, and hunches forward, bending the Omega. At his angle, his thrusts reach deeper than anything Chishiya had experienced so far, and he comes again— fast, untouched without warning with a soundless scream.

“You smell so good, I’m addicted,”Arisu says as he trails butterfly kisses along the side of Chishiya’s neck, and the Omega can do nothing except to receive and indulge in it.

“Can I knot you?” the Alpha whispers, breath scalding hot against Chishiya’s skin. Arisu’s scent blooms along with his, and each breath Chishiya draws blurs the edges of his thoughts, pleasure clouding his mind. “Please, please, Chishiya.”

“Yes,” Chishiya whines at that tone. He spread his legs wider, eagerly. “Do it.”

He feels the base of the Alpha’s cock expanding, and he feels the air being sucked out of him as his body immediately tries to accommodate, excess slick leaking onto the sheets. He buries his head into the crook of Arisu’s neck, greedily inhaling in his scent for comfort as he tries to distract himself. 

“You’re doing so well,” Arisu grunts out, as his thrust becomes quicker and sloppier, his knot catching.

“Ah—” he whimpers, because it’s still not enough, yet things are moving too fast for him to adapt, and it’s a little painful—

It’s big— oh God— he might actually break—

“I know,” the Alpha murmurs in comfort, even as the words come up ragged, “you’re— taking it well. So— amazing.”

The Alpha comes with a moan, and the warmth flooding through the Omega— knowing that he’s being marked from the insides, filled to the brim— tips him over the edge once more. 

He feels the Alpha’s body tremble with the exertion of it all, as the Omega’s body milks his cock, desperate for more.

But it’s still not enough.

Barely a second after, he feels himself get uncomfortably hard again.

“Hah— Alpha,” the Omega slurs, head lolled aside, “more— Arisu—”

Wordlessly, the Alpha grinds against that sweet spot of his; hips moving in circles, and Chishiya knows that it’s about time as he’s more sensitive to it all. Not the pain from overstimulation, but constant waves of pleasure over pleasure that just won’t stop.

The Alpha lightly brushes his hand over the head of the Omega’s cock, and he’s coming again with a cry.

“It’s… bubbling up.” the Omega shudders, panting hard. All his thoughts are mushy, now; the only thing in his mind is the constant repetition between Alpha and Arisu. 

He feels soft, gentle hands cup his cheek, thumb rubbing along the lines of his cheekbone.

“I know, I know,” Arisu repeats reassuringly, his gaze fond, and Chishiya just feels so incredibly safe.

The edges of his vision blurs as Chishiya nuzzles into that palm, occasionally letting out purrs.

Chishiya lets out a small, genuine smile at Arisu, and tries to commit him to memory one more time. “See you… in a few days.”

Arisu smiles back. “I’ll be waiting.”

Arisu wonders when his luck started to rise.

He had thought his luck would have reached its limit. With how this new world operates, every move he takes seems to determine if he’s worthy of taking another breath. Alas, his luck seems to have shot past the limits of what he had thought was possible, all because he hadn’t expected Chishiya to choose him. And yet, somehow, his luck has stretched far beyond what he ever thought possible. Because he never expected Chishiya to choose him. To trust him with an Omega’s most intimate moment.

Still, against all odds, he has.

He looks at Chishiya, sears the image of him like this into his mind— hair in a mess, cheeks flushed a pretty red, and takes pleasure in being the only one who gets to see this otherwise unreadable man this way.

Chishiya’s scent has gotten stronger— a rich blend of velvety chocolate and strong coffee beans with a touch of cinnamon and whipped cream. It makes his mouth water, and his Alpha sighs pleasantly in the corner of his mind. 

And the next time Chishiya opens his eyes, Arisu can feel the shift in demeanor. His heartbeat increases— breathing laboured— a reflection of his Alpha’s excitement and curiosity for that Instinctual connection. Arisu feels the emotions growing stronger with every passing second, and he has to will his Alpha back in with a warning.

“Chishiya?” Arisu says, hesitant. 

When Chishiya smirks this time, it’s not laid back or playful anymore. It looks more crazed and excited. Hungry. Like he’s never going to let Arisu go.

Chishiya forcefully pulls Arisu down by the neck for a kiss, catching Arisu completely off-guard. Chishiya eagerly licks and nips the bottom lip of the other, drags his canines along them, a silent demand for Arisu to open them. Arisu obediently complies, allowing entry of the other’s tongue. Just like its owner, it’s dominating, demanding to take the lead. 

