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refractory complex

Summary:

Outside the second floor janitor’s closet and into the school’s corridors, Shinonome Akito and Kamishiro Rui were almost strangers, the younger boy usually trying to avoid his upperclassman at all costs. But inside that mundane janitors closet, only they knew damn well of the fluids, sweat, and secrets that had defiled the closet within.

Notes:

Heed the tags. This fic contains explicit sex between two fictional high schoolers, and is therefore tagged as underage. Don’t like, don’t read.

-

Edit (2024/1/30) - If you are wondering why this fic has been orphaned (very personal rant incoming):

For months, I had heavily debated deleting this fanfiction because I hate it. I hate the plot, I hate the characterization, I hated writing it, I hate the way it's written, and I hate that it was written during what was probably one of the worst periods of my life. I don't like Project Sekai anymore, nor do I like this pairing. (i still love knmf though)

Due to the positive reception on this story, I have decided to keep this fic up so that new readers and rereaders alike can still enjoy it, as much as I dislike it myself. I have read the newer comments and although I cannot respond to them anymore, I'm glad that you enjoyed this fanfic.

However, it has been orphaned because I do not want to be associated with this fic nor the fandom anymore for much more personal reasons I won't disclose here.

(To my previous Twitter mutuals (if you are reading this): Please don't worry about me, I'm doing much better mentally, and I miss you all dearly. I still don't plan on returning to the fandom, but you guys will forever have a special place in my heart. Thank you for everything <3)

Sorry for the unsolicited rant. Take care everyone, and I hope you enjoy reading this fanfiction.

Work Text:

If Akito told himself two months ago that he’d be in some sort of friends-but-not-really-friends with benefits with Kamiyama High School’s resident weirdo, he’d look at himself with a mix of fear and disgust. Then he’d laugh. Hysterically.

 

And somehow at this very moment, Kamishiro Rui has his arms around Akito’s neck, riding his dick in a stuffy and cramped janitor's closet on the school’s second floor.

 

Just what did he get himself into?

 

But fuck, Akito would be lying if he said Rui didn’t look beautiful so close to him; glazed eyes fluttering open and shut while the older boy whines and gasps above him.

 

"Mmmh.. Shinonome-kun, did you know that despite— ah— being a mammal, platypuses can actually lay eggs? It’s quite interesting, really—"

 

"My dick is up your ass, and you’re talking about how a platypus can lay eggs?"

 

Rui grins, "They can actually produce milk and have four legs-"

 

Words zoom in and out of Akito’s ears at the speed of light. Rui’s like this sometimes when they have sex. He’ll go off on some irrelevant tangent on something; whether it be about his latest project or whatever weirdass trivia he knows. Even while he’s getting his brains fucked out.

 

Akito can't help but roll his eyes lightheartedly. He thrusts his hips up a bit, eliciting a moan from Rui and effectively cutting him off. The orange haired boy smirks a bit.

 

 

 

What a dork.

 

 

———

 

 

Akito can only vaguely remember when their whole.. thing started. He remembers two months ago when he and Rui got stuck in the very same closet due to an unfortunate mishap of Mizuki “accidentally” shoving and locking them inside. Even though they apologized profusely afterwards for the incident, Akito wasn’t buying any of Mizuki’s crocodile tears and pleading, with the former failing to conceal the tiniest crack of a smile on their face.

 

On the contrary, Akito definitely did not mind being stuck in that closet for over half an hour with Rui. Even if he told Akiyama off on how they locked him in with "one of the members of the Weirdo Wombo Combo".

 

The janitor’s closet was much more cramped back then; shelves full of cleaning supplies, stacks of broken chairs, buckets, brooms and boxes occupying the closet walls from 3 sides, leaving no leg room for a single person; let alone two highschoolers.

 

Between the door Akito was leaning on, Rui’s chest flush against his own; their faces mere centimeters away while yellow eyes averted his own, and the purple haired boy unintentionally grinding his thigh against Akito’s dick, both of them were really, really close to each other. Somehow, the two found themselves in such a compromising position.  

