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giannan04 · 5 months ago

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Hiii, can you please write a Yandere San X reader fanfic? Maybe where he’s her therapist and he gets her to break up with her bf because he’s been obsessed with her? 🙏🏽make it dark pleaseee? Tyy in advance

Thanks for the request!💕🫶🏻I hope you like it, I tried to fit everything in the best I could 🥹🫶🏻I hope it’s dark enough for you 👀

Pairing: Therapist Yandere! Choi San x afab! Reader, Mention of Jung Wooyoung X afab! Reader

Genre: Yandere; thriller

Warnings: Manipulation, mentions of a toxic relationship, slight smut, character death, very slight gore.

MINORS DO NOT INTERACT! 🔞

Dr. San Choi's reputation preceded him. He was the therapist everyone seemed to swear by. Patients praised his ability to get results where others failed, and he was known for treating some of the most complex mental health cases in the city. When your relationship with Wooyoung started having problems, your best friend Mingi suggested therapy. You were hesitant at first, but when he specifically recommended Dr. Choi, someone who had worked wonders for him, you decided to give it a try.

“Trust me, San’s the real deal,” Mingi said, leaning in with that serious look he gets when he really means something. “He helped me when I was going through one of the darkest periods in my life. If anyone’s gonna help you figure out what’s going on, it’s him.”

That’s how you found yourself meeting with San in his warmly lit office multiple times a week. From the start, Dr.Choi had a way of making you feel truly heard, like every word you said mattered. He never rushed through sessions and even went as far as canceling other appointments just so you could have more time when you needed it. He never told you that you were wrong, no matter how messy or complicated your relationship issues sounded. Instead, he listened with that same calm, reassuring expression that made you feel understood and validated. Over time, he even gave you his home address, offering to meet there if you ever needed to talk outside of office hours. You didn’t think much of it—you just figured he was incredibly dedicated to his work and to helping you through this tough time.

Over the weeks, San subtly guided you into believing that your relationship was toxic, that Wooyoung was holding you back. He never said it outright; instead, he asked questions that made you second-guess everything. "Do you feel like you're truly happy?" he'd ask, his voice gentle but insistent. "Sometimes, we stay in situations because we're afraid of being alone, not because they're right for us." Little by little, you found yourself reexamining your relationship with Wooyoung.

San’s advice seemed to play on repeat whenever you fought with Wooyoung. The tension between you two had been getting worse for months, with minor disagreements escalating into major arguments. Every time you argued with Wooyoung, you couldn’t shake the feeling that San’s words were right there with you. Even though part of you still hoped things could improve, the truth was hard to ignore: deep down, you knew San was right, there was no saving your relationship. It felt like there was no way to fix what had become broken, despite your hopes that things could somehow get better.

One night, after another argument left you in tears, you found yourself at San's apartment instead of your own. You needed someone to talk to, and San was the first person you could think of. You had caught Wooyoung with another girl, and you didn’t want to be alone. You needed to let everything out. Your heart was broken, and you know the only person you could talk to was San. You hadn't planned on it, but he'd always offered you to come to his place,and before you knew it, there you were, standing outside his front door.

When San opened the door, pleasantly surprised to see you. His brows furrowed as he glanced at his watch. “Y/N? What happened? It’s almost midnight,” he asked, concern replacing the confusion in his eyes as he noticed that you were sobbing. Tears covered your face, and you were so hurt and anxious that you were shaking. San’s heart broke seeing you like that. Without hesitation, his expression softened, and he gently took your trembling hand. “Come in,” he said, his voice soothing as he pulled you into the safety of his home.

You sat on his couch, trying to hold back more tears as you told him everything—how you found Wooyoung with another girl, how you felt like your relationship was falling apart. San listened intently, never taking his eyes off you, nodding with genuine empathy. When you finished, San leaned in closer, brushing a tear off your cheek with his thumb. “You deserve so much better than this, Y/N,” he whispered, his voice low and comforting. “You deserve someone who would never even think of hurting you like that. Someone who truly values you.”

You felt a blush rise to your cheeks at his words and the way his hand lingered on your face, the soft caress sending a warmth through you that you hadn’t felt in a long time. His touch was tender yet firm, making you feel safe; cared for. You haven’t felt that way in a while. You caught your breath as he leaned in just a bit closer, his other hand gently resting on your thigh, as if waiting for your permission. “I can show you what it feels like to be treated right,” he murmured, his gaze darkening with desire. Despite the hesitation you felt at the back of your mind, you couldn’t deny the lust and attraction you felt in that moment. You leaned into his touch, your body responding before your thoughts could catch up.

His lips were dangerously close now, and there was no more space between you. All the tension, all the confusion, all the heartbreak you were feeling—everything faded away as his hands slid further up your skirt, placing his hands on your ass, pulling you into him with a gentle firmness that felt intoxicating. “Let me take care of you, Y/N,” San whispered, his words making your body tingle and heart flutter. And before you could even think to resist, you found yourself nodding, your body betraying you. In your head, you knew this was wrong, but your body felt so right. And you needed, no, deserved to be loved and cared for. It was about damn time.