And as long as it’s not against the rules Chishiya set, Arisu lets Chishiya do as he pleases; he closes his eyes and gives and gives and gives.

The next few hours are manageable. Arisu starts to actually get the hang of it— how Chishiya seems to love being fucked in certain positions, his gasps and moans a great motivator for Arisu; how each sweet sound that Chishiya lets out causes his cock to twitch in want. He’s demanding, too, blunt nails digging into Arisu’s skin when it’s just not going fast enough.

So far, it’s manageable, till the telltale signs of hunger begin to settle in.

“Come on, Chishiya,” Arisu sighs, holding a jelly drink packet up to him— the jelly made specifically for heats and ruts, packed with the right amount of nutrients. Albeit tasteless, it’s easy to consume and digest. “I’m hungry, I know you’re hungry, so it means that we’re all hungry.”

But it’s hard to instill rationale into an Instinct whose main goal is to just fuck. If gazes could kill, Arisu would be dead. All of Chishiya’s expressions seemed to be amped up high, so open and crystal clear for the world to see when they’re not actively being concealed.

Chishiya tries moving against Arisu, and the latter curses as his knot gets tugged. Chishiya whines, clearly not satisfied.

“More— Alpha—”

Arisu bargains, “Drink this first.”

The other shakes his head fervently in strong denial. In fact, Chishiya seems to be determined in switching their positions, wanting to ride Arisu’s knot to oblivion. Arisu stands his ground, refusing to give in— even as Chishiya’s scent sweetens, trying to entice Arisu into doing just that.

When that fails, Chishiya begrudgingly looks down at the packet, moves closer to it, and just as Arisu was about to celebrate his victory, Chishiya bites his finger.

“Ouch— hey!” Arisu sputters as he retracts his hand, caught off guard.

Chishiya uses this opportunity to try and flip them around, but Arisu pushes back.  The former lets out a petulant huff.

“Look,” Arisu tries to reason, “you can do whatever you want with me after you take this, okay?”

For once, Chishiya stops trying to resist, intrigued. 

Before he can change his mind, Arisu adds on quickly, “I’m serious.”

Chishiya takes one sip of it, and immediately his face pinches up in disgust. Scowling, he slaps it aside.

“You—!” Arisu barely manages to stop the jelly from spilling out. He frowns. It doesn’t even make sense. He’s already bribed Chishiya’s Omega with more knots, and Chishiya has mentioned not having any preferences—

But that’s Chishiya’s decision.

“Would you…” Arisu mumbles as he thinks. He spots honey sticks poking out the plastic bag. It’s not exactly filling, but if Chishiya’s going to be picky, Arisu will take what he can get. “Like something sweet?”

He gets a skeptical look from Chishiya as he bites it open. Waits with bated breath as Chishiya tries it. Rejection doesn’t come. And Arisu continues to stare as Chishiya consumes it, and it’s only then does Arisu reach over to grab a plain granola bar.

To give credit when it’s due, Chishiya does wait till Arisu’s done with his food; this time, Arisu allows himself to be flipped over. Chishiya grinds down on his knot with renewed vigour, and their usual programme resumes.

Arisu wakes up to this strange feeling.

And he knows it can’t have been long since he fell asleep— he knows his own body, and this heavy drowsiness is painfully familiar, the same fog that used to settle in when he, Karube, and Chota dared each other to survive their days on three hours of sleep.

Sluggishly, he pats at the space beside him and realises it’s empty. Just as he makes that observation, he feels the air being forcefully pushed out of him.

“Wha—” he mutters, voice trailing off at the sight in front of him.

Chishiya is on top of him, with a posture of determination, hands splayed on Arisu’s stomach as a way to maintain his balance. A moan slips out of Arisu, and his eyes travel down… to see Chishiya grinding down on the hard bulge underneath the thin blanket he’d placed over himself.

“Woah—!” Ariu exclaims, surprised. Without thought, he pushes Chishiya aside as he clumsily rolls off the bed, wincing when he hits the hard floor. He stares up at Chishiya, eyes widening as that same alluring coffee scent sours immediately. 

Chishiya looks at him, eyes narrowed in a disgruntled expression, gaze alternately between Arisu— who’s on the floor— and the nest that now has an obvious, gaping hole.

