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jcmarchi · 10 months ago

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With programmable pixels, novel sensor improves imaging of neural activity

New Post has been published on https://thedigitalinsider.com/with-programmable-pixels-novel-sensor-improves-imaging-of-neural-activity/

With programmable pixels, novel sensor improves imaging of neural activity

Neurons communicate electrically, so to understand how they produce such brain functions as memory, neuroscientists must track how their voltage changes — sometimes subtly — on the timescale of milliseconds. In a new open-access paper in Nature Communications, MIT researchers describe a novel image sensor with the capability to substantially increase that ability.

The invention led by Jie Zhang, a postdoc in the lab of Matt Wilson, who is the Sherman Fairchild Professor at MIT and member of The Picower Institute for Learning and Memory, is a new take on the standard “CMOS” (complementary metal-oxide semiconductor) technology used in scientific imaging. In that standard approach, all pixels turn on and off at the same time — a configuration with an inherent trade-off in which fast sampling means capturing less light. The new chip enables each pixel’s timing to be controlled individually. That arrangement provides a “best of both worlds” in which neighboring pixels can essentially complement each other to capture all the available light without sacrificing speed.

In experiments described in the study, Zhang and Wilson’s team demonstrates how “pixelwise” programmability enabled them to improve visualization of neural voltage “spikes,” which are the signals neurons use to communicate with each other, and even the more subtle, momentary fluctuations in their voltage that constantly occur between those spiking events.

“Measuring with single-spike resolution is really important as part of our research approach,” says senior author Wilson, a professor in MIT’s departments of Biology and Brain and Cognitive Sciences (BCS), whose lab studies how the brain encodes and refines spatial memories both during wakeful exploration and during sleep. “Thinking about the encoding processes within the brain, single spikes and the timing of those spikes is important in understanding how the brain processes information.”

For decades, Wilson has helped to drive innovations in the use of electrodes to tap into neural electrical signals in real time, but like many researchers he has also sought visual readouts of electrical activity because they can highlight large areas of tissue and still show which exact neurons are electrically active at any given moment. Being able to identify which neurons are active can enable researchers to learn which types of neurons are participating in memory processes, providing important clues about how brain circuits work.

In recent years, neuroscientists including co-senior author Ed Boyden, the Y. Eva Tan Professor of Neurotechnology in BCS and the McGovern Institute for Brain Research and a Picower Institute affiliate, have worked to meet that need by inventing “genetically encoded voltage indicators” (GEVIs) that make cells glow as their voltage changes in real time. But as Zhang and Wilson have tried to employ GEVIs in their research, they’ve found that conventional CMOS image sensors were missing a lot of the action. If they operated too fast, they wouldn’t gather enough light. If they operated too slowly, they’d miss rapid changes.

But image sensors have such fine resolution that many pixels are really looking at essentially the same place on the scale of a whole neuron, Wilson says. Recognizing that there was resolution to spare, Zhang applied his expertise in sensor design to invent an image sensor chip that would enable neighboring pixels to each have their own timing. Faster ones could capture rapid changes. Slower-working ones could gather more light. No action or photons would be missed. Zhang also cleverly engineered the required control electronics so they barely cut into the space available for light-sensitive elements on a pixels. This ensured the sensor’s high sensitivity under low light conditions, Zhang says.

In the study the researchers demonstrated two ways in which the chip improved imaging of voltage activity of mouse hippocampus neurons cultured in a dish. They ran their sensor head-to-head against an industry standard scientific CMOS image sensor chip.

In the first set of experiments, the team sought to image the fast dynamics of neural voltage. On the conventional CMOS chip, each pixel had a zippy 1.25 millisecond exposure time. On the pixelwise sensor each pixel in neighboring groups of four stayed on for 5 ms, but their start times were staggered so that each one turned on and off 1.25 seconds later than the next. In the study, the team shows that each pixel, because it was on longer, gathered more light, but because each one was capturing a new view every 1.25 ms, it was equivalent to simply having a fast temporal resolution. The result was a doubling of the signal-to-noise ratio for the pixelwise chip. This achieves high temporal resolution at a fraction of the sampling rate compared to conventional CMOS chips, Zhang says.

Moreover, the pixelwise chip detected neural spiking activities that the conventional sensor missed. And when the researchers compared the performance of each kind of sensor against the electrical readings made with a traditional patch clamp electrode, they found that the staggered pixelwise measurements better matched that of the patch clamp.

In the second set of experiments, the team sought to demonstrate that the pixelwise chip could capture both the fast dynamics and also the slower, more subtle “subthreshold” voltage variances neurons exhibit. To do so they varied the exposure durations of neighboring pixels in the pixelwise chip, ranging from 15.4 ms down to just 1.9 ms. In this way, fast pixels sampled every quick change (albeit faintly), while slower pixels integrated enough light over time to track even subtle slower fluctuations. By integrating the data from each pixel, the chip was indeed able to capture both fast spiking and slower subthreshold changes, the researchers reported.

The experiments with small clusters of neurons in a dish was only a proof of concept, Wilson says. His lab’s ultimate goal is to conduct brain-wide, real-time measurements of activity in distinct types of neurons in animals even as they are freely moving about and learning how to navigate mazes. The development of GEVIs and of image sensors like the pixelwise chip that can successfully take advantage of what they show is crucial to making that goal feasible.

“That’s the idea of everything we want to put together: large-scale voltage imaging of genetically tagged neurons in freely behaving animals,” Wilson says.

To achieve this, Zhang adds, “We are already working on the next iteration of chips with lower noise, higher pixel counts, time-resolution of multiple kHz, and small form factors for imaging in freely behaving animals.”

The research is advancing pixel by pixel.

In addition to Zhang, Wilson, and Boyden, the paper’s other authors are Jonathan Newman, Zeguan Wang, Yong Qian, Pedro Feliciano-Ramos, Wei Guo, Takato Honda, Zhe Sage Chen, Changyang Linghu, Ralph-Etienne Cummings, and Eric Fossum.

The Picower Institute, The JPB Foundation, the Alana Foundation, The Louis B. Thalheimer Fund for Translational Research, the National Institutes of Health, HHMI, Lisa Yang, and John Doerr provided support for the research.

