I come back to your inbox humbly asking for an angsty hurt/comfort(?) scenario with Chuuya amd Dazai, basically during a mission or like some agency case an ability user with a mind control ability hijacks Readers body and is basically holding them hostage until Chuuya/Dazai figure out a way to free them(i dont think Dazai can just nullify it by touching reader if we take into account his way of nullifying Qβs ability)
Parasite I Dazai Osamu x Platonic! Reader x Chuuya Nakahara
Summary: Chuuya and Dazai charge in to pull you back from the brink, turning a near-disaster into a reminder that youβre stuck with each other.
A/N: Sorry for taking so long on this one, love! Sometimes life (and stories) donβt move as fast as I want them to. Thanks a ton for hanging in there with me β youβre the best. Hope you enjoy it!β€οΈ
TW: This story includes themes of mind control and possession, physical injury, and psychological distress. There are scenes involving a parasitic invasion, blood, and medical treatment. If any of these topics are difficult for you, please take care while reading.
MASTERLIST
They hadnβt expected things to go this wrong.
It was supposed to be a routine retrievalβintel said the ability user was low-threat, known for petty blackmail and mind games, nothing more. The three of you had split off from the rest of the team to corner him in a derelict warehouse on the outskirts of Yokohama. No signs of resistance. No signs of a trap.
Then the screaming started.
By the time Chuuya and Dazai fought their way into the building, you were already gone. Not physicallyβyou were still on the comms, briefly. Just long enough to tell them to turn back, that something was wrong, before your voice warped into something else entirely.
Then silence.
Now, they were running.
The warehouse was coldβtoo cold. The concrete walls echoed with nothing but the frantic drag of footsteps and the low, panicked breath of Chuuya Nakahara as he sprinted through the dark corridor.
βSheβs in here!β he barked into his comm, boot colliding with the steel door.
Dazai appeared a moment later, his usually unreadable face pulled tight with tension. βWe donβt have time. The longer that parasite stays latched, the more damage itβs doing.β
βThen letβs move,β Chuuya snapped, throwing his shoulder against the rusted door.
Inside, they found you.
You stood in the center of the room, still as stone, head tilted at a wrong, unnatural angle. Your eyesβusually warm, so full of fightβwere dull. Off. Watching them with the eerie calm of something that wasnβt you.
βAh,β your voice cooed, laced with something foreign. βThe mafia's little dogs have come to fetch their pet.β
Chuuyaβs knuckles went white. βGet the hell out of her.β
Dazai held out an arm, cautioning him. βThatβs not her talking.β
You smiled, slow and venomous, and stepped forward. There was a twitch in your jaw, a brief flash of resistance that flickered and died just as quickly. It was like watching a puppet trying to chew through its own strings.
βSheβs fighting it,β Dazai said quietly. βBut not for long.β
The parasite wasnβt like Qβs abilityβit wasnβt just about madness or manipulation. This was physical. A parasitic ability, burrowed somewhere inside your body, anchoring itself in your nervous system. Dazaiβs nullification could workβbut only if they exposed the core of the parasite.
Which meant hurting you.
Dazai pulled something small and black from his coat: a stun-needle Chuuya had stolen off the black market last year. βWe donβt have another option.β
βIβm not hurting her,β Chuuya said immediately. βYou know I wonβt.β
βThen I will,β Dazai said softly. βBut you need to hold her down.β
You lungedβtoo fast, too sharpβand Chuuya caught you mid-sprint, wrapping his arms around your thrashing form, trying not to hear the animal sounds you made as the parasite fought back.
βIβve got youβIβve got you, okay?β he whispered, holding on even as your body jerked violently in his arms. βYouβre gonna be fine, just hold onβhold on for me, please.β
Dazai moved fast. Ripped open the back of your shirt, fingers pressing around your spine until he felt the heatβan unnatural pulse just beneath your skin. The parasite coiled there, near your shoulder blade, squirming at his touch.
βHere we go,β he murmured.
The blade cut deep. Chuuya flinched as you screamedβyour own voice, this time, not the puppetmasterβs. Your head thrashed, your hands clawing at Chuuyaβs sleeves, but he didnβt let go.