“Oh,” Arisu says, remorseful, “I’m sorry.”

The other only continues to glare at him, hard, before his nose scrunches up and he hunches forward, whining. Immediately, Arisu scrambles onto his feet and rushes over. However, before he can get a word out, Chishiya is gripping onto his shoulders, pulling him back onto the bed.

He lets out a surprised yelp  as a side of him awkwardly lies flat on the bed, the position borderland uncomfortable.

“Wait— you’re gonna make your nest worse—” Arisu barely gets out, before Chishiya is grabbing his face and capturing his lips into a searing kiss— desperate and frenzied; more of a need than a want. 

His eyes widen, and using a substantial amount of force, Arisu manages to break away from Chishiya. He grabs Chishiya’s arms, pining and locking them at the side of Chishiya’s head. 

“Give me a moment,” Arisu says, recollecting himself.

Chishiya’s eyes are still hazy, glossed over, but Arisu can sense the quiet demand lingering there— carried in the way his scent sharpens into an overwhelming spiciness of cinnamon. Chishiya’s face tightens again, a flicker of discomfort crossing his features as he wiggles in Arisu’s grip, restless.

Then it hits him. He’s only read about it in books— where sometimes, in the throes of heat, an Omega would start this deep cramp if not filled up. But before he’s had time to unpack that, Arisu bites back a groan as Chishiya raises his leg to rub against his very obvious erection— all thanks to the heat pheromones in the room— desperately.

“Alpha—” Chishiya whines, “Want—”

“Yeah,” Arisu says. He hooks his legs over his shoulders, lining up his cock to Chishiya’s hole. He slides in, pressing his cock into Chishiya’s prostate with scary accuracy, and watches as the man beneath him whines and quivers. Arisu pounds into him, in the way he’s come to learn that brings him closer to the edge in the shortest amount of time possible. He knows his priorities now isn’t to draw it out, but to quickly alleviate whatever pain Chishiya might be still experiencing.

Chishiya presses Arisu’s hand against his cheek, face flushed, his eyes closed, brows furrow, panting and moaning with every beat.

“Deep—” Chishiya moans. “Alpha—”

“You like that?” Arisu asks, mesmerised. 

Chishiya nods hurriedly. “Yeah— Alpha— mine— mine—”

For a moment, his Alpha flares up sharply, satisfied to be claimed by the Omega. The possessive growl that comes out of him is unexpected, and the Alpha can’t stop that territorial feeling from settling deep into his chest. 

It affects the Alpha’s scent too, with the way it’s turning muskier on its own accord, the quiet insistence that the Omega is his heavy in the air. Yet, it seems to do the trick, as the Omega is coming with a cry, tension giving way, and Arisu isn’t far behind, his knot locking them in place.

It’s only after the other passes out— almost immediately after— does Arisu shake his head to snap out of this feeling, because this type of possessiveness  isn’t who he is, but his Alpha disagrees. With more concentration than he would have preferred, he manages to reel his Alpha back in, till it's a low simmer under his skin and isn’t as noisy as it was before. While waiting for his knot to deflate, Arisu scans the mess on the floor. He racks his brain, trying to recall how Chishiya organised and weaved the different clothes together. 

He spends a substantial amount of time attempting to put everything back together once he’s more mobile. Stifling a yawn, Arisu wonders if it’s even comparable to the original— he hopes it is, his memory has served him well in many games, but it might be a different story this time around with the way fatigue is catching up to him.

(Fortunately, when Chishiya wakes again, his scent tells the answer for him— sweet with approval, flattered and unmistakably pleased. Arisu files that away as a success.)

Things start to get a little more serious after that.

Arisu doesn’t even know how they got to this position between all the tussling, but he’s fucking Chishiya against the wall, the latter’s legs tightly hooked around his waist. A mix of slick and cum drips down Chishiya’s thigh,  as he lets out sounds of encouragement, being very vocal about directing Arisu’s movement— and he’s fine with this arrangement to just follow, but then Chishiya tilts his head, and the words Arisu had hoped would never be uttered leave Chishiya’s mouth, hanging heavily in the room.

“Mark me.”

His thoughts screech to a halt.

Arisu knows the advantages of marking— the duration of heats and ruts ending faster when one’s bonded, how there’s this intimate connection between both parties, emotions sensed without effort, how they understood each other without words. The bond leaves nothing hidden; it’s like standing bare before them, every truth exposed.