 

This was also the perfect time for Akito to get a boner. Seriously, how depraved was he to get a hard-on merely from Kamishiro Rui rubbing his thigh near his crotch?

 

Rui noticed Akito’s erection before he could adjust it using his pockets. Akito doesn’t exactly remember what happened after that. One thing led to another and Rui had his mouth around Akito’s dick; working his tongue around it as the latter muttered profanities under his breath.

 

Akito muffled his mouth using his knuckles, careful not to let any embarrassing noises slip out in fear of being heard and still wanting to keep any last shred of dignity inside him.

 

Rui took notice and immediately stopped; to Akito’s (secret) disappointment. He got up from his knees, pried Akito’s hand off his mouth and leaned close to his ear;

 

 

 

“Hey, don’t cover your mouth. I want to hear all the pretty noises you make.”



And god, it took all of Akito’s perseverance to not explode into a million pieces right then and there.

 

Ten minutes later, Touya unlocked the closet door just in time as Akito redid his belt and Rui wiped some of Akito’s semen off his lip with a paper towel nearby.

 

Touya was confused as to why his singing partner and his upperclassman were acting so weird and giddy. Touya just assumed that maybe the closet was just very uncomfortable and that the two were just relieved to have fresh air. He was also aware of Akito’s… dislike towards their eccentric upperclassman.

 

Before they parted ways, Rui turned to look at Akito one last time, flashed a knowing smirk and winked.

 

The younger boy was about to crumble like a cookie (for the second time that evening), ignoring a still concerned Touya asking Akito why his face was beet red.

 

And that was the day where Shinonome Akito realized he was really, really into Kamishiro Rui.



———



After the closet incident, the two just kept coming back for more. Whether Akito was a tad bit frustrated and needed to release some steam, Rui being more off than usual and just wanted something to forget about the whirlwind of emotions swarming inside him, or when they were just sexually pent up (the two were at that age); Akito and Rui would always find each other in the same closet after cleaning time, usually from a text asking to meet up from one of the two.

 

Akito was never really interested in sex or porn; too caught up with surpassing RAD WEEKEND, practice, singing, friends and Ena, the underlying feeling that he’ll never be as good enough as his teammates, and his life in general to even think about a hot girl he passed by on the street. Sure, he had masturbated a few times in the past just for fun, but he'd always feel sticky with shame after cumming into his hand.

 

But sex with Rui had awakened a whole new side to him, as if Ruis sucking Akito’s cock had also managed to completely rewire his brain that day.

 

Akito would never admit it to anyone (much less to himself), but he lived for Rui’s needy whimpers and moans and the how warm he’d felt around his dick and how good it felt. Sex with his Rui was always so exhilarating, like singing in a crowded livehouse full of cheering fans or the adrenaline and thrill he used to feel after scoring a goal.

 

Only the two of them knew. Their ‘relationship’ was kept hidden shut with a lock and key. Akito would die if anybody knew that he was sleeping around with someone, especially if it was with the guy he claimed to stay away at all costs. Hah, that’s ironic.

 

Outside the second floor janitor’s closet and into the school’s corridors, Shinonome Akito and Kamishiro Rui were almost strangers, the younger boy usually trying to avoid his upperclassman at all costs. But inside that mundane janitors closet, only they knew damn well of the fluids, sweat, and secrets that had defiled the closet within.



———

 

 

“Haa-h.. Shinonome-kun!”

 

“F-fuck— Kamishiro-senpai—keep your voice down!”

 

Mmh— but there's— nobody around this at this time- Everybody’s gone home..”

 

"I know but—“ Akito breaks his sentence with an abrupt moan as Rui suddenly clenches tightly inside him.

 

He feels so fucking good.

 

Purple hair drapes Rui’s face as he lets out a needy whine. The older boy looks really hot like this. Akito wants to kiss him.



———



“Shinonome-kun~”

 

Fuck, Rui sounds heavenly when he moans and whimpers like this, almost like music to Akito’s ears. He’d never expect someone like him to make noises like that. Akito hunches a little closer to the boy on top of him; Rui almost moaning directly in his ear.