“I want you, San… I need you. Please, take care of me,” you told him softly, never looking away from his brown almond-shaped eyes. That was all San needed to hear-the very words he had been waiting for since the moment you stepped into his office. San smirked, as he began undressing you with a deliberate slowness, savoring every second. He took in each sight of your beautiful body, pleased that it belonged to him.Before you knew it, he was fucking you right there in his living room, each touch, each kiss, each thrust leaving you wanting more. For the first time in months, Wooyoung and your relationship problems vanished from your mind, replaced by the warm sensation of San's hands on your body, the way he whispered your name like a prayer. The way his dick filled you up, the way he kissed your body was he made love to you.

The only things you were thinking about was how you never wanted San to stop making love to you. And San knew, finally… you belonged to him. San's hands rested possessively on your waist as he thrusted deeper and deeper inside you, your ass slapping against his thighs. You moaned uncontrollably, never wanting him to stop. You wanted to show him he had complete control over you. San’s eyes never left the sight of you, he loved seeing what a slut you could be for him, and how only he could make you feel this way. Smirking, he bent down close to your ear, whispered sweetly to you. "See? You feel it, don't you? How good we are together. You don't need him, Y/N. I'm the one who understands you, who can give you everything you’ve ever wanted, and more. Only I can make you feel this way. You belong to me, and I’m never letting you go."

The next morning, sunlight peeked through the curtains, but the warmth in the living room felt oddly suffocating. You noticed a heavy blanket was draped over your naked body. You must have fallen asleep after what happened last night, so San must’ve brought a blanket out for you. You glanced over and San was still lying beside you, sleeping peacefully. His arm was wrapped tightly around your waist. Yawning, you reached for your phone which was on the floor next to you. You unlocked your phone, and your heart nearly skipped a beat when you saw a text from Wooyoung: I know I fucked up. But I love you. And I want us to work on things. I don’t want to lose you. Let me know when you’re ready to talk.

Your heart fluttered with a sense of hope, but before you could respond to the text, you felt San's eyes boring into you. You looked up at him, not realizing how closely he was watching your every move. You didn’t even hear him wake up. His expression remained calm, but the slight clenching of his jaw told you everything. He was furious. He must’ve seen you open the message on your phone when he woke up.

"Oh. Wooyoung texted me. He wants to fix things," you said, a little too eagerly, not noticing the anger settling into San's expression.

San's smile didn't quite reach his eyes as he leaned in to kiss your forehead.

"That's... nice," he murmured, though his voice didn’t reflect that. He actually sounded pissed, but you could tell he wasn’t trying to show it. San stood up, wrapping the blanket around him as he walked towards his bedroom. “I have to get dressed. You can stay here as long as you need, Y/N. I actually have to head out for another appointment, but make yourself at home, alright?"

You nodded. “Okay, thank you,” you said sweetly, ignoring the tension.

San drove in silence, his knuckles white as he gripped the steering wheel. He replayed your excitement over Wooyoung's text in his mind, a bitter taste settling on his tongue. How could you be so blind? After everything he had done to get you away from Wooyoung, after showing you what real love felt like, you still had the nerve to be excited about that cheating scumbag reaching out! Pissed off didn’t even begin to describe how San felt. He was so angry his eyes twitched and his hands shook as he drove. He had to do something, he was about to have you all to himself until that mother fucker sent you that text.

His thoughts darkened further as he arrived at the home you shared with Wooyoung. His plan formed in his mind, making him feel only a little better. He knocked on the door, his face wearing the mask of a friendly, concerned therapist. Really, he was the furious therapist who wanted to fuck somebody up.

Wooyoung opened the door, blinking in surprise. "San? Aren't you YIN's therapist?"

San let out a cheerful laugh. "Yeah, I am! My office is getting renovated, so I thought I'd stop by and see how things are going. I know Y/ N's been having a tough time, and I wanted to touch base."

Wooyoung relaxed slightly, shrugging. "She's not here right now, but come in. We can talk about how she's been doing. Ive been wanting to talk to you, anyway. Maybe you can give me some insight."

San stepped inside, carefully observing every detail of the house, the place where you once tried to build a future with someone who never deserved you. They moved throughout the home and as Wooyoung started talking, San could feel his blood boiling but he knew he had to remain calm. Wooyoung would get what he deserved shortly.

Wooyoung led San into the kitchen and pulled out a bottle of bourbon. “Want some?” he asked, holding the bottle up. “No, thank you. I’m just here under professional circumstances” San smiled, watching as Wooyoung shrugged and opened the bottle. “Suit yourself,” he said, taking a sip. San and Wooyoung sat at the table, ready to discuss sessions. Which was what San wanted Wooyoung to think, anyway.

"Ever since she started therapy, it's like she's blowing everything out of proportion.

She's been acting like our problems are way bigger than they actually are, like she's ooking for an excuse to leave. I don't know, man... it feels like she's being pushed into seeing the worst in me." Wooyoung stared long and hard at San.

