pairings: yan!nagumo yoichi x f!reader x yan!kei uzuki
warnings: non con, unprotected sex, angst, cheating, dark romance, toxic, obsession, possessive, manipulation, forced intimacy, fingering, ooc, uzuki would never do this btw
disclaimer: this story contains dark themes, unhealthy relationship dynamics and criminal behavior. reader discretion is advised. please separate fiction from reality.
nagumo's life as a top-tier jcc hitman was steeped in blood and constant danger. it was a lonely life especially after a falling out with his old friend, kei uzuki. after a major conflict in their past, uzuki had completely disappeared without a trace, leaving a void in nagumo's life.
one evening, just after finishing an exhausting and high-risk mission, nagumo stopped by a cozy, warmly lit bakery nearby. inside, the soothing scent of fresh vanilla, toasted bread and warm sugar filled his nose, instantly wiping away the smell of iron and gunpowder. and then, he saw you.
you are standing by the glass display, fully focused on picking pastries and a small piece of cake. the soft golden light from the shop highlights your gentle features and pure, peaceful aura, instantly captivating him. you look so gentle, so untouched by the violence he has gone through. for a hitman who lives in darkness, you seem like warmth itself.
since that day, visiting the bakery became part of nagumo’s daily routine. he kept coming back because he knew you would be there. eventually, he gathered the courage to talk to you. his playful and charming side shone through as he teased and gave smooth compliments that made you blush and smile. over time, you two grew very close, fell deeply in love and officially started a relationship.
after several years together, nagumo finally proposed to you. you were well aware of his dangerous line of work as a hitman, instead of running away, you fully embraced his dark world without judgment. your unwavering support and understanding caused nagumo to fall deeply in love with you. while he navigated the criminal underworld, you maintained a stable career as an ordinary lawyer.
what you don't know is that another lawyer who looks ordinary at your workplace is actually kei uzuki.
uzuki knows exactly who you are. he found out about your connection with nagumo, and when he learned that you are now the wife of his enemy, his blood boiled. he hates Nagumo but seeing how happy and safe you are with him only fuels a dark and twisted obsession in uzuki's mind. the fact that you belong to nagumo doesn't stop him at all. in fact, it makes him even more eager to take you away, to break nagumo and make you completely his.
one afternoon, after a long meeting ended, the other board members filed out of the room. uzuki raised his hand slightly, his voice calm but heavy. “y/n, please stay behind for a moment. we need to go over the quarterly report.”
you nodded politely, completely unsuspecting and remained in your seat.
once the heavy doors shut and the room was entirely empty, uzuki closed his folder and looked at you with an unnervingly soft, pitying expression. “you've been looking distracted lately, y/n. is everything alright at home? with nagumo?”
your eyes widened in sheer shock. your breath hitched instantly. “mr. uzuki ... how do you know my husband's name?” nagumo had always been extremely secretive about his past and his old acquaintances. he had never mentioned uzuki to you even once.
uzuki let out a low calculated sigh leaning back in his chair. “we have a history, y/n. a long one. nagumo isn't the loyal husband you think he is. he’s been seeing another woman behind your back.”
“what? no, that's impossible. he loves me” you stammered, your hands trembling against the polished wooden table.
uzuki didn't say a word. he just slid a tablet across the sleek table, displaying several photos and forged chat logs showing nagumo entering luxury hotels with an unknown woman.
“he’s been using his 'missions' as a cover story, y/n. he’s out with her right now while you're here working yourself to the bone.”
your heart completely shattered. your mind began to race, desperately connecting the dots in a panic. is that why he always comes home so late? is that why he always smells like foreign perfume and looks so exhausted? a wave of suffocating doubt washed over you. tears pricked your eyes, but you forced them back, your chest tight. “i- i need to go home. i need to talk to him and clear this up right now” you whispered, pushing your chair back to stand up.
“i’m afraid i can't let you do that, y/n” uzuki said, his voice dropping into a dark demanding tone.
before you could even stand up fully, uzuki moved with terrifying speed. his hand shot out, wrapping tightly around your wrist. with a sudden, firm yank, he pulled you backward. you lost your balance with a sharp gasp, falling right into his lap.
uzuki’s strong arms instantly locked around your waist, pinning your lower body against his lap. his grip tightening like iron handcuffs as you tried to squirm and push away from him.
