#underbed monster!simon riley | Explore Tumblr Posts and Blogs

sweetiecutie · 5 months

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Warnings: smut, mdni, monsterfucking

Even though underbed monster! Simon is a brat and very often a nuisance, he still cares about you!! You are his favourite hooman after all, his feeder, gladly allowing him to nourish off your energy, giving him small treats and indulging in all his little whims. So of course Ghost is worried when you come back home after having an especially bad day, all hot and bothered, chucking down a few glasses of whiskey to ease your mind - but it didn’t seem to help much. Ghost feels the need to soothe you, to make you forget all the bad events of the day, empty your head of all the thoughts and worries, to make you feel good and loved!

That’s why your not so little monster urges you to take off your clothes, his tentacles spreading your thighs open, exposing your gorgeous pussy to his crimson eyes. One tiny tentacle wraps itself around the needy bud of your clit, rubbing it softly yet firmly, causing wetness to drip down the cleft of your ass in a matter of minutes. Simon makes sure to hit and nudge all of the special spots within your soft cunny as he stuffs you full of himself, making you squeal and writhe in pure pleasure under him, your eyes rolling back and toes curling as you cum repeatedly.

And only after turning you into a sobbing boneless mess, all fucked out and happy, does your underbed monster ease three of his tentacles out of your sore and raw pussy, wrapping himself around your still trembling form and purring satisfyingly somewhere in your neck, clinging to you for some warmth.

Underbed monster! Simon likes you very much after all, so he does everything in his power to keep his favourite hooman happy<3

Requests are open<3 Feedback is very appreciated, give writers some love🩷

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sweetiecutie · 5 months

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Hi!

I fell in love with ur underbedmonster!simon au!

And I am sure everybody else fell in love with it.

Can we get some more stories with monster simon? If it's no problem, of course :)))

Love your work btw <33

A/n: sure you can, I think that this trope is my new obsession🫣☺️

Warnings: smut, mdni, possessiveness, monsterfucking, tentacle fucking

Part 1 || Part 3 || Part 4

Underbed monster! Simon who was slightly startled by such sudden change in your aura - once sugary sweet and syrupy turned into bitter and pungent, causing creature to sputter and hiss begrudgingly at the taste, his ears (or whatever that was that he had) straining to hear any words coming from you that could explain this drastic shift in your emotions.

Underbed monster! Simon who listened attentively as you spoke on the phone with your best friend, choking on your own tears and sobs as you told them how you broke up with your now ex boyfriend, about the ugly fight you had, how he called you numerous names, shattering your heart in million pieces just with his cruel words.

Underbed monster! Simon who felt rage simmering somewhere deep within him. How dare that pathetic scumbag treat you like that!? Yes, Ghost did torture you with horrible nightmares quite a few dozens times, but you were his human, his to scare, his to taunt, his to fuck, no one else’s. He felt possessive and angry, he wanted to soothe your poor little heart, to make all the pain go away so you could feed him more and more of that honey-like energy that your pleasure exuded.

Underbed monster! Simon who finally decided to take matters into his own hands after keeping a close eye on you when your state didn’t seem to get any better. Ghost sneaked out some of the sweets from kitchen to your bedroom so you had something to munch on, making you confused as to how those candies seemed to magically appear on your bedside. Simon tried keeping the house tidy and clean for you in hopes that it’ll make you get better soon, he even did your laundry once, causing you to freak out at the sight of your clothes, freshly washed and still damp, hanging off the rope to dry out.

Underbed monster! Simon couldn’t be more happier, watching your attention finally shift from your shithead ex to him. Simon was purposefully lurking right in the corner of your vision, making his presence in the house way more obvious. He watched with fierce amusement as you grabbed the sharpest knife from the kitchen, inspecting every nook and cranny of the house, not finding any signs of intrusion or anything that could’ve given a clue about another person’s presence, scrunching up your pretty eyebrows in confusion.

Underbed monster! Simon who fully revealed himself for the first time in your dream, standing in his full glory in front of small scared you, your breathing quickening in your sleep as you inspected his tall dark form, two red eyes glaring down at you from above. You felt paralysed as you watched this creature raise its smokey limb that slightly resembled human arm, cold tentacle fingers brushing your cheek, tucking a loose strand of hair behind your ear affectionately. And all of the sudden all fear and anxiety vanished, leaving place for curiosity and amazement as you studied monster’s features closer, not feeling threatened nor endangered by him. Slowly its mouth opened - even blacker that the rest of him, his voice clear and lucid, ringing right inside of your head “Wake up”

Your eyes snapped open - you were laying in your bed still, crumpled sheets dug into your back unpleasantly but you couldn’t care less as you stared straight into those crimson orbs, cold tentacles slithering up and down your sides, wrapping tighter around your limbs, immobilising you completely. Underbed monster! Simon just purred audibly at your obedience and lack of resistance, branching a few more extremities to slip under the hem of your pyjama top and wrap around your nipples, tugging and tweaking on them softly.

Underbed monster! Simon who growled satisfactorily at the small wet patch that started forming on your panties, slowly rubbing your sweet pussy while applying more and more pressure to his touch, watching you writhe and whine underneath him, begging for more.

Underbed monster! Simon who purred as he slipped a thick tentacle past the hem of your panties, stuffing your fluttering cunny so full of himself, finally that rich taste of your pleasure simmered right through him, filling his ghastly body with strength and energy he lacked all this time you were depressed. Newfound strength just nagged him into fucking you faster and harder, twisting out your nipples and rubbing your clit rapidly, all while forcing his thick tentacles in and out of your leaking cunt, making you scream and tremble in his inescapable grasp as fourth orgasm rippled through your weakened body, pure pleasure surging through your veins, hogging up your mind and making you incapable of thinking.