βI know, I know, Iβm sorry,β he said, choking on the words. βIβm so fucking sorry.β
Dazai reached into the wound, fingers blood-slick and surgical. Then-
Got it.
The thing squirmed between his fingers, leech-like and black and twitching.
With a flick of his ability, it crumbled into dust.
You collapsed.
Silence.
You woke to soft light and sterile sheets. Your whole body achedβlike fire under your skinβbut you were warm, clean, andβ¦ safe.
The infirmary smelled like antiseptic and fresh linen. The steady hum of the ventilation above you was oddly comforting.
You blinked up at the ceiling, trying to steady your breath. Every muscle in your body ached, your back especiallyβan echo of pain radiating from the stitched wound. But compared to what youβd felt before, this was nothing. Just pain. Manageable. Real.
Your fingers twitched under the blanket.
A chair creaked beside you.
βHey,β Chuuyaβs voice was quiet, hoarse from disuse. βYou with me?β
You turned your head and saw him slouched next to your bed, one hand buried in his coat pocket, the other clenching his phone like heβd been waiting for hoursβfor days.
Chuuya stood slowly and leaned over you, brushing a knuckle just barely over your temple, like he wasnβt sure if touching you would hurt.
βYou had us scared shitless, yβknow that?β he muttered, eyes narrowed but wet at the edges.
You tried to speak, but your throat was raw. All that came out was a rasp. Chuuya immediately reached for the water on your bedside table and helped you drink, steadying the glass with a hand that trembled just slightly.
βIβ¦ made it?β you croaked.
βYeah. You did,β Chuuya said, and the tension in his shoulders dropped just a little.
On the far wall, Dazai looked up from a medical report, arms folded across his chest, expression unreadableβbut softer than usual.
βYou look terrible,β he said lightly, coming over. βWhich means youβre going to be fine.β
You tried to sit up and winced. Pain exploded down your spine. Chuuya was at your side in an instant.
βEasy,β he said, gently easing you back down. βYou took a blade to the back, remember?β
βI remember,β you whispered. βI remember everything. I couldnβt move. I was trapped inside my own body. I could hear you both, but I couldnβtβ¦ I couldnβt answer.β
Dazai leaned forward, expression more serious now. βThatβs how the parasite works. Full override. You were lucky to stay conscious at all.β
You swallowed hard, voice cracking. βI tried to fight it. I did. But it felt like it was digging into me. Like it was part of me.β
βYou fought harder than anyone else could have,β Chuuya said quietly. βWe saw it. You slowed it down. You gave us the opening.β
You turned away slightly, tears slipping past your lashes before you could stop them. βIβm sorry. IβI couldβve hurt you. I wanted to. I wasnβt in control but it was likeβ¦ part of me was still trying.β
βDonβt do that,β Chuuya said firmly. βDonβt blame yourself for something someone else did to you. You didnβt fail. You made it home.β
You wiped at your eyes, but Dazaiβs coat was already tossed over you like a blanket, warm and worn. βWeβve all been there. Mind control, possession, psychological tormentβitβs practically a rite of passage in our line of work.β
Chuuya gave him a sharp look. βMaybe donβt say it like that while sheβs literally full of stitches, dumbass.β
But you smiled faintly. βThanks. Both of you.β
Dazai shrugged one shoulder, but he didnβt hide the flicker of relief that crossed his face. βJust donβt make a habit of getting brain-hijacked. Itβs bad for morale.β
Chuuya pulled up the blanket around you a bit more. βYouβre gonna be out for a while. Weβll be here.β
βYou donβt have to stay,β you murmured, though your voice betrayed how much you didnβt want them to leave.
Chuuya scoffed. βNot a damn chance.β
Dazai moved to the empty cot beside yours and flopped down onto it like it was his personal couch. βWake me up if she tries to dramatically code out again.β
βReal comforting, jackass,β Chuuya muttered, but he didnβt move from your bedside.
There was a long, quiet moment.
Then Chuuya leaned forward, resting his arms on the bed rail, close but not touching you unless you reached first.
βYou scared me,β he said, voice almost inaudible. βAnd I donβt scare easy.β
You blinked at him, startled. He wasnβt looking at youβjust watching the blanket rise and fall with your breath.