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hoshigray · 7 months ago

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˗ˏˋ ꒰ Do Your Job, Pretty Maid~! ꒱ ˎˊ˗ | jjk men

୨୧ choso, kento, satoru, suguru, sukuna & toji × how their sweet maid takes care of them...or tries to.

contents: JJK men x afab/fem! reader - explicit content; minors DNI - size difference (true form! kuna) - oral (f! + m! receiving) - masturbation - threesome - protected sex (psa: wrap it up, or get tf up) - sir/Master kink - sex toys - impact play (spanking) - degradation + humiliation - clitoral play - overstimulation - more stuff specified in their respective perspectives - satoru + suguru's parts are combined.

word count: 5.2k

a. note: going on another trip for two weeks, so here's a lil present while I'm m.i.a :3

₊˚⊹♡ Kamo Chōsō ⋮ oral (f! receiving) - clitoral play (licking + sucking) - pussy-drunk! choso - sqůirtǐng - pet names (baby, cutie, sweetie).

“Choso, please—Mmm…! We mustn’t…”

“Shhh, not so loud, sweetie…”

You cover your quivering mouth with your hands, eyebrows kneading together with toes curled inside your loafers, and thoughts running rampant at the sight of your master’s head buried within your skirt.

You were supposed to be dressing your master for an event that he’s supposed to attend, and you were almost done making him presentable for the occasion, combing his silky brown hair–usually kept in pigtails–down to his nape and spraying him with his cologne before buttoning his white loose long-sleeve.

However, he stopped your hands at the third button, the pale skin of his pectorals present to your eyes. Swiftly, you avert your gaze to his to see what’s wrong, only to yelp when he slumps to his knees and pulls you to him by your lower half, his face nestled to the groin of your skirt.

Of course, you tried to pull him off. “Master Choso, this is not the time!” You lecture him, trying to yank him off without messing up the hair you put so much work into making it nice and tidy! But his arms wrap around your legs tightly, pulling you in further.

“No, I can’t,” you can see the hint of pink enflaming the helixes of his ears. “I need this…need you,” his face is pushed deeper into the crevice of your thighs, the material of your apron and skirt not a bother being an obstacle. “You smell so good…”

“Choso, please, you mustn’t,” your eyes dart to the door to make sure it’s closed – thank God! “You have to get ready for the—“ Your breath hitches when a pair of caramel eyes peer in your direction, half-lidded with intentions that are NOT suitable for this time and place.

“Please, baby,” Oh God, that fucking name he calls you. You chew your lips to repress a whimper. “Just for a few minutes, okay?”

You can only take his words for what they are — an unguaranteed promise to cling to while you sit on Choso’s armchair, mewls escaping past your lips as your master ravishes you inside your skirt.

Choso’s soft lips kiss your wet folds, a shiver rattling your spine as you struggle to compose yourself. Your legs writhe and squirm, his slender hands playing with the garters of your undergarments and grasping the flesh of your thighs. His tongue nestles in between your inner labia, swooshing and slurping whatever his tastebuds can gather. And the groans he makes as he feasts on you are utterly dumbfounding — staggering your senses as his delightful voice travels through the walls of your insides.

Fingers scrape the arms of the chair, and your mouth falls to an ‘o’ shape, yet nothing comes out besides silent wails. His tongue flicks around your clitoris feverishly before sucking on it, and your thighs fight to jerk and clamp his head in. The noises of his feasting get louder and louder, the heat on your face picking up with every lap from the flat of his wet muscle.

“Master Choso…!” The named brunet pushes his tongue into your entrance, and you shrill with feet lifted from the floor. “Nnnm! Not too…fast!”

“Gonna cum, sweetie?” He coos while lathering your cunt with his saliva. “Gonna be good and cum on my tongue, right?”

“Hmmnn, no, not now!” You shake your head — not like he could see it from the barrier of your skirt. “We can’t! You have to be out there…people are waiti—Nnng!”

“I know, baby, I know,” another suck to your clit has your hands grab for the top of his head. “But cum for me this one time, ‘kay? Just one time…”

You couldn’t retort back as he pushed his tongue back inside, fucking you with the muscle to the point of balled fists. Losing balance, you slump on the chair and submit to the pleasure between your legs. Choso holds your legs by the back of your knees, pushing his face further to guzzle and play with your chasm easily. Ohhhh, shiiiit…!

“Ch-Choso, wait a minute!” You lift your skirt to stop the master, but the image of him eating you out did more bad than good. His jaw is wet from being latched to your soapy cunt, and his nose bumping to your clit forces you to twitch. “Wait, stop iiiit…!!” But it’s too late; your muscles contract more frequently than not and then begin to loosen once you hit your peak.

Your eyelids go shut, and you howl as your vagina flutters on Choso’s tongue while your urethra releases a watery substance that sprays around the vicinity of your skirt. Choso gets the better end; the clear liquid hits his face and sprinkles around your thighs and clothes. But that doesn’t stop him from sucking your essence, coating your vaginal walls and his tongue. He moans with you, your trembling figure bucking subtly while he gulps your high.

Mind is wholly fogged, yet your duties and responsibilities remain present, which is why you’re ashamed to see that the master is drenched from your arousal after you’ve put so much effort into making him look dapper — especially his hair, now it’s all messy and a bit wet! “Master, I told you to–ahhh–wait!”

Choso lifts his face and rests your legs on his shoulders, licking his lip and wiping his cheek with his sleeve — not the shirt, too! “Sorry, but you just tasted too good, cutie.”

You groan with a heavy sigh. “…Well, now I must grab a different shirt and fix your hair again. Hope you’re satisfied with yourself.”

“Guilty,” He doesn’t bother hiding the small, charming, cheeky smile; it almost made you forgive him for this endeavor.

₊˚⊹♡ Nanami Kento ⋮ sex toy; vibrator - oral (m! receiving) - masturbation - clitoral play - pet names (baby, love, sweetpea) - cameo: Shoko (phone call).

“…And that’s the report Ijichi handed regarding the last mission.”

“Good. What about from Gojo-san’s part?”

