Haikyuu Shirabu - Blog Posts

Rivalry: Shirabu

"You’re insufferable."

That was the last thing you hissed at Shirabu Kenjirō before the attending physician turned, red-faced and barely breathing through his nose, and barked loud enough to make half the emergency department flinch:

"Both of you—out. Now."

But that wasn’t how the day started.

It started with an argument.

“0.25 milligrams,” you said evenly, eyes flicking from the tablet to the patient. “He’s seventy-two. With a documented history of hepatic impairment. We’re not doing a full dose.”

Shirabu didn’t look up from the vial in his gloved hand. “He’s metabolizing fine, vitals are steady, and the attending’s notes—”

“—don’t override the risk of oversedation,” you cut in, sharper this time. “We need to adjust it. I already cleared it with Pharmacy.”

He glanced at you then, that cool clinical stare that always made your blood boil. “I triple-checked the chart. We’re wasting time.”

“You’re going to put a seventy-two-year-old man into respiratory depression.”

“And you’re going to let him seize while we argue.”

Your mouth opened, ready to fire back—and that’s when it happened.

The patient’s monitor screamed.

A violent shudder rocked through his body, limbs jerking, back arching off the gurney.

“Shit!” you both snapped in unison.

“Code blue!” you shouted into the hallway. “We need Ativan, now!”

The room exploded into motion. Nurses poured in. A crash cart slammed into the doorframe. Someone started chest compressions. And you—helplessly gripping the IV tubing you hadn’t primed—stood frozen beside Shirabu, both of you silent, horror pooling in your throats.

The attending shoved through seconds later, eyes wild. “Get the hell out!”

__

Now.

“You’re done here for today,” the attending had spat, voice blistering. “Go help the nurses. Clean linens, supply runs, sit with waiting patients—I don’t care. You’re both liabilities right now.”

Shame swirled in your gut. Not because you were wrong—no, you were right about the dosage—but because you’d let Shirabu get under your skin. Again. And someone paid for it.

You stormed out of the trauma bay, white coat flaring behind you like a war banner, and Shirabu followed half a step behind, not saying anything yet, which was somehow worse. The moment you passed the threshold into the hallway, you whirled on him.

“You’re unbelievable,” you snapped. “I told you the dose was too high—”

“And I told you I triple-checked the chart,” he said coolly, not even looking at you. “But of course, you think you’re always right.”

“Because I usually am. You never listen to anyone, you just go with your arrogant little gut—”

“My gut?” He turned then, sharply, eyes like frost over steel. “You mean the one that finished top of its class in diagnostics and surgical prep?”

“Oh, congratulations,” you snarled, hands tightening into fists at your sides. “You got a gold star while you ignored the actual patient in front of you.”

"You don't know how to read the room half the time," he snapped. "You’re so busy being morally superior, you forget we’re on a clock. You want to argue philosophy while someone’s bleeding out? Grow up."

You could feel your pulse in your teeth. Heat flooded your face. You weren’t even sure when the two of you had gotten so close—but now he was right in front of you, all sharp lines and cold fire, his jaw tight, breath shallow, his stupidly pretty mouth parted like he had one more insult on the tip of his tongue.

“You’re a condescending prick, you know that?” you hissed. “Always acting like you’re the only one with a functioning brain.”

“And you’re a self-righteous control freak who can’t take being challenged.”

“You don’t challenge, Shirabu. You bulldoze.”

“And you let your emotions run the whole goddamn room.”

You stared at him, breathing hard, chest rising and falling as if you’d just sprinted across the hospital. He was infuriating. Arrogant. Cold. The kind of person who drove you absolutely insane. And yet—

His mouth was moving again, eyes still sharp—but all you could think about was how close he was. How flushed his skin had gotten. How your stomach hadn’t stopped twisting since that patient flatlined. The adrenaline still burned in your chest like a furnace. And how long had it been since anyone had touched you, really touched you—looked at you like more than just a coat with a badge and a clipboard?

When was the last time I had sex?

The thought shot through your brain like a live wire. The frustration, the tension, the sheer exhaustion of existing inside a pressure cooker like this day after day—it all exploded behind your eyes.

Sixteen-hour shift. A missed lunch. A mistake that rattled your bones.

Fuck it.

You grabbed the front of his coat, yanked him forward, and shoved him—hard—into the nearest door. It flew open with a groan, revealing the dim, cramped supply closet, the air inside cold and sterile and completely indifferent to what was about to happen.

You shoved him inside.

He barely had time to stumble backward before you stepped in after him, kicked the door shut with a sharp slam, and crashed your lips to his.