βIβve seen a lot of shit,β he continued, βbut watching you hurt, knowing you were still in there, trying to get outβ¦β He clenched his jaw. βIf weβd been a minute laterββ
βBut you werenβt,β you said softly.
Chuuya finally looked at you, then down at your hand resting on the blanket.
He covered it gently with his.
βNo,β he said. βWe werenβt.β
A few days had passed.
Your body was healing, slowly. The pain in your back dulled from white-hot to a deep, manageable ache, and the worst of the muscle spasms had stopped. You could sit up now without helpβthough Chuuya still hovered like a bodyguard with a nursing license.
He was surprisingly gentle with the bandage changes.
βTry not to flinch,β he muttered as he peeled the gauze away, careful not to tug too fast. βYouβll just reopen the scab if you jerk around.β
βIβm not flinching,β you said, biting your cheek. βIβm wincing. Very different.β
βTch. Donβt sass your medic.β
βYouβre not a medic.β
βI am now.β
Chuuya dabbed antiseptic over the edge of the stitched wound, brows pinched in focus. He looked exhausted, circles under his eyes and a faint scab healing along his neckβyour doing, probably. He hadnβt once brought it up.
You glanced past him, across the room.
Dazai was sitting in the windowsill, flipping through a thin paperback he hadnβt turned a page of in ten minutes. His long coat was draped over the back of your chair, his scarf still hanging from one sleeve.
βWhy are you still here?β you asked suddenly.
Dazai looked up, surprised. βYou trying to get rid of us already?β
βI justβ¦β You hesitated. βYou donβt usually stay for cleanup.β
Chuuya snorted, not looking up. βBelieve me, I was shocked too.β
Dazai stretched out one leg and tilted his head lazily. βNormally Iβd say something flippantββI was boredβ, or βthe vending machine here has better snacksββbutβ¦β His gaze met yours. Calm. Honest.
βYouβre part of the team,β he said simply. βEven I donβt walk out on that.β
The words settled in your chest like warmth spreading through your ribs. No dramatics, no false cheer. Just truth, the rare kind Dazai only gave when it mattered.
He turned back to his book like it hadnβt meant anything. βBesides, if I left you alone with Chuuya, youβd be bored to death by his micromanaging.β
βYou say βmicromanaging,β I say βdoing it right,ββ Chuuya grumbled, taping a fresh bandage in place. βThere. All done.β
You sat up slowly and let out a shaky breath. βThanks.β
Chuuya looked at you, really lookedβhis eyes scanning your face like he still didnβt quite believe you were okay. Then, softly:
βYou scared the hell outta me, yβknow.β
You opened your mouth, but he shook his head.
βDonβt say sorry again,β he added. βYou already did. Justβ¦β He reached out and adjusted your blanket without meeting your eyes. βDonβt do it again.β
You nodded. Quietly. βIβll try.β
There was a silence. Comfortable, now.
Then Dazai stood, brushing nonexistent lint from his shirt. βSince youβre no longer writhing in agony, I assume itβs safe to bring you real food again.β
Chuuya arched a brow. βYou mean instead of smuggling in all those horrible convenience store snacks?β
βIβll have you know she requested those,β Dazai said airily. βApparently the hospital miso soup was offensive.β
βIt was,β you agreed, grimacing. βIβm still traumatized.β
Dazai smiled faintly and turned toward the door. βIβll be back in ten. Donβt let her escape.β
βSheβs not going anywhere,β Chuuya said, nudging your shoulder. βSheβs got stitches the size of a freight line.β
βStill faster than you,β you mumbled, and Chuuya let out an incredulous laugh.
When Dazai returned, he brought soup, rice, and some weird sugary drink he claimed would βrestore your will to live.β
You sat between them, shoulder brushing Chuuyaβs, knees tucked up under the blanket Dazai had thrown over you earlier. No one spoke much, but you didnβt need to.
The worst had passed.
And even though you still ached, even though the memory of that thing inside you made your skin crawl, you felt grounded. Steady. Because theyβd pulled you back, piece by piece. And they were still hereβnot because they had to be, but because they chose to be.