“Hmm, well, he hasn’t been…”

Was Nanami listening to the words Shoko was retelling? Sure. However, that wasn’t where his entire focus was. But then again, he has to ensure your voice isn’t picked up by his phone. After all, he’s sure you wouldn’t want his peer to know you were in the same room as him…thrusting a vibrator into your chasm while sitting on his desk.

You, his maid, came into his office to give him his typical afternoon tea, sprinkling the tea cup with warm water to exfoliate the earl grey and cream aroma. Nanami was busy on a call with Shoko, the doctor, who gave him updates on the missions that had occurred this week. A serious matter that required his attention, of course…well, most of it at least.

His eyes peer at you as you insert two sugar cubes into the tea cup and swirl them around with the spoon, noticing how eerily silent you are. How your fingers lightly tapped on the desk surface, and your lips shook slightly. And he knows why you hadn’t said a word; sure, he was on a call, but that’s not the half of it. The button he presses on the remote stuffed inside his pocket was, though, and your hand on the desk balls into a quick fist.

Now, you look to him, shaken by what he did. Trembly lips open to say, “Master…don’t do that…”

The blonde man lifts his brows, ears deaf to what Shoko’s saying, and presses the button again. This time, your hands rush to your lips to suppress a yelp. Your thighs come together to rub against each other, a gesture that pulls a smile on Nanami’s face.

“…But that’s just typical Gojo fashion, ya know?”

“Honestly, I can’t agree more.” He says aimlessly, too observant with you in his view. “Hold on a second, Ierie-san.” He presses the mute button and crosses his arms. “What’s the matter, sweetpea?”

Knowing that you can finally speak, you whine freely while running to his chest for him to catch you. “Master, pleaseee…!” God, you can’t stop rubbing your thighs!

“What is it, love?” He brings your chin up. Good Lord, you looked so cute and desperate. “Tell me.”

“Please, can I take this off!?” You lift your skirt, and low and behold, your panties are out for display. However, the white wire from your undergarments connected to the clip-on on your garters catches the man’s eyes. “It’s too much…and I can’t work with it!”

He smirks at your complaint and rubs your cheeks. “Sit,” he points to the desk for you to sit on, and you hesitantly follow his orders. Nanami takes the mute off the call. “Sorry, Shoko, something came up on my end, and I gotta take care of it. See you tomorrow?”

“No problem, Kento. Talk to you later.”

Now, with his friend out the way, you can finally have his whole mindfulness. As you spread your legs for him, the man runs a hand through his golden locks. “Show me what’s going on, baby.”

You waste no time in taking your underwear off with your master’s assistance, rolling up to your leg. Without the cotton barrier, your lower regions show the wire stuffed inside your wet cunt. His thumbs come to spread your folds to inspect further. “Damn, you’re so wet for me.”

Your breath hitches as Nanami swipes his fingers around your vulva, coating his digits with your wetness as your nerves are at their peak. “Master Kento, please…remove iiit…!”

“Well, since you asked so nicely,” he says with a chuckle, pulling on the wire string ever-so-slowly. You lay on your back as the thing connected to the wire stretches your entrance, peaking out of your hole thanks to the leisure force. Biting back a moan, Nanami pulls out the soft pink bullet vibrator crammed inside your swollen chasm and leaves you breathless for a second, gripping your skirt as your legs shudder. “Look at you, so beautiful.”

“Kentoo…” your hand wraps on his, gripping your thighs. “So good…”

“Yeah, feel good?” He blows on you. “Wanted me to take care of you like always?” You nod hurriedly to his amusement, and he licks your labia for you to wail. “Mmmm, my sweetpea…” Your legs have a mind of their own as Nanami licks your aching folds, bucking lightly to the point of you essentially riding his tongue—the blonde smothers your vulva with slobber, covering your private with him and your juices.

A free hand finds his hair to grab as you throw your head back and sigh heavily, sinking into the feeling of being eaten out by your superior. It feels way too good; after half an hour of having the vibrator stuck inside your slit, you’ve been walking around feeling nothing but sensitive to do even the most basic tasks. But now that Nanami is taking you out of your sole misery and fucks you orally, you can finally relax and experience the euphoria you’ve been yearning for.

…At least until his phone rings again, causing the man to lift his head from your legs to your dismay: another business call, this time with the boss, Yaga. Nanami’s mocha eyes dart to you, and he coos to your disheveled self. “Sorry, love, gotta take this.”

“B-But…!”

“In the meantime,” he hands you the vibrator. “Give me a show.”

You take the toy silently, begrudging, trailing it back down to your cunt for you to thrust in and out of your venture. And the moans you let out are divine to Nanami as he presses the green call button.

“Yes?… Yeah, I’m alone.”

₊˚⊹♡ Gojō Satoru & Suguru Getō ⋮ threesome - oral (m! receiving) - clitoral play (grinding + pinching) - missionary position - protected sex - pet names (baby, cutie, pumpkin, sweetie).

KNOCK–KNOCK!!

“Yo, Suguru, are you in her—WOAH!?”

“Uuugh, fuck, are you serious, Satoru? Can’t wait for me to tell you to come in?”

Oh, this had to be the worst day of your occupation life!

You weren’t supposed to be here; you were meant to be with the other maids around the fortress who needed a helping hand setting up guest rooms or preparing the feast for tonight. Today was big: your master’s best friend was coming over for the weekend. All hands on deck are necessary to make sure his attendance is welcome. Nevertheless, you end up trailing out of your tracks because your master, Getō Suguru, pulls you into his room without anyone noticing a thing.

The action left you bewildered, especially when he greets you by smashing his lips onto yours, exchanging murmurs and soft moans with each other while his hands grope and fondle whatever part of your body can reach. Of course, you try to retaliate, telling the tall, young man that he’s a terrible host for his friend and should be out there with him! But that doesn’t sway him at all, throwing you onto his bed and unbuckling his pants with a bitten lip. “He can wait,” he says in a sing-song tune, childishly pushing off his responsibilities. “But I can’t,” he crawls on top and kisses you passionately. “Wanna play with you a little more, ‘kay, sweetie?”