It was a mistake. It was impulsive. It was heaven. A desperate, furious kind of salvation.

Shirabu froze for half a second—just long enough for you to think oh god, what have I done—before he growled low in his throat and kissed you back like he’d been waiting for this, like he had been burning too. His hands found your waist, fingers digging into your hips like he wanted to leave bruises, like he needed to anchor himself to something real.

You gasped when he walked you backward, guiding you with rough, hurried steps until your back hit the shelves. The plastic bins and paper-wrapped gauze rattled with the force of it.

“This,” he rasped against your jaw, breath hot and uneven, “is the stupidest idea you’ve ever had.”

“Shut up,” you whispered, clawing his lab coat open. “I don’t want to hear your voice right now.”

“Then stop giving me reasons to use it.”

You dragged him down again.

The kiss deepened, turned frantic, messy. Teeth. Tongue. Hot breath and sharp nails. The smell of antiseptic and the sting of fluorescent lighting faded into nothing. The only thing you could feel was the press of his mouth, the grind of his body against yours, the heat blooming low and hungry in your belly.

He yanked your scrub top up, pushed it out of the way with impatience, and bit down along your collarbone like he meant to leave a mark. You gasped, nails digging into his shoulders. You wanted him closer. You wanted him rougher. You wanted to feel anything but the burn of regret and the echo of the code blue.

And you let him.

Because you’d been burning for too long.

And because, for once, Shirabu Kenjirō had finally shut the hell up.

Rivalry: Tendou

You had mastered the art of keeping your cool.

In school, you were the picture of perfection—organized, ambitious, meticulous in everything you did. You had a system for everything: color-coded planners, perfectly curated study schedules, and a resume that outshined most adults in the workforce. When you took on the role of manager for the Shiratorizawa volleyball team, it wasn’t because you particularly cared about the sport—it was another challenge to conquer, another achievement to stack onto your spotless record.

But then there was Tendou Satori.

A gremlin in human form.

He was your one roadblock to peace, the singular entity determined to ruin your composed demeanor. From the first day, he had made it his mission to push your buttons. Whether it was teasing you during practice, dramatically announcing your arrival every time you walked into the gym, or deliberately causing mild chaos when you were trying to focus—he was always there, getting under your skin.

And today? He was worse than usual.

“Oi, Manager-chan, you look tense~” Tendou’s mocking voice rang through the gym as you diligently took notes on the team’s stats. “Is the weight of perfection getting to ya?”

You exhaled sharply, choosing to ignore him.

Big mistake.

Tendou, sensing weakness, immediately invaded your space, leaning over your shoulder to peer at your clipboard. “Ooooh, look at you, all serious and focused.” His smirk widened as he snatched the clipboard from your grasp before you could react. “Hey, Semi, you see how intense she gets? It’s almost scary.”

Semi barely glanced up from where he was stretching. “Tendou, give it back before she kills you.”

“Oh, but she’d never. She’s too put together for that.” He turned back to you, grinning. “Right, Manager-chan?”

Your eye twitched.

“You’re making her mad again,” Ohira noted from across the gym, shaking his head. “Not a great idea.”

“She’s always mad,” Goshiki mumbled, tying his shoes. “Maybe she should just—”

“Finish that sentence, Goshiki, and I’ll have you running laps,” you snapped, finally lunging for your clipboard.

Tendou yanked it just out of reach, stepping back with a playful glint in his eyes. “I swear to—Tendou, I am not in the mood for this!” you snapped, lunging for it again. He effortlessly dodged, making a show of flipping through your neatly written notes.

“Wow, you even color-code these?” he mused. “You are a perfectionist.”

Your patience snapped.

“Give it back, Tendou, or I swear—”

“Or what?” His smirk widened. “You gonna scold me? Ground me? Maybe write me up in one of your little reports?”

“Manager,” Shirabu called over, “just hit him.”

Your fists clenched, but before you could blow up completely, a voice cut through the tension.

“Tendou,” Ushijima’s calm yet authoritative voice silenced the entire exchange. “You are wasting time.”

Tendou sighed dramatically. “Awww, but Ushi, I’m just having a little fun—”

“Tendou.” Ushijima’s stare was unwavering.

With an exaggerated sigh, Tendou reluctantly handed the clipboard back. “Fine, fine. No need to get all intense about it.”

“You are intense,” Yamagata muttered under his breath, but it was enough to make Tendou chuckle. You snatched the clipboard from his hands, shooting him a murderous glare before stomping back to the bench. The rest of practice continued with you actively ignoring him, though you could feel his smug gaze on you the entire time.