That was something stronger than any parasite. Stronger than fear.
That was family.
The apartment wasnβt big, but it was warm. Lived-in.
Sunlight filtered through gauzy curtains, casting soft gold across the low coffee table and the rumpled blanket someone had tossed over the back of the couch. You sat cross-legged on the floor, nursing a mug of tea that had gone lukewarm while you zoned out watching the steam fade.
Your body still ached if you moved too fast. The wound along your back pulled when you bent a certain way, and your sleep was fracturedβshadows of the parasiteβs control sometimes chasing you into half-lucid dreams. But it was better. Every day a little more of yourself came back.
The TV played something low and mindless. A nature documentary. Chuuya was sprawled sideways on the couch behind you, one arm hanging off the edge, absentmindedly twirling a pen between his fingers.
βYouβre staring again,β you said, not turning around.
βIβm not,β he lied smoothly.
βYou are. I can feel it.β
βIβm just making sure youβre not about to keel over and smash your head on the table.β
You smirked faintly into your mug. βThat would be impressive considering Iβve been sitting perfectly still for the last hour.β
βThatβs exactly when people do dumb shit.β
You looked back at him over your shoulder. βYou can stop hovering, yβknow. Iβm not gonna drop dead on your carpet.β
Chuuya gave you a look. βThatβs exactly what someone whoβs about to drop dead would say.β
You laughed, dry but real. The sound seemed to settle something in himβhe shifted down onto the floor beside you, close but not crowding, and took a sip from his own mug. Coffee, probably. Chuuya didnβt do herbal.
βWhereβs Dazai?β you asked.
βOut,β Chuuya said, rolling his eyes. βHe left a note that said βDonβt wait upβ and drew a little octopus with sunglasses.β
You snorted. βWas heβ¦ okay? Lately?β
βHeβs Dazai,β Chuuya said with a sigh. βWhich means yes, and also no, and also probably setting something on fire just to see how long it burns.β
But his tone wasnβt bitterβmore resigned. Familiar. Like he knew Dazaiβs rhythms better than anyone and didnβt expect them to change, only to cycle.
βI think it shook him,β you said quietly. βWhat happened. With me.β
Chuuya was quiet for a beat.
βYeah,β he said. βIt did.β
You looked down into your tea. βHe hides it better than you.β
βI donβt hide anything,β Chuuya said. βI just swear a lot instead.β
The front door clicked open a moment later.
Speak of the devil.
Dazai stepped in, coat slung over one arm, scarf missing. He looked slightly windblown, one hand holding a plastic bag that he dramatically wiggled in the air.
βI come bearing gifts,β he said. βAnd by gifts, I mean sugar.β
He set the bag on the table, revealing a lopsided assortment of mochi, cream puffs, and some neon-pink drink that probably shouldnβt be legally ingestible.
Chuuya made a face. βThatβs not food. Thatβs a health hazard.β
βThatβs joy, Chuuya. You should try it sometime.β
You smiled tiredly and reached for one of the mochi. βThanks.β
Dazai sat on the arm of the couch, eyes flicking over you. βHowβs your pain today?β
βManageable. Still sore. Still tired.β
He nodded. βThatβs human, at least.β
The three of you sat in the soft quiet that came after shared catastropheβno urgent mission, no blood in the air, no need to speak just to fill silence. You leaned sideways until your shoulder pressed against Chuuyaβs, and he shifted just enough to steady you.
Dazai, surprisingly, didnβt make a joke. Just rested his chin in his hand and watched the light play across the hardwood floor.
βI know I said it already,β you murmured, βbutβ¦ thanks. For not giving up on me.β
βPlease,β Dazai said, voice mild. βDo you know how hard it is to find people who donβt scream when I walk into a room?β
Chuuya rolled his eyes. βHe means βyouβre welcome.ββ
You grinned.
Outside, a breeze rustled the balcony plants you hadnβt managed to kill yet.
Inside, you sat between two dangerous, complicated menβone a walking contradiction, the other a knife in a velvet gloveβand for the first time in weeks, the weight in your chest didnβt feel unbearable.
You were healing.
And you werenβt doing it alone.