“let me go, mr. uzuki! please! i need go home!” you cried out, your heart hammering wildly against your ribs.
“shh, look at how much you're trembling because of him” uzuki whispered darkly right against your ear, his breath hot and dangerous against your skin. his hand moved up from your waist, his fingers slowly tracing up your spine, sending a cold shiver through your entire body. “why run back to a liar who betrays you? he doesn't deserve you, y/n. stay here with me. forget about him. let me show you what real loyalty feels like.”
you tried to push his broad chest away but he only held you tighter against him, his dark eyes staring down at your lips with a predatory, breathless hunger as his free hand began to slide slowly up the hem of your skirt.
uzuki kept his fingers buried deep inside your soaked pussy, pumping them with steady, relentless force while his thumb circled your swollen clit without pause. your hips twitched against the desk as he worked you open, the wet sounds of his hand filling the quiet office. “you feel that?” he murmured low against her ear, his breath hot on her skin. “he never touched you like this, did he? he left you wanting every time.”
your fingers gripped the edge of the polished wood, your breath coming faster as his fingers curled just right inside her. “stop- this isn't right” you managed, voice shaky but you body betrayed you with a fresh rush of wetness around his hand.
“wrong?” uzuki chuckled darkly adding a third finger and stretching her wider. “your cunt is dripping for me. tell me again how wrong it feels while you're clenching around my fingers.” he thrust them harder, scissoring them to rub against your sensitive spots. “nagumo's out there fucking some other woman right now. you deserve better. you deserve someone who stays and claims what's his.”
her legs trembled as the pressure built fast. “i- i can't” you gasped, trying to shift away but he pinned your hips down with his free hand. “yes you can, angel” he growled, speeding up his movements. “cum for me. show me how much your body wants this instead of him.” his thumb pressed firmer on your clit, rubbing tight circles until your walls fluttered and clamped down hard. you cried out, your orgasm hitting in waves as your pussy pulsed around his fingers, juices coating his palm and dripping down your thighs.
uzuki didn't give you a moment to breathe. he pulled his fingers free, wiped them across your ass and shoved his thick cock into you in one rough thrust. your moan broke into a whimper as he filled you completely, stretching you open without mercy. he started fucking you hard against the desk, hips slamming forward with brutal force that made the furniture creak. “fuck, you're tight” he snarled, gripping your waist with both hands. “he could never reach this deep. only i can make your pussy take every inch like this.”
“kei-” you panted between thrusts, your body jolting with each savage slam. “he- he wouldn't do this.”
“he already did worse by lying to you” uzuki shot back, leaning over your back to speak right against your ear. his pace never slowed, cock pounding into your dripping cunt with wet slaps echoing through the room. “i have proof. photos. messages. he's been using his missions as an excuse to fuck around. you really think he deserves your loyalty?" he reached around to rub your clit again, forcing more pleasure through your shaking frame. “i can give you everything. safety. a man who won't leave you empty at night.”
you tried to answer but another hard thrust knocked the words out of you, turning them into a broken moan. uzuki grabbed your hair, pulling your head back just enough to meet your eyes. “say it. say you want me to keep going.”
“i … don’t know” you whimpered but your hips pushed back against him anyway. he laughed low and fucked you harder, the desk scraping across the floor from the force.
“liar” he hissed, releasing your hair to slap your ass sharply. “your body knows. it knows nagumo can't satisfy you the way i can. look at how you're dripping down my cock.” he drove in deeper, angling his hips to hit your sweet spot with every thrust. “if he ever walks away, you come straight here. my door stays open for you. my bed. whatever you need, i'll give it.”
your moans grew louder as he fucked you without slowing, his cock stretching and claiming you with vicious intensity. “kei ... it's too much” you gasped but he only growled and sped up, skin slapping loudly against you.