And who are you to refuse his request? You submit to him and let him spread your legs…What you did NOT expect, however, as you both seemed to forget to lock the door! And it’s worse, Geto’s best friend, Gojō Satoru, is the one to catch you both in the act. Are you fucking serious?!?

Gojo closes – and locks – the door for your sake. “Well, you can’t say I didn’t knock, right?” The taller man waltzes in as if he owns the place. You, under Geto’s bow, who is shirtless and whose cock is plugged inside your chasm, hide your face away from this mortifying experience. “Plus, what kind of host are you? Leaving me out there to wait for you for fifteen minutes.” Geto rolls his eyes as the white-haired man sits on the bed. “Now, who is this taking up all your attention?”

You don’t say a single word, concealing your shamed face behind your palms. God, just kill me!

“This is the new maid I told you about,” Geto admits with a grin, kissing your ankle. “They’re a pretty little thing…Hey, baby, don’t hide when introducing yourself.” The raven-haired man removes your hands from your face to your sorrow; pairs of blue and violet eyes survey you intimately.

Gojo coos, coming to your side. “Oh~, this is the new cute maid?” You don’t know if you like the way his gaze travels around your body, nor the way your vagina squeezes onto Geto’s girth as his friend rubs circles on your tummy. “What happened to your shirt?”

“This cutie went ahead and squirted on me,” you gawk at his blunt explanation; was there no other way to phrase that, you dummy!? “That’s why they’re a lil’ sensitive right now.”

His best friend piqued Gojo’s interest, “Is that so?” The hand on your stomach slithers down to your clitoris to grind on, and you jolt haphazardly. “Awww, you like that, princess?” Now it’s his turn to smirk mischievously. “Must be nice being used by your master, huh? And with an audience, too!”

“N-Noo!” You gasp from a pinch to your clit. “Master Gojo, please look awa—Aiiissh!!”

“Ehhh, and miss this view?” Gojo feverishly swipes on your clitoris while pressing his forehead against yours. “I’ve been dying to meet this new, cute maid that Suguru can’t keep his eyes off. Now, I see what’s got him all hot and steamy.”

“Ahhhh, shiiit, keep getting tight…!” Geto curses under his breath, snapping his hips to your tight slit. “Hmmm, I think they’re starting to like ya, too, Satoru.”

“Really? Aren’t you just adorable,” the snow-headed man claims your lips with his, shoving his tongue inside your mouth to drown. You whimper as he sucks on yours, toes curling as he cups and gropes your chest. “Fuck, so sweet…Hold on, lemme have a turn.”

Geto clicks his teeth. “You can wait, fucker. I’m trying to finish here.”

Gojo rolls his eyes yet straightens up to unzip his pants. “Fine then…Hey, pumpkin, can you suck me off a bit?” The taller man whips out his erection from the slide of his pants and boxers, and your mind nearly goes to a halt at the sight of the curved limb.

“Go on, don’t wanna leave our guest waiting, right?” Geto does nothing to make this situation any easier to go through, rutting his pelvis into you frantically to chase his orgasm. You are left with no choice and open your mouth with a loose jaw, and Gojo takes the initiative to insert his cock inside. “That’s my baby…Hnngh!”

Gojo fucks your face with a slow start before his flow follows with his dark-headed companion. The curve of his dick fills your mouth so much that your head gets fuzzier as he keeps thrusting into your lips. “Shiit, that feels good,” he murmurs above you, cradling your head gently as he stuffs your lips with himself.

The commotion on both ends of your body only furthers the headache forming and the heat from below flourishing all around. Still sensitive to your own high, your brain turns into mush, and you’re numb to the stimulation between your legs. Jesus, this was too much to keep up with; closing your eyes to help yourself succumb to the use of your body and allow the pleasure to course through.

Geto watches from above and loves every second of it. The picture of you taking in his best friend’s cock while he fucks you good and deep is so good. Your mewls are muffled because of the length between your lips, yet music to the men’s ears. “Fuuuck, I’m going to…Oh shiiiit…!” Your master can’t stop hammering his erect limb into you, flexing his abs erratically until he nearly gives way to his knees and busts into the rubber shielding his load. His frame shivers with every jerk, making sure every bit of his come is excruciated out of him.

Gojo takes it all in with a whistle. “Ahhhh, damn, that looks hot as hell.”

“Mmmph, you…have no idea,” The other man sniggers with a shaken head, sluggishly taking out his dick with the condom filled with his semen. After he takes it out and wraps the rubber, he throws a wrapped one to the snow-headed other. “Alright, time to switch.” The tall men share a look and switch places, Gojo now taking his place between your legs while Geto taps your lips with his girth until you suck him in.

If only the bed could swallow you away from this bizarre scenario!

₊˚⊹♡ Ryōmen Sukuna ⋮ impact play (spanking) - [anal] fingering (f! receiving) - humiliation + degradation - Master kink - pet names (little dove) - mention of drool and tears.

“—Khhhh!! Ahhhh!! Owwww!!”

“Yeah, that’s right, cry for me, bitch.”

It’s not unusual for a handmaiden to be reprimanded for bad behavior or not adequately doing their tasks. However, if you’re serving the King of Curses, Lord Ryōmen Sukuna, those corrections are likely to happen more often than not.

Imagine it: you’re bent over Sukuna’s massive legs, thighs so big and strong that you’re purchased with security if the firm hand gripping your wrists together wasn’t enough. Your skirt propped up, and your panties slid down to your knees, exposing your bare ass to the cool air of his chambers. However, that is swiftly transitioned to piercing heat and pain in seconds.

A hand comes striking down to your asscheeks — that had to be the twelfth time within these exact two minutes. The skin of your butt is nothing but hot; the man can feel it as he hovers the hand above them, making you shiver. Unpleasant tingling sensations course through the flesh, worsening with every new hit. And your throat is getting dry by how much you’ve been screaming. There is no way the other workers of this fortress haven’t heard your cries by now; you’re sure to be scrutinized by Uraume later today. Unbelievable…

Another smack to your butt pulls a yelp from your system, your body instinctively jolting from another rush of pain! Damn the huge lower left hand holding your wrists together. “—Hahh! Lord Sukuna, please! I beg you, please forgi—Iiiee!!”

