disclaimer: dark themes, such as murder and psychopathy.

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"San is so handsome!" You mocked. "What does everyone see in him?"

Yeseul shrugged, but kept her eyes on him. "He is attractive. You've got to admit it."

"No, I don't."

"Y/N," she sighed and looked at you. "What is your problem with him?"

You thought for a moment. "He's just so irritating. I don't know what's so special about him."

"Everyone has something special about them, Y/N."

You looked at San and made eye contact with him, and you held it for a second, then smirked and looked back at Yeseul. Even though you didn't like him, you loved getting under his skin. He hated when you smirked at him, and he hated when you ignored him. Nobody ever ignored him, and you were not going to be an exception.

"Deep down, I think you and San have something in common." Yeseul said.

"Really? What's that?"

"You are both very mysterious."

Later that night, you had just gotten off of work and you were walking home. It was dark, but that was your favorite time of the day. People would prowl, as if they were wild cats looking for their prey. Normally, they thought that you'd be their prey, but it was always the other way around.

You turned a corner and bumped into an older man, probably in his fifties. He stepped back and looked you up and down.

"My apologies, baby." He said.

You smiled flirtatiously. "Don't worry about it."

"What's a pretty lady like you doing all alone?"

"I don't like being alone." You replied, moving your hand up his arm slowly. "Would you like to accompany me?"

He nodded excitedly and wrapped his arm around your waist. As you finished your walk home, his hand would find its way to different areas of your body, and you fought the urge to slap his hand away. You unlocked your front door and let him in first, then you put your hand on his shoulder and leaned in closer to him.

"All the fun stuff is in the basement." You whispered.

He grinned. "Lead the way."

You grabbed his hand and walked him down to the basement. You sat him down in the single chair, allowing him to look at all of the chains and whips you had laid out.

You leaned down, your hands on his thighs. "You like being tied up?"

"Whatever you want, baby."

You hummed, laughing slightly. "Stay put, then."

You grabbed some of the chains off the table and tied his hands to the chair, well enough that there was absolutely no way he would get away. You went back to the table and grabbed a small box from underneath it and opened it.

You pulled out a knife and turned back to him, smiling. "Ready to have some fun?"

You were washing the blood off your knife when the news came on the next morning, and you listened closely.

"We'll come back to the weather in a few minutes." The news anchor said. "Police have found nine bodies in the Imjin River. Five of the victims were brutally beaten, and the other four were stabbed to death. Law enforcement is working fiercely to find the person who has been committing these murders."

You stared at the tv for a second and shook your head. You didn't beat your victims, so somebody else was doing their own dirty work as well. Once all of the blood was off of the knife, you took it back down to the basement and hid it under the table. You deep cleaned the basement floor and disposed of any evidence, then got ready for school.

When you walked into school, Yeseul hooked onto your arm and walked to class with you. "Did you hear about all those people that are dead? I don't think you should walk home alone anymore, Y/N."

You smiled at her. "Don't worry, Yeseul. I'll be okay."

You got to class and sat next to each other, but you looked over at San, who was already looking at you. You smiled and waved, making him smirk in response. He looked away and you looked down at his backpack, and you saw the smallest amount of a red substance on the side of it. You bit at your lip as you wondered where it could have come from, but you had a feeling that it wouldn't be hard to figure out.

"Class," Mrs. Xu started as she walked into the room. "I'm sure every one has heard about all of the people who have been murdered recently, and I just want to say, please be careful. Your life is priceless, so watch out for yourselves."

San's arms were crossed, and he was looking at his desk, as if he didn't care one bit about those people, and that's when you knew exactly what he was up to. So, after school, you followed him to his locker, and when he tried to open it, you shut it. He looked over at you and raised his eyebrows questioningly.

"Yes?"

"The Imjin River is an interesting choice, don't you think?" You asked, and he turned his body to fully face you. "It makes me wonder why there's blood on your backpack."

He nodded slowly, then leaned in and pulled you to his chest. He was hitting a pressure point, and truthfully, you were excited. Nobody was really around, but if anybody ended up asking what happened, he would just say that you passed out and that he was taking you to the hospital. What really set him off was that you weren't fighting back, you were just looking at him, with that pretty smile of yours.

Not much longer and you were out like a light. He rushed out of the school to make it seem believable, and people were giving him odd looks, but they didn't think much of it because he looked worried. Psychopaths were good at lying.

The first thing you saw when you came back to your senses was San, staring at you with a belt in his hand. You licked your dry lips and looked up at the chains your wrists were restrained in. The room was completely contrary to what he was planning to do to you. It was bright, it looked like a room that friends would hang out in during a sleepover. The feeling of the room just made his actions more sinister.

"Do you hang out with your friends in this room?" You smiled. "Even after all of the people you've killed in here?"

He nodded and stood up, bending down in front of you and grabbing your face. "The only way you could've figured out that it was me, is if you were the other killer. I don't stab people, Y/N, I beat them."

"Are you gonna hit me, San?" You asked, a seductive tone in your voice.

"No, I have morals. I couldn't hit you." He smiled. "But I can strangle you."

You giggled. "You don't like the competition, hm? You're mad that I know what you've been doing, and you're even angrier that I'm on your killing grounds."

"You just know too much. How do I know you won't turn me in so that you can have all the spotlight for yourself?" He questioned. "I can't risk it."

"That's understandable, but I know how important this is to you. I wouldn't take that away from you." You replied. "But you can kill me if you want, just make it enjoyable for both of us."

He shook his head and stood up, turning his back to you. "You'd enjoy it too much. I'm not going to kill you. I think that maybe you're worse than I am."

"No, we're the same, San. I just want to know why you kill. I'll tell you why I kill."

"Those men that I killed were disgusting. They would hit on young girls, younger than us, Y/N. Minors. Somebody had to take care of it."

You nodded in agreement. "I killed men who would hit on me on my way home. They were so disrespectful, so I'd take them home and make them think they would get lucky. I put them in their place."

"In the Imjin River." San stated.

"Exactly." You whispered. "Take these chains off of me."

He crossed his arms. "No, you'll probably take the chance to kill me."

"I already told you that I didn't want to take anything from you. You excite me actually, there's finally someone who knows and understands."

He contemplated it for a second, then he undid the chains and let you fall to the ground. You got up, but he grabbed your throat and got in your face.

"If you turn on me, I can't make any promises, Y/N. Understood?" He growled.

"We're partners now?" You laughed. "How fun!"

His grip tightened. "I'm serious."

"Okay, okay. I got it, San."

He let go of your throat and sat back down in his chair, so you got in front of him, making him look up at you. You sat on his lap and kissed his jawline.

"Now I see what all the other girls see." You whispered, making your way to his neck. "Just for different reasons."

His hand landed on your waist, and he pulled you closer to his own body. "Now I know why there was just something about you that I couldn't resist."

You grinned and pulled back, pressing your lips to his for a second. "This is going to be fun, San."

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a/n: in no way is this to idolize killers or stereotype anybody! it was just an imagine idea. i know it was a bit different compared to my other imagines, a little bit darker, but that's the point- to be different.