“no such thing as too much when it's me” he said, voice rough with effort. “cum again. let me feel that pussy squeeze me while i remind you who really owns it now.” his fingers found your clit once more, rubbing fast and firm until your second orgasm crashed over you. your walls clenched tight around his thick length, milking him as you cried out and shook under him.
uzuki groaned but kept thrusting through it, fucking you relentlessly until his own release built. he pulled out at the last second, stroking his cock and shooting thick ropes of cum across your ass and lower back. he leaned down again, lips brushing her ear as he caught his breath. “remember what i said. if nagumo leaves ... you know where to find me.”
the walk back to the apartment was a blur of cold sweat, trembling knees, and suffocating silence. by the time you unlocked the front door, you couldn't hold it together anymore. you collapsed into the hallway, tears streaming down your pale face, your clothes slightly disheveled and your breath coming in short ragged gasps.
coincidentally, nagumo had come home early that night. hearing the door, he came jogging out of the kitchen with a bright, easy smile but the moment his eyes landed on your shattered figure, his expression completely dropped. his heart sank.
“honey? hey, hey, what happened?” nagumo dropped to his knees immediately, his hands reaching out to cradle your face, his dark eyes filled with instant, frantic worry. “who did this to you? look at me, please-”
the sharp sound of your palm striking his cheek echoed through the quiet apartment. nagumo’s head snapped to the side. he froze, his eyes wide and unblinking as he remained completely still, his mind desperately trying to process what had just happened. he had never seen you like this. you had never lifted a hand against him.
“you liar!” you screamed, your voice cracking as the heavy, agonizing tears poured down your cheeks. you shivered violently, clutching your own arms as you stared at him with a mix of betrayal and heartbreak. “you've been cheating on me! you're always ‘on a mission’ late at night but you're actually out at luxury hotels with another woman! you've been seeing someone else behind my back this whole time!”
nagumo stared at you, his face a mask of pure, unadulterated shock. “what ...? other woman? hotel? honey, what are you talking about? who on earth told you that?”
“uzuki!” you sobbed out, the name tearing from your throat. “kei uzuki! he showed me the pictures! he showed me everything!”
the moment that name left your lips, the air in the room turned ice cold. nagumo’s entire demeanor shifted. the playful, gentle husband vanished, replaced by the terrifying aura of a deadly jcc assassin. his eyes darkened into a dangerous, pitch black void. uzuki. his old friend turned mortal enemy had touched his civilian world.
but as nagumo looked closer at you, his eyes caught something else a dark, unmistakable mark bruised onto the delicate skin of your neck. a heavy, suffocating weight dropped into his stomach. his breath hitched. no. please tell me she didn't ... she wouldn't cheat on me, right? a fleeting, painful thought crossed his mind, tearing at his heart.
seeing the sudden doubt and hurt in his eyes, you broke down completely, dropping your head into your hands as you confessed everything. through broken, breathless sobs, you told him how uzuki had trapped you, how he had manipulated you with those fake photos and how he had used that heavy doubt to force himself onto you against your will.
nagumo listened in absolute, terrifying silence. but before you could spiral further into guilt, he gently but firmly grabbed your hands, pulling you against his chest.
“look at me” nagumo commanded softly, his voice trembling with an emotion he rarely showed. “i have never, ever looked at other woman since the day i met you in that bakery. those photos are fake, honey. uzuki edited them. he hates me and he used my secrecy against us. when i'm out late, it's always jaa business. i have never betrayed you. not once. i love you more than my own life.”
hearing the tremendous and unconditional loyalty from him, a wave of intense self hatred engulfs you. you feel disgusted with yourself. you have a husband who is extremely faithful, protective and loving but you have just been tainted by his worst enemy under the office roof. guilt and the memory of uzuki’s touch make you feel physical pain. you cry harder, pressing your face against nagumo’s chest, whispering how sorry you are how dirty you feel.
nagumo doesn’t blame you. not at all. instead, his grip around you tightens, his knuckles turning white as the fierce and silent anger takes over his entire being. uzuki not only crossed the line. he has destroyed the only sacred thing nagumo has left in this world.
he spent the next hour hugging you, clearing his enemy's touch from your skin and carrying you to the bed. he waited until your crying eased and you finally fell asleep in exhaustion and trauma.
once your breathing steadied, nagumo slowly got up from the edge of the mattress.
he walked to the wardrobe in the dark, his face showing nothing at all, his eyes dead and cold. he reached inside, pulled out a large swiss army knife, inspecting its blades with slow careful movements. he put on his coat, stepped out onto the balcony as the rain started pouring down on the city streets below.
𝘥𝘪𝘷𝘪𝘥𝘦𝘳𝘴 𝘣𝘺 @ / 𝘭𝘶𝘯𝘢𝘧𝘭𝘰𝘳𝘦𝘭