“That’s all you’re good at, huh?” A dark chortle adds weight to your ongoing suffering. “Just begging and crying after I caught you being the little slut you are.”

Fuck, this couldn’t get any more humiliating enough. “My Lord, I’m so sorry for—Ahhckk!!” Another slap to your ass; this time, his nails dig into your flesh to extend your pathetic howl. And the thick digits of his lower right hand vigorously wiggle inside your vagina. You know your ass is going to be sore after this…

“Sorry for what: being a dumb clutz for knocking into things and breaking glasses left and right?” He bends to your ear to speak, and your inner walls squeeze his fingers helplessly. “Or going inside my room and touching things without permission?”

“I apologize for overstepping—Mmmph?!”

“Goddamn, so fucking loud, you fucking pig.” Sukuna stuffs two fingers of his upper right hand into your mouth, lips involuntarily sucking onto them. Now, he lets your wrists go to watch them grab hold of his pants; the sight of your nails scratching onto them like reins strokes his ego. Nothing makes him gloried than seeing a little thing like you break bit by bit in his presence.

Your whines are muffled; the only time an attempt to keep you quiet was made. Cruel of him to do as his fingers relentlessly rub your texture, and he inserts his thumb into your asshole to enfold the same pleasurable torture.

“Tell me, little dove, what excited you more: silently masturbating while sniffing my clothes on my bed,” tears form in your eyes from a harsh smack to your ass. “Or me catching you in the act? Because you didn’t seem to stop once you saw me.”

Please don’t talk about it! You can only complain within your thoughts, forced to listen to your misbehavior as a maid. And it’s torturous enough that your holes are clamping onto his fingers like crazy, eyes rolling to your skull from the scrape of your upper wall and the push and pull in your rear end.

“Go ahead, you dirty whore.” The emphasis on the last word makes you twitch. “Admit how big of a slut you are in front of your Master, how you’re good for nothing than to act like a bitch in heat.” A soft ‘pop’ leaves your lips as he removes his fingers. “Go on.”

“—Nndaahh! I’m so sorry, Master, I’m so—Ohhhh!!” Sukuna’s fingers in your chasm curl, his fingertips scratching your insides mercilessly.

“I didn’t say ask for forgiveness,” He scoffs.

It’s no use; the more you try to delay this, the dizzier you get. “… You’re right, master! I-I’m nothing but a sorry excuse of a maid who’s only—fuuuck!–only g-good at breaking things and not following orders!”

“And?” You can only imagine the most patronizing look he’s giving you.

“A-And…acting like a total slut that likes to be—Mmmm!!” Sukuna rubs your hot, stinging butt, removing his thumb to switch with another pair of fingers to tease your anus. “L-Likes to be used like a fucktoy by Master…!”

He purrs at your confession. “There you go; wasn’t that hard being honest, right?” The fingers in your ass and cunt go erratic, your shrieks returning to bounce off the walls. “Exactly that, a worthless maid who thinks about nothing but their whorish self. Not even bothering hiding how much you’re enjoying this…”

You wish he were lying; however, he was right on the mark. You’re nothing but a good-for-nothing maid who’s getting off to being reprimanded by your own master. And the fact that you cry out to your lower half spasms to his touches and concede to your orgasm doesn’t help your case. “Taahhh, ahaahhnn, ohhhshit, so good…!”

Your entire frame quivers on him, crying out loud as your crescendo shakes your whole being to your very core. Drool has long escaped your mouth, tears streaming down your face, and your hands gripping his pants. Jesus Christ, this felt way too good!

Sukuna clicks his teeth and pushes you off of his legs, your limp and dazed figure falling to the floor with no grace. “Tch, unbelievable. You really got a good high out of that, huh?” He looks to his lower left hand, which is smothered with your fluids.

“Haaahh, forgive me, Master…” Your throat is too weak and dry to utter sentences. But that doesn’t matter since Sukuna drags you back up to your knees by the scruff of your neck. Your eyes watch him unzip his pants and widen at the picture of his cocks springing out of his underwear.

“Quit speaking nonsense and do your job, you whore of a maid.”

₊˚⊹♡ Fushiguro Tōji ⋮ oral (m! receiving) - face+ throat-fucking - sir kink - musturbation (f! receiving) - facials - pet names (baby, doll[face], sweetheart).

“Hnnmm…ahhh shit, yeah, just like that.”

You chew your lips and swallow thickly. “Are you sure about this, Master?”

Forest green eyes peer down and pair with a crude grin. “Never said otherwise, baby. So keep goin’, yeah?”

“Yes…sir.” Your cheeks heat up, and your hands continue to stroke the erect shaft in your grasp.

A nice shower before heading for bed always hits the spot; nothing more rewarding than that after a day of going through hell and back. However, in Toji’s case, he loves them a lot more when you’re taking care of him and scrubbing his body clean of the stress and grit that taxed him during the day.

And that means scrubbing all of him.

You were on your knees on the tiled bathroom floor while Toji sat on the rim of the bathtub, situated between his damp legs as his body was wet from the hot steaming water of the tub. Supposedly, you were meant to take care of his laundry while he was showering and bathing. However, at the moment, your hands were grasping onto his erection, coated in soap, smearing it onto every dent and crevice of his groin.

You can’t tell what’s making your head fuzzy: the warmth within this bathroom or watching the tip of Toji’s dick being sheathed in and out of his foreskin as you jerk him off. What you do know is that the latter was too irresistible to marvel at, causing your stomach to do knots and the heat between your legs to twitch your insides. How embarrassing to be aroused by such a situation in front of your superior of all people!

And the worst part is the tiny glimpses you catch of your master panting and moaning because of your touch. His deep voice produces the most salacious noises as your fingers scrape around the glans to clean — you’ve been chewing on your lip nonstop because of them. The way you knead his balls with care has him hiss, and you nearly jump when he places his wet hand on your clothed shoulder.

Toji chuckles lowly, “Fuck, doin’ so good, doll.” He groans when you pour water onto his cock, cleansing the limb entirely with another dose. “Mmmm, feels good.”

His praise comments make you bite your cheek. “I’m glad you’re pleased, Master. You’re all clean.”