San's eyes darkened, his smile slipping for just a moment as he watched Wooyoung ramble on. How dare he accuse him of manipulating you? Wooyoung was the one who had been lying to you, hurting you, cheating on you, and who knows what else. Hell, this dick was the whole reason you needed therapy in the first place! And yet here he was, acting like the victim.

"You really think so?" San's voice was low, dangerous. He took a step closer to Wooyoung, who didn't seem to notice the shift in San's tone.

"Yeah, it's like she's-" Wooyoung was cut off by the sudden pressure of San's hand around his neck. Panic flashed in Wooyoung's eyes as he struggled against San’s grip.

“San, what…what the hell are you doing?" Wooyoung croaked, trying to break himself free. He managed to break out of the hold, shoving San back with surprising strength, but San's fury was beyond reason now. The therapist quickly regained control, his movements turning brutal as he rained down punches, each one fueled by the sickening memories of everything Wooyoung had done to hurt you.

"This is for Y/N," San hissed between clenched teeth, his eyes wild as he struck Wooyoung with relentless force. San began to stop on Wooyoung, not caring that his blood was getting thrown into the air.

"For every tear she shed because of you."

Wooyoung's resistance weakened as blood dripped from his split lips and broken nose. San's breaths were ragged as he lifted Wooyoung's head by his hair, glaring into his fading eyes. “Pl-please, man…don’t do this. I love Y/n. I never hurt her that much. Believe me”, Wooyoung tears mixed with the blood covering his face satisfied San beyond reason. “Sorry, but with you gone, Y/n will be happier. If you really loved her, you wouldn’t mind dying.” With a final surge of strength, San twisted his hand, the sickening crack of Wooyoung's neck snapping echoing in the room as he tore his head clean off.

The lifeless expression on Wooyoung's face was frozen in terror as San calmly wiped his hands on a towel he found in the kitchen. The sight of Wooyoung's head dangling by his fingers didn't faze him-in fact, he was feeling a sense of satisfaction

San returned to his apartment, already mentally preparing to tell you to ignore Wooyoung’s text, that he didn’t deserve you. But when he entered his home, he found you pacing the living room, your phone clutched tightly in your hand.

"San, I've been thinking... maybe I should give Wooyoung another chance," you blurted out. You didn't notice how San's entire demeanor shifted, his smile growing unnervingly cold.

"Why would you even consider that, Y/N?" San's voice was sharper than you expected, laced with barely-contained fury. You thought your therapist would’ve been happy for you, that you were ready to work things out. “After everything he's put you through, why would you care? Especially after what we did last night."

His words cut through you like ice. You hadn't anticipated such a strong reaction from him. Your face turned bright red and you avoided his gaze. "I... I don't know. I guess I was just confused. I just wanted to feel loved but I’m in love with Wooyoung, and it’s hard to let go of someone you cared about for so long."

San's eyes narrowed, his patience thinning. "You shouldn't have even cared when he texted you. Do you think that was fair to me? Letting me be the one to comfort you, only to get excited over him? And then you let me fuck you-" His words dripped with venom as his eyes blazed with barely-restrained anger. “You’re a worthless whore. Disgusting… I don’t know how I’m even looking at you right now. I shouldn’t have felt bad for you all of those times you came to my office, crying about him. You deserve to be treated like shit!”, his words dripped with venom, his face turning red as he screamed in your face. Your ears throbbed and you broke down in tears. San was scaring you, and the things he was saying to you hurt.

You took a step back, sobs shaking your body. San... I didn't mean for things to get so complicated… please stop yelling at me, you’re scaring me!,” you put your hands in front of your face, just in case he was going to starting hitting you.

San's expression hardened, and without another word, he grabbed your hand, pulling you toward the living room. "I think it's time I show you something, Y/n.

You nodded, unsure of what he had to show you. For some reason, there was a feeling in your stomach, a gut feeling. Something was off. The unease grew as he led you to a trash bag that was sitting in front of the front door. “What’s that?,” you asked, confused. Why on earth was he showing you a trash bag? Did he want you to take the garbage out?

San laughed, but it wasn’t humorous. With a single swift motion, San tore the trash bag open, revealing the gruesome sight inside.

Wooyoung's severed head stared back at you, lifeless eyes wide open in horror. His olive skin had turn a sickly gray color, and a stench burned your nose. Your breath caught in your throat as you stumbled back, terror freezing you in place. You screamed, your hands covering your eyes as you dropped to the floor. “Why… why would you do this?”, you covered your face, as you choked on snot and tears. Your body shook and between the crying, the smell of rotting flesh, and the sight of the love of your life’s body-less head was all too much. You stared up at San. Someone you trusted with your problems, someone you felt safe with, was a monster. San looked at you, a twisted grin on his face.

"Now, Y/N, tell me... are you still confused about who really cares about you?"

I’m still taking requests everyone, I’ll write anything🫶🏻❤️

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