Underbed monster! Simon who only let you go when first sun rays peaked in through bedroom’s window, leaving you a fucked-out yet blissful mess, pinching you on your cheek affectionately before slipping under your mattress, curling up like a huge lazy cat and falling asleep, full of your delicious pleasure.

And even hours later as you peeked under your bed you could see a huge black spot there, still and unmoving; and if you listened closely enough you could hear your underbed monster purr softly in its sleep, happy and properly nourished.

That’s quite a pet that you have now, eh?

Likes, reblogs and comments are highly appreciated, don’t be shy to give writers some love! Requests are open, so send me some stuff<3

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sweetiecutie · 5 months

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Underbed monster! Simon who was absolutely delighted when you first moved in. Such a pretty little thing, so sensitive to subtle change in aura whenever he stirred under your mattress, making you throw a concerned look around your room, trying to figure out what exactly it was that disturbed you. How, he was going to have so much fun with you!

Underbed monster! Simon who just can’t help himself from looming over you while you sleep, carving every smallest detail of your cute face into his memory. Can you blame him tho? Not when you’re all soft and vulnerable before him, smacking and pouting those puffy lips as creature’s presence caused your dreams to take a darker turn. Your fear tasted delightful.

Underbed monster! Simon to whom you’ve woken up quite a few times, looking up straight into those red glowing eyes until your sleep paralysis worn off, this creature disappearing immediately after you finally regained your ability to move. But you never thought too deep into that. After all he was just a figment of your imagination, right?

Underbed monster! Simon who started to grow fond of you rather quickly. He liked it how tidy you were, not intruding his space with empty bottles and whatever else trash - unlike past inhabitants of this house. He quite literally lived for nights when you were restless in your bed, finally giving up and opening a drawer of your bedside, retrieving pink dildo from within. Slowly but surely Simon shifted his diet from negative emotions from the nightmares he was causing to your positive, way sweeter feelings. Oh how delicious your pleasure was, Ghost literally purred while absorbing all the joy every orgasm brought you, your moans being too aloud for you to hear any strange grumbling.

Underbed monster! Simon who finally dared to touch you months after you moved into his place. He picked the perfect moment for it, right when you were on the very edge between reality and daydream, mind barely comprehending what was real and what was not. His black smokey tentacles crawled up from under the bed, slowly making their way to you plastered on your soft mattress, gently wrapping himself around your ankles. You paid no mind, mild coolness felt good against your hot skin, so you didn’t even think into it.

So underbed monster! Ghost shamelessly continued, his tentacles boldly slithering up your shins and then to your plush thighs, soon sliding under the hem of your panties. Wrapping himself around your clit and stuffing your pussy full of his appendages, literally purring at the taste of your pleasure mixed with slick, how blissful your velvety walls felt against him.

The next morning you woke up, only recalling some snippets of embarrassingly good wet dream you had, your cunny strangely sore, slick and overstimulated.

Underbed monster! Simon who has so many delightful and pleasurable things planned for you two, you just wait<3

Part 2 || part 3 || part 4

Requests are open<3

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sweetiecutie · 5 months

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Hi!!!!!!!!! I absolutely adore your underbed monster! Simon fics! I was wondering if you could write another one with more fluff? Just domestic stuff, like him curling around the reader while they sleep or something like that. Just him being a sweet, happy little housecat, I guess. Anyway, I love all your stuff! You're amazing! Thank you!

part 1 || part 2 || part 4

Domestic hc’s about underbed monster!Simon

Underbed monster! Simon gives off big fat moody cat vibes. He doesn’t like it when you try to initiate any contact in the very beginning, hissing surly whenever you peeked underneath your bed to check up on him or ignoring you blatantly when you tried talking to him. You’re his first friendly human as well, it’s just against Simon’s nature to be anything but hostile and mean to people (he’s a sleep demon after all), but he’s trying his best.

The first actual improvement in your “relationship” was when you pushed a few chocolate candies under your bed - “here, maybe you’ll like them”. Simon didn’t react to that in any way, slumbering quietly underneath the mattress, not acknowledging you in any way. So you just shrugged, going back to minding your own business. As you woke up next morning, the sweetest dreams following you throughout the whole night, shiny candy wrappers scattered on the floor caught your attention, two wide red eyes staring at you from within the darkness as you peeked under your bed to check on your not so little monster.

If underbed monster! Simon feels like you’re not giving him enough attention creature, as a brat that he is, will give you some trouble, letting you know that he is not pleased with how you treat him (he literally was torturing you with horrifying nightmares the first few weeks after you moved in). He’ll hide your stuff so that you’ll have to plea and sweet talk with him to give it back, or even push your favourite mug with still hot tea over the edge of your working desk, smashing pretty ceramic and spilling aromatic infusion all over the place. Is it a sign clear enough for you to stop your silly typing on your laptop and coddle your monster for a bit?

But the more you get to know each other - the clingier Simon gets. Curling himself around your calfs while you work on your laptop, or acting as your backpack while you cook, causing you to grumble about his additional weight hurting your back. If underbed monster feels good enough, he may even fetch some stuff for you, but you better thank him profusely and praise him for his attentiveness - otherwise he’d get grumpy and may give you some shit again.

So, underbed monster! Simon is sort of your pet at this point - a huge, terrifying, dangerous pet. But he will hide his deadly tentacles for a few minutes and show off his tummy for some rubs once you’re back home from work, carrying a fresh pack of sweets for him<3

Likes, regblogs and comments are highly appreciated, give writers some love! Requests are open - send me some silly stuff<3

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