Demonslayer x Female Reader Oneshots

Muzan x Reader

Thanks @karenahhhhh for the request!
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Soft chuckling filled the air as Muzan ran his fingers through my hair lovingly, his other hand trailing down my waist teasingly.  My head rested in his lap, eyes glued to his deep crimson ones that held so much affection that I was sure he wasn't faking it.  After all this time, it wasn't until this moment that I realized how much he meant to me. 
    
"What's on your mind darling?  You seem deep in thought," Muzan questioned, his face lowering so he could look closer at me.  I took the opportunity to wrap my arms around his shoulders, pulling him a bit closer as he happily complied.  He seemed to be more affectionate lately and it was clearly showing. 
    
"You've been getting soft.  I wonder what the other demons will think when they find out the way you've been treating me," I smirked teasingly.  He didn't so much as flinch at my words, only tilting his head to peer at me intensely with his own lips curving wickedly.  It was easy to forget he was a vast murderer and monster in the eyes of anyone else. 
    
"Bold of you to think I'd let you tarnish my reputation.  If it came to it, I can always have you removed if you're truly concerned for me," he cooed with fake gentleness as the hand in my hair tightened the tiniest bit, just enough to be a threat and yet it felt like a challenge.  I pulled him a bit closer by his shoulders with a well placed confidence that I knew he'd not be able to refuse. 
    
"As if you're even capable of turning me away.  We both know how attached you've gotten to me," I whispered wistfully, leaning up to peck his nose before leaning back.  Muzan stared at me in what seemed to be a trance before he smiled warmly, all teasing from earlier vanished from his expression replaced with only tenderness. 
    
"You underestimate me, my dear, and flatter yourself a bit too much.  It'd be easy for me to turn you away but I'm a gentleman," he pridefully stated.  His blood red eyes seemed to shine a bit brighter at what he must've thought was a spectacular performance of a lie.  I knew he wasn't being honest with himself though so I didn't take any of it to heart. 
    
"What a shame.  I should probably leave then," I sighed, sitting up abruptly and untangling his hands from my body.  His bright expression fell then as I turned my back to him, adjusting my robes for a second to make sure one side slipped to show off my shoulder.  I could feel the way his gaze burned against my skin as I stood.  I practically felt his disappointment and stubbornness warring with each other as I strode to the door. 
    
I didn't make it very far before Muzan's hands were gently trailing down my sides before landing on my waist firmly.  Not even glancing over my shoulder, I paused my movements to cross my arms in mock impatience.  His breath tickled the skin on my neck with goosebumps pricking down my arms. 
    
"Where do you think you're going?  We weren't done," he whispered into my ear.  His chest pressed into my back as his hands slid over my waist to capture me against him.  It was clearly a distraction from the neediness dripping from his tone that I absolutely noticed despite his feathery touches.  I hadn't fully realized how clingy he could be. 
    
"You made it seem like I was wasting my time.  I was just going to walk away before you had to turn me away after you were done being a gentleman," I smirked over my shoulder.  Muzan blushed a bit with embarrassment at his own words.  I chuckled at the expression, hoping he realized I was joking and just trying to point out his clear affection towards me.  The same affection I held towards him. 
    
"I'm sorry.  Please don't leave though.  I enjoy your company," he muttered against my neck, his lips brushing on my skin.  Leaning back into his chest, I relished the way his body warmed with mine.  It almost matched the burning sensation that was building in my chest as I felt Muzan place a gentle kiss under my ear and along my jaw. 
    
Slowly turning, I faced him to find his eyes deeper than I've seen them with an emotion I've rarely seen on him.  His hands adjusted to slide over my lower back as he pulled me into his body yet again.  My own hands rested on his chest when his lips brushed mine tenderly.  Sparks seemed to dance between us as we held each other. 
    
"And you're sure you want me here?  Gentleman or not?" I asked teasingly, biting his lip to accentuate my point.  He shivered at the action, his fingers digging into my skin pleasantly.  He seemed amused as he smirked into the kiss, his lips showing how much he truly wanted me.  He'd never be able to lie to me when he made it this obvious how he really felt. 
    
"Don't ever leave me," he whispered against my lips.  I hummed back, a silent promise that I planned to keep for as long as I could.  With his hands holding me close, I doubted he'd let me go even if I wanted to.