 

The sight of Rui’s hips moving up and down and his ass slapping his hips; perfectly hitting inside his dick is mesmerizing. It’s almost like Akito’s a dildo. He feels bad that Rui’s doing all the work here while he’s a sitting duck, but as long as they’re both feeling good and Rui has no protests against it, he doesn’t mind.

 

Akito can’t take his eyes off his uperclassman’s body. Off his neck. Off his unbuttoned shirt. Off his pretty, stupid face and those cheshire-like yellow eyes. Off his lips. Rui’s clinging on to his junior for dear life. It makes Akito’s brain feel so dizzy and feverish, but it makes the pooling warmth in his gut grow hotter and hotter with each passing second.

 

Without thinking, he cups Rui’s cheek and slides his thumb around his lips. Rui’s jolts a bit in surprise, but he gives Akito a fond smile and leans into his touch more. It makes his heart sick. He’s sick. The both of them are. 

 

But hell, Rui’s so goddamn beautiful. Akito just might be the luckiest man on Earth.



———



Rui’s movements start to wear down; his hips going at a much slower pace. He’s probably tired. The steadiness of Akito’s dick slowly going in and out of Rui is edging him so badly.

 

Mind clouded with lust, Akito suddenly grabs Rui’s hips and starts fucking him onto his dick instead; almost as if Rui was the sex toy instead. The other boy is caught off guard, but he soon relaxes into it as he lets out noises of.. protest? Desperation? Pleasure? He doesn’t know. 

 

Akito feels so fucking hot. He can feel the searing red warmth of his cheeks and how hot Rui’s insides are around his dick.

 

"Please, Shinonome-kun, I can’t—ngh—"

 

"Please what? Speak up, senpai." Akito’s practically growling at this point. He doesn’t know why his mood suddenly just swang.

 

Because fuck; he doesn’t know whether it’s just him or the atmosphere around them is way too hot for his own good, or that Rui feels so, so tight and warm around him that it’s making his brain going delirious with want and need. He needs more, more, more—

 

“Please— ah— g-go faster, Shinonome-kun..”

 

And something inside Akito snaps.

 

He grabs the sides of Rui's torso and slams his hips down.

 

"Wait, wha—AH!"

 

 

———

 

 

Akito’s so out of it.

 

He feels like he’s about to combust. Akito can’t see anything clearly, his eyes clenched shut. He can barely make out the noises of skin slapping across the closet. The only thing Akito can feel is how tight and warm Rui is.

 

Akito finally has the strength (or courage?) to look Rui in the eye. The other boy’s eyes are fluttering open and shut. He glances at his exposed chest. His slender neckline. His bare shoulders.

 

It’s too perfect for his liking.

 

He needs to make a mark. Somewhere. He needs to taint the boy, as if he hadn't ruined him already. Rui’s skin will make his canvas. He’ll paint a masterpiece; just like his sister (except he’ll be proud of his work).

 

Akito’s teeth graze over Rui's lower neck and shoulders. He bites into his right shoulder, the shorter male sinking his teeth enough to make it hurt, but not enough to draw blood.

 

Rui wails; whether it’s from pain or pleasure, Akito doesn’t know. He doesn’t care. He wants to make his upperclassman feel good. He wants to feel good. And all he knows is that Rui’s getting tighter and tighter around him.

 

”Holy shit, you're clenching so hard around me. My—ah—dick feels like it’s gonna be snapped in half— You like it when I bite you, don't you?”

 

Rui’s response to that was a slutty moan.

 

 

 

“Holy shit—”



———



”Shit, no matter how many times I fuck you, you’re always so fucking tight.”

 

Akitos gripping his hips so hard that it’s sure to leave bruises. He digs his thumbs into Rui’s hip bones harder; he thinks of the bruises that'll paint the purple-haired boy’s torso in beautiful violet shades, contrasting his pale skin. He wonders if they would compliment his hair color.

 

Every time Rui would change in front of a mirror, he’d be forced to look at markings that he, Shinonome Akito, Rui’s underclassman, etched on his hips. Even though those bruises will turn into a splotchy, ugly yellow-brown color by the end of the week, just turns on Akito even more.