But that kind of closeness requires commitment and vulnerability, and Arisu knows Chishiya isn’t ready for that. And as much as Arisu longs for a bond of his own someday, he knows he isn’t ready either. Maybe in the future— when he’s out of this place, when life isn’t moving so fast, when everything doesn’t feel so precarious. But now isn’t the time.

However, their Instincts don’t know that.

He feels the way his Alpha perks up, on board with the idea.

Chishiya’s hands bury Arisu’s face into the slope of his neck and shoulder, his scent sweet and dangerous,  encouraging Arisu to take the bait.

To be with him forever.

“Hah— Alpha—” the Omega moans, fingernails beginning to dig into the Alpha’s neck as he tilts his head, baring his throat in a wordless offering. “Now.”

Arisu bites down on his lip, hard, grounding himself before he does something he can’t undo.

“Don’t, Chishiya,” Arisu grunts out, muffled, yet each accidental brush of his lips against pale skin leaves him dizzy, his Alpha stirring louder. His mouth waters.

The other can’t seem to take a rejection as an answer. His thighs tighten their hold around Arisu’s waist, as he presses Arisu closer, deeper, until Arisu’s face is smooshed against the scent gland and nothing but Chishiya, Omega, Omega fills his lungs.

“Give it to me—” Chishiya says.

Arisu doesn’t reply, trying to ignore the itch at the back of his mind to just give in. He focuses on the way Chishiya clenches down on him, the warmth building up with each thrust. He doesn’t trust himself to talk, anyway— for fear that the next time he opens his mouth, his canines would be sinking into that patch of flesh.

Trying to draw Chishiya’s focus elsewhere, Arisu’s hands fly to Chishiya’s cock, pumping him in time to his thrusts. He grinds at the Omega’s sweet spot, thumb circling the head of Chishiya’s cock— applying pressure, brushing the slit— and Chishiya throws his head back, trembling and moaning with each move. Finally, his hold on the Alpha loosens up, and Arisu can finally breathe.

Chishiya’s cock jerks beneath Arisu’s hands, come painting his chest, and Arisu continues stimulating him, knowing that once won’t be enough. 

“Hah— Chishiya—” Arisu groans out as he’s coming not long after, his knot locking them in place.

“Alpha— more—”

It does the trick— Chishiya’s successfully distracted enough to not ask for a bonding mark anymore. Arisu takes the reprieve for what it is, and even though the tides are against him on this one, Arisu tries to hope that it’ll remain that way.

With the way Chishiya’s scent has never been so enticing, so seductive, Arisu knows that they’re at the peak of the heat. 

It doesn’t help that Chishiya has now made it his personal mission to get a bonding mark from Arisu.

It’s getting harder to verbally reject Chishiya, harder to keep his Alpha in check when it wants nothing but to bond. Arisu isn’t oblivious to what’s happening— fatigue is starting to wear his inhibitions thin. Even now, he feels his own Instincts getting louder, sharper, just waiting for the moment Arisu slips. 

So when panic claws its way in, when he’s caught between yes and no, want and restraint, it’s no wonder Arisu makes a mistake. And that mistake comes in the form of a single word.

“Later.”

But Chishiya freezes, and so does his Alpha, and it’s blissfully silent, and Arisu can think again. 

Then Chishiya’s scent instantly sweetens in excitement and anticipation, and his Alpha finally quells, agreeing to play the waiting game as well. 

The word continues to escape him in a trembling breath, sealing the decision as it’s spoken. Even as guilt starts to build up, gnawing at Arisu, eating him alive. There is no backing out now.

“Later.”

He’s woken up by this warmth, too high to be natural human body heat.  He gives a sidelong glance to Chishiya who’s cuddling him, and he takes note of the red flush that colours Chishiya’s entire being. And Arisu doesn’t think much of it, because Chishiya has always been more on the paler side, but it doesn’t fade.

In fact, the colour seems to be intensifying.

He tilts his head, confusion taking over him. His Alpha sends him a signal— an anxious churn in his gut as prickles run down his spine. Something doesn’t seem right. Worriedly, he rests his palm against Chishiya’s cheeks and neck. 

“You’re burning,” he mumbles absently, as though it was an idle observation. A second passes. Then another. He gasps, “You’re burning!”