After morning practice, you thought you had finally earned a few moments of peace, but of course, that was never the case with Tendou.

It started when he 'adjusted' the team’s training schedule—doubling the number of drills without any warning, replacing the usual post-practice cooldown with an endurance challenge that he personally designed, and worst of all, swapping your neatly organized equipment labels with absolute nonsense.

The first red flag was Ushijima approaching you, arms crossed. "Manager. Tendou says you approved these changes."

You blinked, gripping your clipboard. "I absolutely did not."

Ushijima simply nodded. "I thought so."

Tendou, leaning against the net with a smug grin, waved lazily at you. "Ohhh, Manager-chan, you wound me. I thought you’d appreciate my initiative."

Your blood boiled.

“Tendou," you said through gritted teeth. "What did you do?"

“Oh, nothing serious~ Just thought the team needed a little extra spice. Gotta keep 'em on their toes, y’know?"

The entire team was now staring.

"Fix it," you snapped, already pinching the bridge of your nose.

“Oh, but it’s too late! I’ve already made some executive decisions. Like renaming the storage bins! Now instead of boring labels like ‘knee pads’ and ‘water bottles,’ we’ve got ‘Mystery Box #1’ and ‘Cursed Liquids.’”

You stared at him, absolutely seething.

Ohira muttered, "...‘Cursed Liquids’?"

Tendou beamed. "Oh yeah! And the balls are labeled ‘Fragile: Handle With Extreme Caution.’ I’m really fostering an atmosphere of uncertainty and excitement."

Yamagata walked over to a cart and squinted. "Why does this one say ‘Definitely Not Volleyballs’—?"

He opened the cart and yelped as half the contents spilled onto the floor.

Tendou laughed. "Oops. Guess I should’ve labeled that one better."

You could actually feel your soul leaving your body.

"TENDOU, YOU ABSOLUTE MENACE!" The words ripped out of you like a volcano finally erupting, and the entire gym fell into silence. You marched up to him, fists clenched so tightly your nails dug into your palms. "You don't just get to—" you sucked in a breath, visibly shaking with rage. "Undo. Everything. Right. Now."

Tendou merely tilted his head, hands still stuffed in his pockets, eyes gleaming with amusement. "Oooh, scary."

That was it.

With a frustrated noise, you threw down your clipboard and turned on your heel, storming out of the gym before you could do something truly regrettable—like chucking a volleyball at his smug face.

The doors slammed shut behind you, leaving behind a heavy silence.

Semi exhaled. "Okay, yeah, that was bad."

"Dude," Yamagata muttered, shaking his head. "That was the loudest she’s ever yelled."

Ushijima, ever direct, simply said, "You should apologize."

Tendou scoffed. "Apologize? For what? I'm fostering team morale!"

Semi arched a brow. "No, you’re fostering a migraine."

"And an aneurysm," Shirabu added dryly.

Ohira sighed. "Tendou, come on. We all know you do this because you like her."

Tendou exhaled through his nose, tilting his head. "Well, yeah. Obviously."

The gym fell into silence.

Goshiki blinked rapidly. "Wait, what?!"

Semi threw his hands up. "Oh, now you admit it?! After months of this? After making our manager nearly combust on a daily basis?"

Tendou shrugged. "What can I say? It’s fun. She’s cute when she’s pissed."

Ohira groaned. "This is so much worse."

"Yeah, no kidding," Yamagata muttered. "Dude, go fix it."

Ushijima nodded. "You should apologize."

Tendou let out a dramatic sigh, already making his way toward the exit. "Fine, fine. But if she throws something at me, just remember—I did this for you guys."

Shirabu scoffed. "No, you’re doing this for you."

"Same difference!" Tendou sang, pushing through the doors.

"Oh, this is gonna be a disaster," Semi muttered.

__

Outside, your footsteps pounded against the pavement as you stormed away from the gym, rage thrumming under your skin like an electrical current. The nerve of that man—! You were going to kill him. No jury would convict you.

Behind you, quick footsteps echoed. You didn’t have to look to know who it was.

"Of course," you seethed under your breath.

"Oi, Manager-chan!" Tendou’s voice rang out, obnoxiously cheerful despite the fact that he had just single-handedly ruined your entire day. "Wait up!"

You didn’t wait. Instead, you walked faster.

"Hey, hey, don’t ignore me! I came to apologize!"

His mock sincerity made something snap inside you.

"Go to hell, Tendou!" you barked over your shoulder, barely slowing down.

Tendou let out a dramatic sigh, then jogged ahead, stepping directly into your path before you could escape.

Your body nearly collided with his. He was too close, all lazy grins and infuriating confidence, like he hadn’t just been the source of your current blood pressure crisis.