An onyx brow is lifted. “I don’t think I’m all clean yet.” Your look of confusion humors him, even after he grabs ahold of his length to tap the tip with your mouth, and your eyes widen. “Still haven’t felt that mouth of y’rs, hon.” Your mouth opens to reject, but another tap to your lips halts you from saying any words. “C’mon, sweetheart; no one’s ‘round to stop you. Plus, you know how I like bein’ sucked off.”

He doesn’t leave you any room to argue your way out of this, not to mention how close his dick is to your face. “…Yes, sir.” No words are said after that as you begin to lend him your service, coating your tongue with spit to drizzle from the top to watch it slide down his shaft. All for you to swirl around the cockhead before loosening your jaw and intaking his tip with a hum. And the older man coos with a head back, “Good girl…Mmmm…”

You bob your head steadily, taking him inch by inch until he hits the back of your throat. While one hand massages his balls and the other strokes him, you suck and dirty his limb with your saliva. Ironic, isn’t it: doing as your master commands in making his cock “clean” by giving him a fellatio in the bathroom? The way you mewl as the underside of his cock brushes the flat of your tongue is crazy, and you can feel the squeeze of your vulva worsening as time goes on.

Your hips sway on their own the more you suck on Toji, getting more light-headed from sensing his cock pulsate inside your oral cavity. And he chortles again, “Heh, enjoyin’ y’rself?” You moan as he bends down to grope your ass above your skirt, certainly aware that you’re getting more aroused. “What’re ya gonna do ‘bout that?”

The tip of his cock is released with the ‘pop’ of your lips, and your eyes lidded with bashful want. “Sir, may I please…finger myself?” Holy hell, your heart was pounding like crazy, even with how his spring-green eyes pierced through you.

You gasp lightly when he grabs your hand and licks your fore and middle fingers, covering them thoroughly with his slobber. “Go on,” he sucks on your digits before spitting them out. “Go wild, baby.” You nod before slurping his cock back into your mouth while your damp fingers venture down to your skirt and push your panties aside to insert them inside your vagina. Your whimpers are too cute to ignore, and Toji finally stands up to change the pace.

While your fingers curl and scratch the heat of your inner walls, Toji grabs for your head to fuck your face, the cadence growing more than mediocre. This time around, he’s busying your throat and face so much with the push of his pelvis that you can’t think straight. The sound of his balls hitting your chin is all you can hear, and your spit pooling around the ring of your lips is too raunchy to comprehend.

“Haaahhh, shit,” he curses from above, snapping his hips to go deeper into your mouth. “Shit, use that tongue, use—Mmmph…! Fuuuck, yeah, just like that.”

The praises fuel the rhythm of your fingers to go faster, rubbing on your texture as much as you can and your clit grinding against the bottom of your palm. Yet, it seems you can’t fully get off, though. Because of how full your mouth was with how fast Toji was slamming his cock inside your mouth, all you can think about is his length buried inside your vagina and reaching deep to kiss your cervix. Just thinking about it causes you to grip your fingers tighter.

“Ahhh, damnit, right there…!” The raven-headed man grits his teeth with the flex of his abdomen tightening, and his ruts increase. And before you know it, Toji rips his member out of your lips and fists his shaft until his load is expelled. White substance showers onto your face, landing on your nose and cheek, and bits drip down to stain your shirt. You gasp aloud before taking his tip to suck on again, stroking his pulsing dick until his hips stop bucking.

“Guess you’re all dirty, too, huh.” He sniggers and massages your cheeks. “But we got all night to clean ya up real good. Right, dollface?”

A soft noise leaves as you withdraw from his cock and place chaste kisses. “Yes, sirrr…”

“Good girl. Now, take off that skirt of y’rs.”

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bunny-jpeg · 12 days ago

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better than home (kidnapper!simon) - you had seen enough horror movies to know that being kidnapped meant being on the news, being butchered, and being a cold case. but simon wasn't like that. except for the bruises he left when he took you, his touch had gentle. kind in a way that someone would brush their cat.

you flinched under his touch, but he just simply shushed you. "not gonna break a thing on ya, angel." that was his name for you. angel. he said that it was like you were given to him fro heaven, "if i do, i give ya the right to put a knife between my ribs."

it was unnerving to say the least. in the tiny home you both shared, locks on the windows, you had never seen a front door that needed a key to unlock from the outside. you tried getting out, but simon was simply so much bigger and stronger, that he didn't need to hurt you herd you back into a safer place.

"don't need to think about much anymore. safer here." he said in his gruff voice. you didn't know what kind of life this man had lived, but with the hunting knife on the coffee table, the well-used rifle over the fireplace and the old army formals in his closet. you knew that there was a story.

it didn't sink in till the first week, but you didn't have to worry about anything. you moved through the house on your own, when you scurried into rooms simon sometimes didn't follow. it was like he was bird-watching. keeping a close eye and admiring you. except you weren't exactly a free bird, rather a delicate beauty in a shiny cage.

you were surprised that simon had your favourite snacks in the pantry, even the same brand of plant-based milk you enjoyed. it was like he knew everything about you, and yet he was a total mystery.

"scary world out there." simon said, kept his distance from you in the recliner while you were curled up in the couch. you had taken a liking to a black and white checkered flannel blanket. it reminded you of the one back home, that you wondered if he just broke in a took it. he eyed you, which made it hard to read one of your many books, "pretty things like you need to be protected... bad men out there." as if this massive mountain of a man wasn't one of those so-called bad men.

you were in no place to argue. you still felt like you were in a spring locked trap and one wrong move would have it clamped down on you. that this was just some sick game before simon buried your body in the field behind the house.

"when can i go home?" you asked, finding your voice.

"this is better than home."

"are you going to kill me?" you asked before you swallowed the lump in your throat.

he shook his head, "no, ma'am. never." sounded like wedding vows rather than an answer. your curiosity only grew with each day. when you finished the books he brought you, he simply put them back in a bag and returned them from where they came from and came back with new ones.

"saw them on the shelf at the library, thought a woman like you would like them." he gave a curt nod as he dropped the canvas bag by your little nest of blankets on the floor by the television. you hadn't been able to watch television yet. primarily busied with sleeping, books, puzzles and notebooks where you had been writing.

and while it started a journal in the event the police found you. it had become more about fictional stories. for your personal pleasure. you thought about being a writer as a child, but the grind of corporate work in your adulthood seemed to dash that dream.