For a moment, Arisu flounders— mind in a disarray— looking somewhere, anywhere for guidance before realising that he’s alone in this; no one’s here to help him. His gaze lands on the bottled water, and Arisu opens it with haste.

“Chishiya. Hey, Chishiya.” Arisu hurriedly pats the side of his cheek, hoping to wake him up. It doesn’t work— the other remains oblivious to the way his body is overheating on a dangerous level. Even his breathing appears to be a little more laboured, as though it was getting increasingly tougher to take in each progressive breath.

Arisu tries to keep his mind straight, tries to think what anyone else would do. His answer comes in the form of rushing to the bathroom, grabbing towels with clumsy hands and soaking them under cold water until they’re heavy and dripping.

The anxiety doesn’t quell, not even as he presses the cool fabric down, not even when he feels the heat gradually leech away bit by bit. He counts Chishiya’s breaths, watches it slow down and even out.  The towels are cold beneath his hands, replaced when it's warm, wrung out, replaced again— the motions anchoring him even as sleep tries to take over. 

Then, Chishiya shifts, his eyebrows furrowing as his eyes flutter open. 

Their eyes meet, and Chishiya smirks. He crashes his lips into Arisu’s, teeth clashing in a messy force. Dazed, Arisu nearly falls into the hypnosis of his pheromones, but the unnatural heat that Chishiya’s exuding manages to snap him out of it. His thighs cage the other’s body. He hurriedly opens the bottle of water, pushes it in front of Chishiya’s lips— the ones that stay stubbornly shut.

“Drink,” he orders firmly, eyes boring into Chishiya’s defiant ones— clearly annoyed that their supposed make out session has been disrupted.

“Drink it, now,” Arisu instructs, leaving no room for argument.

Chishiya responds by turning his head away with a petulant huff, jaw setting stubbornly as he makes it very clear he has no intention of complying.

It never gets easier. 

And Arisu tries again— bargaining with him, the same thing that’s been successful in getting Chishiya to consume his pills and food. This time, though, Chishiya simply stares at him, unamused.

So Arisu frowns, the emotion of worry overriding anything else— because Chishiya isn’t in his right mind to get it— as he mutters, “Why are you so stubborn—”

Suddenly, an idea hits him. Chishiya did tell Arisu to stand his ground; but if assertion isn’t getting him anywhere, maybe there’s another, more subtle way of gaining control in this situation. Arisu adjusts his approach, softens his tone without speaking. His scent follows suit— the muskier note of sandalwood recedes, muted and subdued, easily overtaken by syrupy peaches and overripe figs— easing into something gentler, faintly pleading. A classic manipulation tactic that Arisu rarely resorts to, one he’s never been comfortable using. It’s an underhanded technique, one that he’s always believed should be wielded responsibly. 

But now, the circumstances are a little different from what he’s used to. 

Chishiya’s nostrils flare as he breathes it in, eyes fluttering shut for a fleeting moment, satisfied.

Arisu deals the finishing blow. “Please?”

The other wavers, and then…

Chishiya takes it. Slowly, as if Chishiya’s Omega itself couldn’t believe that it was actually going to give in to Arisu. He hesitates for a beat, then swallows, the liquid going down in careful gulps.

Arisu makes a point of keeping his expression steady, refusing to let the relief flooding through him show, for fear that the other might stop just to be difficult. His mouth betrays him anyway, wobbling despite his best efforts— he’s never been good at masking how he feels around the people he cares about. Whatever expression he ends up making must be obvious, because Chishiya pauses. Then, slowly, he reaches up and pokes at Arisu’s cheek, his thumb dragging the corner of Arisu’s mouth upward until it forms a lopsided smirk.

Chishiya’s eyes gleam with quiet amusement.

And Arisu’s heart flutters, tripping over itself. Breathing slips his mind as warmth spreads across his face, goosebumps racing down his skin.

“Fuck me—” Chishiya demands after the bottle empties.

“Yeah,” Arisu murmurs, eyes softening with quiet affection, “whatever you want.”

Overall, Arisu really underestimated how clingy a heat-ridden Chishiya can get.

He’s pretty sure the only time he gets to be alone is in the bathroom, when Chishiya is sleeping. Even then, he’s under a time crunch.

It doesn’t matter if Arisu’s own scent is prominent in the room, so long as he isn’t in Chishya’s line of sight, his scent turns rotten immediately— reeking of such anguish that has Arisu’s Alpha crawling under his skin uncomfortably, signalling Arisu to console him.