 

“You really are a slut, aren’t you?”

 

Akito’s a hypocrite. He’s the real slut between the two of them. But Rui doesn’t need to know that.



———

 

 

“Hah~ Sh-Shinonome-kun, wait, slow do—"

 

”Slow down? Weren’t you telling me to go faster earlier?”

 

"I know, but—ah!"

 

He's in too deep now.

 

Akito wants to break Rui. He wants him all to himself— like an absolute vice. He wants to see him writhe and squirm and bleed and hurt, and relish in the fact he caused those visceral reactions in Rui, and that he, Shinonome Akito can wipe the smug face off of the Kamishiro Rui with a simple dicking down.

 

 

Fuck, was he always this possesive? It’s not like they were dating or something, anyways. 

 

So— why? Why is something so simple as having sex with another man making him act and think like this?

 

 

 

Is this what Akito was missing out on all these years? 

 

Shit, I’ll fuck— you so hard you wasn’t be able to walk for nh—a week straight.

 

“Mmh— please-"



Akito latches his mouth on one of Rui’s nipples, lapping and sucking on the bud. He takes the other in his fingers and rubs it. The other boy is moaning really, really loudly now. Rui covers his mouth with his hand; probably aware of how much noise he’s making.

 

Akito doesn’t like that. Why does he get to be a hypocrite about it now? He tugs Rui’s hand from his mouth and leans even closer to him.

 

“Ah- ah, don’t cover your mouth. I want the whole school to know how much of a whore you are.”

 

They both know that there’s nobody at this hour. Akito doesn’t care. He swears he can hear voices down the corridor. Is it his imagination or is his brain so delirious that it’s making stuff up? Akito doesn’t care.

 

Akito sucks on Rui’s neck, leaving an aggressively red hickey. Rui immediately throws his head back in ecstasy, giving Akito more access to his neck.

 

He could bite into Rui’s neck, needily sinking his teeth in his collarbone as if he were a vampire feasting on a poor human’s blood. He could mark Rui’s neck, littering him with hickeys and bites; showing the world that Kamishiro Rui was his, and only his— but the little rational part left in his brain decides to leave marks on his lower neck and chest where it would be less visible. As weird as Rui was, Akito knew he had some dignity.

 

Rui’s whimpers are cute when Akito bites and sucks at his skin. He looks and sounds and feels absolutely pathetic like this. Akito doesn't mind though.



This isn’t enough. Akito needs more. There's something missing. Something that he can't exactly put his finger on. It’s driving him insane. He needs something, something more than just this; whatever this is supposed to be and whatever they have right now.

 

 

 

Wait.

 

 

 

”Hah, Rui- Say my name— my first name.”

 

 

 

“Wait, are you sure—”

 

 

 

Say. It.” Akito thrusts his own hips up with almost all his might, puncturing his words.

 

 

 

Ah-! Nhh— Akito!

 

 

 

Jackpot.



 ———



There's something so deeply intimate about someone calling your name. Sure, An, Touya and his sister call him by his first name. Even Kohane is working on calling him by his first name instead of his last (because of how “We’ve been singing together for so long and you still call me by my last name!”).

 

And yet with Rui, it’s… different. There's just something about the way his name rolls off the older’s tongue. Longing for need and noises of lust.

 

“Ah-Akito— Hah-Akito.. Akito-k—AH!”

 

He’s slamming Rui’s hips at an impossible pace. Faster and faster at every slap of their skins; while Rui let out noises of pleasure, his eyes glazed over and his tongue slightly sticking out.

 

 

"H-hah~ Aki—to~h-kun— I’m about to cum-"

 

"Mmh- me too— lets cum together—"

 

Akito (finally) kisses Rui, swallowing both their moans and gasps. He slips his tongue inside, feeling the warm, wet expanse of Rui’s mouth.

 

Akito reaches down to Rui’s neglected dick, already leaking with precum. He jerks him off and Rui moans into his mouth even more.