"Move, Tendou," you snapped, your voice low and dangerous.

He put a hand to his chest, feigning offense. "Oof. I come all this way to make amends, and that’s how you treat me? Harsh."

"If this is another joke, I swear to god—"

"No jokes," he interrupted smoothly, his smirk still present but eyes sharp. "I’m serious—okay, mostly serious. I did kinda push you hard today, huh?"

You scoffed. "Oh, so you do have a functioning brain?"

"I do, in fact. And contrary to popular belief, I also have self-awareness." His smirk deepened, eyes glinting with something unreadable. "I just happen to enjoy making you... expressive."

Your teeth clenched so hard your jaw ached. "I am expressive. You’re just a walking migraine."

Tendou hummed, looking you up and down like you were an interesting puzzle to solve. "Mmm... no, I think you’re a little too put together, actually." His grin sharpened, a slow, deliberate smirk. "All wound up so tight, afraid to let loose."

Your rage flared hotter than ever.

"I AM NOT WOUND UP," you spat, fists curling at your sides.

"Oh, no?" His gaze flickered down—just for a split second—noticing the way your hands shook with restrained anger, the tension in your shoulders, the way your breath came out just a little too fast.

Then, his smirk turned dangerous.

"Prove it."

Your eyes narrowed. "Excuse me?"

Tendou tilted his head, mocking thoughtfulness, his voice casual yet edged with something wickedly taunting.

"Go out with me. Saturday."

Your entire brain short-circuited.

"WHAT?!"

His grin only widened. "C’mon, Manager-chan~ What’s one little date?" His tone was syrupy sweet, full of mocking amusement. "You said I was wrong—so show me."

You opened your mouth—ready to refuse, ready to tear him apart—but then you saw it.

Something hidden beneath the teasing.

There was a challenge in his expression, a dare, a glint of something genuine underneath all the bravado.

Your pulse spiked.

You were going to regret this.

You exhaled sharply, glaring daggers at him. "No pranks?"

Tendou raised three fingers, mock solemn. "Scouts honor."

You stared him down, searching his face for any sign of deception. His smirk remained, but there was a flicker of something undeniably serious in his gaze.

Before you could think better of it, before your rationality could kick in, the words slipped past your lips.

"Fine."

Tendou’s grin split into something truly devious.

"That’s my girl."

Your entire body jerked with fury. "Don’t. Say. It like that."

But he was already walking away, laughing as he turned his back on you, hands tucked behind his head like this was just another game he’d won.

"See you Saturday, Manager-chan~"

You stood there, rooted to the ground, your mind replaying everything that had just happened.

And then reality hit you like a truck.

Oh. Oh no.

WHAT DID YOU JUST DO?

BEHIND EVERY SETTER

IS A SETTER WHO HAD TO GIVE UP HIS DREAM FOR HIM

Too Childish

Pairing: Setters x GN!Hashira!Reader

Prompt: While at the Hashira meeting, Y/n is told that they are a childish hashira and they need to be serious in situations. Y/n’s demon slayers or team finds out and they try comforting their hashira.

A/n: This idea came from my shower thoughts LMAOOOO also you are 5’2 in this story

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It was a normal day, everyone was training and working hard. Even both of your tsugoku’s, Akaashi and Shirabu, were working hard.

Your Kasugai Crow came into your office you shared with your tsugoku’s flew onto your desk and announced that there was a hashira meeting.

You smiled widely knowing you get to see your other hashira friends.

You waved goodbye to Akaashi and Shirabu then jumped out the open window, much to their dismay.

You quickly ran over to the master's mansion and saw most of the hashira present. You giggled and jumped onto one of the hashiras.

“Ahh!” They exclaimed. They strengthened their hold on you before you fell off

“Heyyy [random/name]! Let’s play after this meeting!” You shook the hashira by the shoulders. [Random/name] looked at you, “Can you get anymore annoying?”, you looked at him confused.

“You're so childish! Grow up. You can't be all giggles and rainbows while fighting Muzan or demons” [Random/name] said. Another voice spoke up, “You also eat too much sweets by the time we have our battles with Muzan, you're going to be fat and out of breath”.

Ouch.

But before you could even speak, you heard something from another hashira.

“I wonder why they became hashira in the first place”

“Yeah, I honestly thought Akaashi was going to be one instead of them”

You were sad :(

How could they? Your own friends.

Master’s door slid open, meaning the meeting had started.

During the meeting you kept thinking, I’m not fat! I’ll show them I can be mature!

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On the way to your mansion, you were craving for sweets,

But then you realized, you gave them to the master’s children.