“Hey— hey, it’s okay,” Arisu reassures Chishiya, who’s huddled up on the bed, hands tightly clutching onto the same flannel shirt that Arisu had given him during the Eight of Spades. “I’m here. I’m not going anywhere.”

Chishiya’s scent sweetens— back to the rich, velvety, hot chocolate with tons of whipped cream. Purring, he wraps his arms around Arisu’s neck— demanding, possessive.

Arisu had never thought Chishiya would display such kinds of behaviours openly— someone who wants to own, and own, and own. But there are many things Arisu still doesn’t know about him; with the way Chishiya has a knack for making people feel like they understood him, even when they’ve barely scratched the surface. 

Perhaps beneath the distance he keeps and the carefully maintained facade, there’s this version of Chishiya who craves love and attention just as desperately— only without knowing how to verbalise or show it.

“Alpha,” Chishiya whispers greedily, and Arisu leans in for another round. 

Time has lost its meaning for Arisu, and he honestly doesn’t know how much longer he can last. Both of them are tired; their staminas aren’t enough for the duration of Chishiya’s heat. Arisu’s thighs are cramping from exertion— he’s been letting Chishiya ride him more often than not just because he can’t keep up. But the other’s energy is diminishing as well, and he’s left to pick up the slack. It doesn’t help that Chishiya’s been crankier as well, because his cramps don't allow him to fall into  peaceful slumber, wanting to be constantly filled.

“More— more,” Chishiya groans, soft but still as demanding after Arisu’s knot deflates. 

“Yes, yes,” Arisu says tiredly as he pulls out. He turns Chishiya around, till his face is buried into the soft pillows, ass up. 

The effect is immediate, as Chishiya keenly arches his back. It isn’t the first time they’ve been in this position, and if Arisu was in a better state of mind, he would have taken this as any normal one. However, there must be something in the way Chishiya presents himself this time around, because his Alpha goes crazy. The Alpha’s breath hitches, mouth dry at the perfect display of a mating press. The Omega cries out, hips weakly thrusting back to meet the Alpha’s. His hair parts around his nape that is flushed a pretty pink; so enticing and the perfect area to bite down on.

The Alpha licks the area, and a shiver racks through the Omega’s body. He feels his own canines elongating, mind blank except for the alternating signals of mine. Mark. Mine. Mark. 

His canines graze against the swollen mating gland.

The perfect mating press.

Just one bite, the slightest pressure, and the Omega would be all his. 

His, his, his.

The Omega writhes and whines beneath him in response. “Please, please, Alpha. Wanna be yours.”

And the Alpha opens his mouth, ready to bite down as his knot forms—

— And he bites as he comes in pulsating waves. Presses harder and harder, his canines digging into the flesh—

— To make sure the bonding mark stays—

— But there’s no satisfaction in it; none of the warmth that should unfurl through his veins. Instead of that heady mix of both their emotions and pleasure threading together till they're indistinguishable, there’s only this hollow, disconnected sensation.

And the Alpha realises— it hurts. 

His jaw relaxes as an automatic response to the metallic, salty taste that blooms on his tongue. 

His breath stutters, like his lungs have forgotten their rhythm. His chest tightens as his gaze drops, dragged by sharp, insistent throbs. Teeth marks stand stark against his own forearm, skin broken and red oozing out.

Arisu’s mind finally lurches back into motion, trying to catch up with the situation at hand.

“Why… why…” the Omega whines. His hand comes to rest on his unmarked gland. 

“Wait— wait—” Arisu stutters, as his canines— still sharp and ready to claim— aches against his gums. 

Chishiya cries in anger, and before he can dig his nails into the mating gland, Arisu is forcing it away. 

“Don’t—” he blurts out, frantic, attention flickering between the blood and Chishiya.

“Mark,” Chishiya bargains.

“No— no,” Arisu chokes out, trying to focus even as his Alpha chants itself into his thoughts, circling on their compatibility. “I can’t.”

Chishiya makes a sound of bitter frustration, body trembling, and Arisu tries to distract him by grinding against him.

This time, it pacifies him only for a few seconds, before Chishiya is using his other hand to scratch it. Arisu barely manages to stop it. The nails dig into Arisu’s skin, hard and painful, and Arisu sucks in a sharp breath.