"next time." you said, feeling a little bold, "can you get some science fiction books too...." it felt uneasy to make any demands. he was your captor.

"well then, angel. be good for me then." he said, smiled under that mask. you looked over and made a face at him. you scampered off back into your nest of books and puzzles. maybe he was right, this was better than home. <3

a/n: this is unwell, i hope you enjoyed it. thank you!!

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hanasnx · 3 months ago

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Not that I’ve thought about it but I just want clark to fuck me into the mattress after a fight, like legs up on his shoulders and all and then him being condescending and stuff, definitely red k Clark

MINORS DNI 18+

NOTES: DC is for December Event! — request DC characters.

“Not much—mm—to say now, huh?” RED!CLARK KENT grills you through his own grunts of effort, big hands clamped on your hips to stay in control of your movements. “Nothing for that shrill little voice to nag about ‘cept how hard I’m going.” Sharply, he exhales through his nose just as you gasp, his tip cutting a little too deep, shocking you at the touch of your cervix. It’s the position, it just makes it too accessible. Your feet bob next to his head with every sheathe while he keeps you folded over yourself with his weight.

“You are going too hard—!” you complain, but it’s just to get at him. Rough fingers press into your flesh, and you cry out as he uses your words against you.

“See what I mean?” he remarks, and the smirk in his lips exposes one of his famous dimples. Curtly, he adjusts you, propping himself up over you so he can lay his body over the backs of your thighs. It raises your hips naturally, makes the fit a little more comfortable. At the sight of your fluttering eyes, he leans in for a kiss, sucking on your pliant lips while the sounds of sex fill the room. He lets off with a pop, but murmurs against your mouth, “No matter how much we fight,” that irresistible Clark Kent charm shines through in his grin, flaring up your irritation at how easy it is for him to get you to forgive him. His head nods up. “Your ankles always have a place on my shoulders.”

#2k #DC is for December Event!#indy: drabbles #ch: red!clark #clark kent drabble #clark kent prompt #clark kent smut #clark kent x reader #clark kent x fem reader #clark kent x you #clark kent x y/n #clark kent imagine #clark kent fanfiction #superman smut #superman x reader #reader insert

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seisubhanamiexchange · 5 months ago

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Banner: Nov 2024

Sign ups are now open for the SeiSub Hanami Exchange’s 2024-25 round!

Want to create content for our favorite dysfunctional couple? Want to be a part of a community of like-minded folks? This event is for you! Join us in SeiSub hell, and while you’re at it, drag your friends into hell with you! Please give our FAQ and Schedule a read first.

The invite link to the Seisub Hanami Exchange Discord server will be shown after you sign-up. If you need another invite link, don’t hesitate to email seisubhanamiexchange@gmail.com using the email you signed up with. Sign-ups will be open until Nov 29, 2024 at 11:59 P.M. / 23:59 UTC.

CLICK HERE TO SIGN UP

#seisub #x/1999 #x 1999 #tokyo babylon #clamp #seishirou sakurazuka #seishiro sakurazuka #sakurazuka seishiro #subaru sumeragi #sumeragi subaru #seisubhanamiexchange #x1999 #tbx #clamp events #seisubhanamiexchange2425

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seisubtanabatafest · 2 years ago

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SeiSub Tanabata Fest 2023 Prompts and FAQ

Welcome to SeiSub Tanabata Fest 2023! July 7-13, 2023

#SeiSubTanabataFest is a fest ship event organized for Sakurazuka Seishirou and Sumeragi Subaru. Pick whichever version of CLAMP works you feel like creating something for with SeiSub (Tokyo Babylon, X/1999, Tsubasa Reservoir Chronicle, etc.). It is in celebration of the coming Tanabata (July 7th in Japan). Each day features prompts relating to traditions or imagery commonly associated with Tanabata. It will run from 7 July to 13 July 2023. It marks the halfway point (138 days) in between Seishirou’s birthday (November 22nd) and Subaru’s birthday (February 19th). This indicates their relationship as star-crossed lovers, which makes their relationship on Tanabata all the more intriguing.

Everyone is allowed to participate!

DATE DAY PROMPT

Jul 7 DAY 1 - soulmates red thread of fate marriage Jul 8 DAY 2 - stars constellations deities Jul 9 DAY 3 - FREE DAY (choose your own prompt) Jul 10 DAY 4 - longing separation reunion Jul 11 DAY 5 - wishes bamboo tanzaku Jul 12 DAY 6 - promises Milky Way punishment Jul 13 DAY 7 - kimono paper cranes lanterns

Click the jump for the FAQ. Feel free to ask questions!

FAQ

How do I participate? Create something in line with the themes above and just tag #SeiSubTanabataFest! We also have a SeiSub Tanabata Fest Ao3 collection available for you to post to. Fic, art, podfics, webcomics, moodboards, etc.—it’s all welcome! As we will be retweeting and reblogging posts for the weekly fest, please make sure to check our socials to support all the participants! Twitter (@SeiSubTanabata) Tumblr (@SeiSubTanabataFest) The AO3 collection is here: https://archiveofourown.org/collections/SeiSub_Tanabata_Fest/profile Can I use a work I’ve already started? Yes, if it fits the theme of the day you are posting on and the work has not been published yet. Do I have to include all the prompts listed for the day into my work? That isn’t necessary. The prompts are merely suggestions. Can I include other prompts not included in prompts for the day? Of course! Again, the prompts are merely suggestions. As long as your work follows at least one prompt for the day, you can submit it. Do I have to participate every day? No, that is not necessary. What if my work incorporates prompts from 2 different days? You can choose to post it on any of the 2 days, e.g. if you write a fic of characters being soulmates and stars, you can choose to post it on either day 1 or day 2. Can I submit a late entry? If you’re posting while the event is running (between 7 July and 13 July 2023), we are fine with that. However, if you can’t make that day, we will accept late entries. Keep in mind you will be posting outside the original posting period, but you can post whenever you can post afterwards. Are there any content restrictions? No, we do not believe in restricting problematic fictional content. As long as it’s properly tagged, we accept content of all ratings and themes. Are there minimum requirements for works? No. Do whatever you want as long as you create a work for the event. It can be any length or amount of effort you want to put in. What does "FREE DAY - choose your own prompt" mean on Day 3? You can choose a prompt that is not on our prompt list to use. This day has the most flexibility for the idea you want to create.

