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[m1sa-amanee]

Muzan x f!demon!reader

Warnings: Rough sex, Huge cock, Demon/Upper moon reader, Insults, Reader in love

(Tell me if I forgot something)

NSFW

When you finally found out something very useful about the blue spider lily, you immediately went to your lord to deliver the information.

As you came across a cozy house where Muzan was experimenting to find out the blue spider lily formula, you sat down on the edge of the window, bowing down.

"I have things to do, what do you want?" He asked with his usual cold tone, not even bothering that you came.

"Sorry to bother you my lord, but I have some information about the blue spider lily." You gulped, not even looking at his direction as you waited for him to answer.

His gaze wandered to you, his red glowing eyes looked at you. Ready to demolish you. "Don't tell me this is some useless information that I get every time." He said looking you up and down.

"N-no my lord..." You answered quietly, your voice filled with fear as you sighed. "What are you waiting for? Go on." Muzan looked at you seriously, he showed no emotion.

"Turns out that the blue spider lily only grows at daylight. And there's ONLY ONE specific place where it grows." When that information escaped your mouth, his eyes widened and his emotionless face spread out into a smirk.

"Finally something useful. I need to give you a reward for that." His smirk widened, taking you by your chin so you would look up at him. "You think I don't know? You think I don't know how you're always nervous around me? Did you forget that I can hear your thoughts?" He looked at you coldly again as his grip on your chin tightened. "I-I'm sorry my lord. I didn't-" Your voice filled with fear, you couldn't even finish explaining yourself when he spoke in a loud tone.

"Quiet." You thought you would die, just because you fell in love with the demon king himself. "Now. Come down from that window frame." Muzan demanded with a cold tone and released his grip.

When you got down from the window, Muzan demanded something from you again. "Now sit." He said in a demanding tone while pointing at the bed next to him.

You didn't understand anything, but the word of your lord was EVERYTHING. So you did as he asked. "Good." After those words came out of his mouth, he came closer to you and looked down at your flushed cheeks while his hands were gracefully behind his back.

You weren't able to react as he took you by your neck and squeezed it tightly, kissing you aggressively. You liked the kiss so you kissed back, but his other hand glided to your hair and he pulled out of the kiss.

"So you want more? I see... but don't forget that I'm still your lord, pathetic creature." Muzan said hissing through his teeth. You felt useless around his strong grip.

Suddenly your clothes got ripped apart, where you weren't even able to react. Your eyes widened, trying to cover yourself with your hands.

He took your hands in an aggressive manner and pinned you down. "I want to see your body. Don't you fucking dare to do that again." You could just gulp at his words.

Muzan then kissed you again, even more aggressive than before, not letting you take a breath. It's not like you need air anyways.

He continued kissing you, but when he released the kiss, a string of saliva was connecting you both.

Muzan kept pinning you down with one hand, the other gliding down his body to unbutton his blouse.

Lucky you, Muzan never gifted anyone a reward like THIS ONE. Yes, he could just give you his blood, but this was MUCH better. Wasn't it?

After he finished unbuttoning his blouse, you could see his muscles flex. "How pathetic. You can't even look at your lord without going crazy." He mocked your weakness towards him.

"I-" You wanted to answer as he cut you off. "No talking. Did I allow you to talk? Remember... this is only a reward for the information you gave me." He looked at you coldly again, his red eyes narrowing over you.

His strong but also somehow SWEET words made you keep your mouth shut, as you continued watching him. He kept looking at you when he started unbuttoning his pants, revealing his huge cock.

It was thick with veins and a pink tip. <I'm sure he can change the size of it.> you thought to yourself, Muzan's smirk widening at it. "You aren't wrong, I can." You heard his words with a ring in your ears, your eyes widened and you blushed from embarrassment.

"I can hear your thoughts. Did you forget about it again? Of course you did. You're a stupid and weak creation." He scoffed annoyingly as he grabbed his cock and without any warning entered into your already wet hole. You couldn't react any other way except to gasp from his size.

Mercy wasn't a word for Muzan, so normally he wouldn't let you get used to his size. BUT only because this sexual session was a reward, he let you.

When you got used to his size, he started moving. And the movement he did, wasn't soft or gentle, it was literal HELL. Your sloppy cunt was tight, so his eyebrows furrowed.

"You little bitch. Getting fucked into your tight pussy by the demon king himself. I'll stretch your pussy out, so there wouldn't be a problem to fuck you." Muzan whispered in a serious but also mocking tone as he started moving faster and faster.

Your eyes widened from the pain, Muzan squeezing your wet gummy walls even more. He stretched your pretty cunt out so wide, that now three of his cocks could fit in.

Muzan smirked at the sight of you, when he suddenly stopped pinning you down and gripped your hips, his nails digging into your skin.

You put your hands on your mouth so you wouldn't let out those WEIRD sounds in front of your lord.

"I want to fucking hear you!" Muzan shouted angrily. You listened to him and released your hands. Your hands automatically wandered to his neck, so you could keep balance.

Your moans and whines continued to come out of your mouth, Muzan only laughed mockingly. "How pathetic." He said with a big smirk on his face.

You felt Muzan suddenly cumming right into your stretched out and wet cunt. He then pulled out looking at the mess, while his cum was dripping out.

"Beautiful sight." He kept smirking after his words. You still kept your arms around his neck, your eyes looking tiredly at him.

"Why did I even make you to upper moon four if you're weak." Muzan mocked again as he completely pulled away from you. He buttoned his pants back up and put his blouse on, starring down at you.

You kept quiet, remembering his words to keep quiet. You straightened yourself, sitting up and still keeping yourself on the bed.

"If you find out where the exact place is, I may give you another reward." You nodded in response, your knees shaking from the weakness and pain.

He raised a brow, the cold expression still remaining on his face. "Use your words." He demanded as you spoke up. "Yes..." You answered weakly, not even daring to look at him.

"You are now my fuck toy. So this won't be the last time you get fucked by the demon king." He smirked, leaving the room AND you completely ruined by HIM.