“Chishiya!” Arisu scolds. 

Chishiya sobs, body shaking from exertion, “Mean. Mean, mean, mean.”

And Arisu would be lying if he said his heart didn’t plummet at that, the impact hollowing out his chest.

“I’m sorry,” he sighs, “I’m so sorry.”

Chishiya’s lashes are wet when he looks at Arisu, something frantic flickering in his expression— as if his Omega knows the odds are already against it, as if after this, there will be almost no chance left at all.

And for once, Chishiya pleads.  “Please Alpha, please—”

“I can’t,” Arisu emphasises.

“Liar, liar, liar,” Chishiya accuses, tone weak, the last of his fight slipping away as drowsiness consumes him.

“I know,” Arisu mumbles, his Alpha’s guilt gnawing at him as Chishiya drifts off. “But I’d rather be a liar than have you regret this.”

Arisu examines his bite mark. The skin around it is red and a little swollen. The only saving grace was that it didn’t appear to be that deep of a wound, just light enough to draw blood. Most importantly, though, it aches— throbbing and insistent.

First aid… first aid… he rushes to the bathroom. Chishiya— always seemingly prepared— looked like the type to have a first aid kit on hand. 

He trawls through cabinets and drawers, uncovering a jumble of metal parts and loose wires— an assembly that announces a safety hazard waiting to happen. Eventually, he does find what he needs, tucked behind handcrafted devices and beside this piece of paper— a circle with squiggly lines protruding out of it, like some poor attempt at drawing a hairball. 

Despite being inexperienced, he tries to make it work— and it manifests in a bandaged arm that’s more improvised than professional. 

He proceeds to splash his face in cold water in an attempt to get it together, as the weight of it all comes crashing down on him. He takes a deep breath to calm his racing mind but his heart pounds loudly in his chest every time that bandaged arm enters his view. It reminds him too much of his bandaged thigh, and it brings back unwanted emotions and memories.

Close. That was too close. 

Chishiya has placed his trust in him. Arisu cannot break that.

It’ll be over soon, he tells himself. He feels like breaking down— because he’s so, so tired, and Chishiya isn’t there to help him at all. Hold on for just a little longer, Arisu.

Contrary to what he had expected, Chishiya no longer asks for a bonding mark— defeated resignation settling in, too tired to fight anymore, only letting out whimpers to catch Arisu’s attention.

Arisu’s Alpha is quiet, buried deep in the back of his mind, the stillest it’s been in days, filled with its own sorrows and longing.

Liar, liar, liar.

And Arisu accepts it for what it is. 

When Chishiya says, “Arisu…”, with a certain clarity, it makes Arisu want to cry in relief.

“Welcome back.” Arisu smiles tiredly as he turns around. Chishiya lies beside him, close enough that their faces are inches apart. Up close, he looks a little lost— eyes glassy, unfocused— still reeling from the effects of having his Omega take over. “How are you feeling?”

“Ugh,” Chishiya breathes out shakily. 

Arisu chuckles. “Thirsty?”

Chishiya’s face pinches up uncomfortably. It takes a few moments for him to hear an answer.

“One more,” Chishiya whispers.

Arisu garners the last of his own strength to sit up. “Okay. I’ll be quick.”

It goes in easy; skin slap against skin, and Chishiya doesn’t even make a sound as Arisu brings him to the edge.

For a brief moment, Arisu wonders if he had passed out, but suddenly, Chishiya lets out a barely audible moan, a small shudder running through him. His hole clenches weakly around Arisu’s cock, before it becomes lax.

The same can be said for the rest of Chishiya— the way he slumps onto the bed, unmoving, the familiar coil of tension finally absent. Chishiya blinks; once, twice, each time slower than the last. When his eyes remain closed and his breathing evens out, Arisu knows his heat is finally over.

He waits, still hovering above Chishiya as he waits for his knot to disappear. It should be faster; there are no new heat pheromones being produced to keep his knot from deflating. He brushes Chishiya’s hair to the side, and sighs in relief when the red flush on his cheeks start to slowly fade. His body doesn’t feel as warm anymore, and he isn’t producing as much sweat. 

His knot finally disappears, and he uses the last of his energy to hurriedly clean Chishiya up, before flopping onto the bed. He takes a blanket and covers them both.

It doesn’t take long for Arisu to fall asleep after that.