You kept on walking and saw your mansion, you slowly smiled seeing Oikawa and Atsumu arguing who was going to give you sweets first, while Kogane was eating some of it behind them.

Akaashi, Semi, Futakuchi, Shirabu, Kageyama, Kenma, and Sugawara were getting annoyed or they stayed neutral.

Your smile dropped after remembering the other hashiras' words. Your team, or should I say family, saw you and welcomed you back with the sweets and their smiles

Excluding Shirabu and Futakuchi

You muttered a small “Thank you” and walked past them.

“Well that was weird” Oikawa stated, processing what just happened. Akaashi nodded in agreement.

“They would usually be excited to come back here and eat the sweets after the meeting or a mission,” Sugawara said. The group of boys walked inside and followed their hashira. “Y/n-sama, would you like some sweets?” Asked Kageyama.

You turned around and they had noticed, you had no smile on your face.

Infact, Kenma noticed no emotion in your eyes.

You gave them a small smile, which kind of relieved them, and said “No, thank you for the offer though” you bowed, turned around and headed towards your office.

The boys were thrown off, no way you would reject sweets like that.

Especially if they were your favorite.

“What the hell?” Atsumu said in shock.

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For the past few days, you haven’t smiled or ate any sweets. You kept training and training. You also busied yourself with paperwork so you could avoid the boys.

You were getting skinnier, but you were eating.

Akaashi tried asking what was wrong.

Key word: Tried.

You would always try to distract him or change the subject. Your boys were saddened, not knowing what was wrong and not being able to help you with it. Shirabu had enough of it and sent a letter to one of the hashiras(One who trains the aces) and got a letter back stating what had happened during the hashira meeting.

The boys were mad mad

They headed straight towards you, you were hanging up some blankets and shirts.

“Hey,” you jumped at Kenma’s smooth and soft voice. You turned around and saw the boys gathered in front of you.

“Hey, what's going on?” You said, confused. Oikawa walked up to you and grabbed your hand into his and led you to the mansion and sat you down on the wooden plank.

“Why didn’t you tell us?” Stated Semi.

“I don’t know what you are talking about”, you really don’t want to talk about it. You can see some of the boys are losing their patients.

“YOU KNOW DAMN WELL WHAT WE ARE TALKING ABOUT!” Yelled Atsumu.

He grabbed you by the collar of your shirt and stared at you with his piercing brown eyes. Akaashi and Futakuchi both grabbed Atsumu by his shoulders, but Atsumu brushed them off.

“Why didn’t you tell us that the other hashiras called you names!?” Atsumu continued to yell in your face.

Your vision started to get clouded by tears, Atsumu’s eyes softened and he pulled you into his embrace.

He apologized for yelling at you and tried to sooth you.

Kogane being babey started smacking Atsumu multiple times.

You laughed.

The boys, except Atsumu, smiled. Akaashi patted you on the head with a smile on his face. He even wiped your tears.

WHAT A SWEETHEART😫❤️

“Now explain to us why you’ve been avoiding us,” Shirabu looked at you with his arms crossed. You fiddled with your fingers while looking down.

“I thought I needed to be a better hashira for you guys. I’m way too childish and I’m pretty sure you guys don’t want to take care of me and play with me anymore and focus on your training-” You were cut off by Kageyama shoving a lollipop in your mouth.

“Yeah, okay. If we didnt want to play with you, we wouldn’t want to hurt you and not play with you” Kageyama had sincerity in his eyes as he said that.

*Cricket Noises*

“Did that even make sense?” questioned Sugawara.

“What Tobio-chan was trying to say is, we enjoy playing with you and taking care of you regardless if we’re busy or not” Oikawa said with a smile.

Kogane piped up, “And Kogane likes taking care of Y/n soooo much that Kogane will cuddle Y/n when sleeping every day!!”,

Kenma, Sugawara, Akaashi, Oikawa, and Atsumu took offense to this.

“Okay…. Anyways, you shouldn’t change yourself to be a better person. People will love you the way you are, including us” Semi said confidently.

“As long as we’re alive and going, we’ll take care of each other” Smirked Atsumu. You smiled at them widely.

“Thank you!”, They pulled each other into a group hug much to Shirabu’s and Futakuchi’s protests.

The boys were relieved and happy they got you back to normal. They promised each other they will protect you at all costs.

That was until the battle with Muzan and the upper moons, their promise was not fulfilled.

"CAW CAW [BREATHING STYLE] HASHIRA, L/N Y/N, HAS BEEN KILLED BY UPPER MOON THREE"

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Credits: @minnies-mochi