 

The two orgasm, Akito finishing inside the older boy. He opens his eyes and sees Rui.. absolutely fucked out. Parts of his bangs are stuck to his forehead while the other strands hang over his face. His sweat is illuminating his face even in the now dim light of the closet.

 

Akito could see tears dripping down his face; his red eyeliner ruined.

 

Oh fuck.

 

Did he hurt Rui?

 

Rui immediately collapses his face on Akito’s shoulder as he pants heavily.

 

 

 

Akito really pushed him to his limit, huh?

 

 

 

A wave of guilt overrides the younger, almost overwhelming him.

 

 

 

Fuck.

 

 

 

He fucked up so bad.

 

 

 

Why is he so stupid??

 

 

 

"Oh my god—Shit— dude, are you alright?"

 

"Y-yeah I’m fine, I just—hah—need to catch my breath and calm down..."

 

 

 

In all honesty, Akito doesn’t really know what to do in a situation like this. He’s not exactly the best at expressing his actual feelings, much less at a time like this. He slowly rubs circles on Rui's back, hoping that'll calm him down. Rui lets out a content sigh. It’s working, thankfully.

 

While the two sit there in comforting silence, Akito thinks. A lot. Which is uncommon for him, really.

 

Strangers don’t fuck each other in a dingy janitors closet on a whim. They should’ve done it in the nurse’s office or at least in a classroom, where there’s more room.

 

Friends don’t whimper out the others last name. Akito forced Rui to use his first name. (That’s awkward.)

 

Lovers would share a passionate kiss and hold hands during sex. They’d ask each other whether they could stop, slow down, or go faster.

 

(Fuck, he feels really guilty now.)

 

 

 

If they weren’t strangers, friends, or lovers, then what were they?

 

 

 

The two sit in soft breathing and solitude as minutes pass; their heartbeats thumping against each other. Akito shifts in his makeshift chair of a cleaning stool and a few boxes.

 

 

 

Akito slowly lifts Rui’s hips off his now flaccid dick and places him on the chair. He pulls up his boxers and pants, grabs a paper towel from a shelf and starts wiping his cum between Rui's thighs.

 

"Wait, Shinono— Akito-kun, you really don’t have to! I can take a shower at my house—"

 

”Nah, I made a mess. I should clean it up,” he grumbles.

 

”But—“

 

”Oh c’mon, why are you so flustered about this all of a sudden? We just had sex.”

 

”It was my idea to have sex without a condom—“

 

”Just relax, Kamishiro-senpai, and let me do all the work here.”

 

”Alright.. fine.”

 

 

 

Akito finishes cleaning up the older boy and discards the towels in a nearby garbage bag. He notices the knocked over bottle of lubricant and hastily shoves it inside his pocket. Thankfully, nothing was spilled. He picks up Rui’s discarded pants (Seriously, why does the guy not wear any underwear?) and tosses it to him.

 

Akito leans against the closet’s door, feeling exhausted for some reason. He buries his head in his knees. A clink can be heard as Rui finishes doing his belt.

 

 

 

Heavy silence fills the room.

 

 

 

"Uhh.. shit—"

 

“Hmm?”

 

”Well— Sorry for biting you without your consent. I just got— way too into it. Fuck. Like— if you don’t wanna do this anymore I totally understand and feel free to report me to the police or someth—“

 

“Ah, fufu~ It’s fine!” Rui chides as he dangerously leans over and places a finger on Akito’s lips. “In fact, feel free to use me however you want. I don't mind at all.”

 

Wait, what?

 

“N-No, I won’t. I shouldn’t. I mean, you’re human too, you know? You have feelings and limits and— Please, just speak up if I ever overstep your boundaries, okay?

 

“Akito-kun…”

 

”And sorry for calling you a slut and whore and that stuff. You’re none of those things. You’re.. really nice. And pretty. And cool. And really smart. You could even be the next Einstein or whatever. I can’t believe I’ve misjudged you since the beginning.”

 

“Oh.. Thank you, Akito-kun. That might be one of the nicest things anyone’s ever said to me,” he smiles.

 

“..It’s nothing. Really.” 



And at that moment, Akito has no reason to lie. He smiles, genuinely.



 ———



“Hey Akito, would you like to go on a date with me?”

 

“A… date?”

 

”Yep! Somewhere like an aquarium, or a bowling alley maybe. It doesn’t matter.”

 

”Uhh, then how about we go to a café? I heard there was a new pancake place that recently opened up nearby. We could uh— check it out together? Maybe on the weekend. I’ll text you.”

 

“Yeah, that sounds nice.”

 

”Yeah.”

 

 

"By the way, you call me ‘Rui’ now.”

 

 

 

Huh?

 

 

 

“Wait, I can’t and I shouldn’t, really—“

 

“Well, considering your ‘dick was up my ass’ and that I actually said your first name during sex, it would also be fair for you to call me by my first name, hmm?”

 

“Shit, please don’t remind me of that.”

 

“Hehe. But seriously, thank you, Akito-kun. I had a lot of fun.” Rui smiles. Akito can’t take it anymore.

 

”Oh. No problem.. Rui-kun.”

 

Akito’s heart feels like it's going to explode for the billionth time that evening. Rui’s legs tremble as he stands up.

 

“Hey, are you sure you're gonna be fine? Just take it easy for today. Sorry again.”

 

“Yeah, I’ll just rest at home. I don’t have practice with my troupe later, so—“

 

 

 

Wait.

 

 

 

Practice?

 

 

 

His squad. They agreed to practice in the SEKAI earlier. At 5 o’clock.

 

Akito whips out his phone and sees multiple text messages from (mainly) An and Touya flooding his lock screen. 

 

The lock screen displays the numbers 5:10.

 

They agreed to meet in the library. Touya has after-school library duty. An wanted to keep him company.

 

They’re still inside the school building. Waiting for Akito.

 

 

 

Oh, fuck.

 

 

 

“Oh, I actually have practice with my group right now— I’ll see you later Rui— bye and thank you have a nice day!” Akito sprints away to the library before Rui could respond.

 

 

———



Out of breath, Akito trudges his way inside the library.

 

And he's met with a grimacing, disgusted An and a very concerned and startled Touya.

 

 

 

Oh.

 

 

 

Oh no.

 

 

 

“You guys heard us, didn’t you?”

 

“Louud and clear,” An grimaced, while Touya could only muster an embarrassed nod.

 

“Oh for fucks sake Akito, why?" An yells.

 

"Alright, look. It’s a long story that I do not want to tell you. And this— this thing with me— between me and Ru- Kamishiro-senpai, stays between us— and us only. And An, if you babble about this to Akiyama, I swear—"

 

“Alright, alright relax— I’ll keep your little…affair a secret. My lips are sealed~” An says, making a zipping motion across her lips with her index and thumb.

 

”What thing between you and Kamishiro-senpai?” Touya deadpans. Akito smiles at that.

 

"Anyways, we’re late for practice. We shouldn’t keep Kohane waiting any longer. Actually, I’ll just tell her we’ll be running late because somebody was too preoccupied with—"

 

”An, just drop this, please—“

 

”I agree with Shir… An. We should atleast head home and change out of our uniforms.”

 

Both of them shut up at that.

 

 

———

 

 

The trio walk to WEEKEND GARAGE in awkward silence. They stop at a crosswalk. An starts loudly counting the number of seconds before the “walking stick figure thingy comes on the little screen”. Touya laughs a little at her antics. Akito just stares ahead and sees—

 

Rui. Kamishiro Rui. Across the street. Looking right at him.

 

Normally, Akito would’ve dreaded seeing him outside school. Especially while he’s with An and Touya. And they know about their.. relationship.

 

But for some reason, he feels.. happy. His heart feels warm.

 

Akito waves to Rui. Rui waves back and flashes him his signature smug grin. Akito laughs a bit and smiles fondly at him.

 

He blinks, and Rui is walking away. Was he just imagining things?

 

“Akito? Akito.. We can cross the road now. Were you saying bye to Kamishiro-senpai?

 

”Did you really have to eyefuck him infront of us? Hearing you guys banging was enough for our poor, virgin e—“

 

“Oh shut up, An!”