#CLAMP #Tokyo Babylon #X/1999 #X 1999 #Seishirou Sakurazuka #Sakurazuka Seishirou #Subaru Sumeragi #Sumeragi Subaru #SeiSub #SeiSubTanabataFest #TBX #CLAMP events #東京BABYLON #星昴

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valyvinny · 4 days ago

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ׂ╰┈➤ ❝Love and deepspace boys ˚ʚ♡ɞ˚ Their favorite part of you❞

PAIRING : Caleb x reader, Sylus x reader, Zayne x reader, Rafayel x reader and Xavier x reader GENRE : Fluff + Smut WORD COUNT : 1k TAGS : NSFW, Sexual themes, Hickeys, Breast fucking, Handjob, Mastrubation, dacryphillia A/N : HIIII It's been a while. I'm done with exams and I'm just waiting on the results. In the meantime, I wrote this small piece to kind of get back into the groove of writing. My next piece will deffo be longer and more detailed than this! Anyways, enjoy!!

Which part of you do the Lads boys absolutely adore?

── .✦ Rafayel

Rafayel’s favorite part of you are your hands.

He loves it when you caress his cheeks, nuzzling into your palm like a cat. For someone who despises them, he strangely has many feline characteristics.

Rafayel adores the feelings of your fingers carding through his hair, lightly scratching his scalp when he’s lying on your chest on a lazy afternoon. The action makes him feel almost drowsy.

He loves holding your hand in his, feels a sense of reassurance when you squeeze his that you’re here, you’re real and you’re his.

But he also loves watching your fingers slide in and out of your pussy, your head thrown back in pleasure as you alternate between rubbing tight circles on your clit and feeling your warm walls clamp down on your fingers. You’re a damn tease and you know it.

Other times, the sight of your hand wrapped around his cock sends him into a frenzy.

There’s something vulnerable and unbelievably sexy about leaving his pleasure in your hands. Each stroke combined with you thumbing his slit bringing him closer to the edge

Every flick of your wrist has him aching with need, long drawn out moans leaving his lips as he begs for release.

── .✦ Zayne

Zayne’s favorite part of you are your eyes.

He adores how expressive they are — how they crinkle with joy or laughter, how they widen in surprise whenever he stops by your apartment, and how they narrow with determination when you're deep in concentration.

But most importantly, he cherishes the way you look at him.

Your eyes soften when your gaze shifts to him, instantly lighting up in his presence. Almost like he’s the most precious thing in the world. He preens under your attention.

He also loves how they fill with tears of pleasure when he’s rolling his hips into yours, hitting all the right spots.

Zayne is very intentional with his thrusts. They’re slow and measured but so so deep, reaching places in you that your own fingers can barely touch.

But Zayne’s favorite part is holding your gaze, watching your brows furrow with each thrust, his thumb wiping away the tears that fall from your eyes and trickle down your cheeks.

“Shhh, I’ve got you” he whispers, not once looking away from you, drinking in the sight of you so debauched. You flush under his hot gaze.

It’s intimate and overwhelming at the same time, but neither of you would have it any other way.

── .✦ Sylus

Sylus’ favorite part of you is your back.

Whenever you’re together, you’ll always find a protective hand placed on the small of your back guiding you through busy streets.

He’s subtle with it, his hand is barely there allowing you to move around freely while also serving as a warning to anyone who dares to lay a finger on you in his presence.

In the rare event that the both of you have time to spare, you’ll often find yourself in the N109 zone, in Sylus’s room of course.

You have your head on his chest and his hand drawing circles on your back as you spend your time simply talking and catching up on the happenings of the week.

Sometimes, Sylus would lightly drag his fingers up your spine causing you to erupt into a fit of giggles, interrupting your conversation.

“It tickles” you’d complain, with no real malice in your tone.

However, the most delectable sight is definitely your arched back when you’re close to cumming. The delicious curve of your spine lifting off the bed while you push your head into the pillow, barely restraining the wanton moans that escape your lips.

Other times, he has you lying flat on your stomach, pressing kisses down your spine as he thrusts into your wet heat. When he feels you shudder in response, it only urges him to go quicken his pace.

── .✦ Xavier

Xavier’s favorite part of you is your neck.

At the core of it, Xavier’s favorite activities include sleeping and cuddling. Combine the two, and he’s a happy man.

That’s why on most mornings you find that he can’t resist the urge to nuzzle into your nape. Savoring the warmth of your body while brushing his nose against the sensitive skin of your neck.

When you have your back against him, Xavier will take the opportunity to sneakily wrap his hand around your waist, burrowing his face in your neck, earning a surprised yelp from you before the action reduces you into a fit of giggles.

These instances were playful, innocent even

A stark contrast to when he’s caging you between his arms and the bed, ravaging your throat like a man starved. Each kiss is accompanied by his teeth sinking into your skin followed by his tongue laving against the spot in apology.

This combined with his needy thrusts had you absolutely delirious. Your moans along with your sharp hisses from each bite would only spur him on further. Rest assured, you wouldn’t be leaving until Xavier had your neck sporting hues of blues and purples, successfully claiming you as his.

── .✦ Caleb

Caleb’s favorite part of you is your chest.

It’s no secret that a good nights sleep is hard to come by for Caleb. He’s often plagued with nightmares. Some of them are your days in the lab being experimented on, others of you dying because he failed to protect you.

Every time he jolts awake, he turns over to your sleeping form and lays his head on your chest. The sound of your heartbeat slows his own racing pulse and heavy breathing. Reminding him that you’re very much here and alive. The steady thrumming lulls him back to sleep.

Caleb feels a streak of possessiveness when he sees you wearing your apple necklace. The dog tag dangling down your chest satisfies a part of him, knowing that you always have a piece of him on you at all times.

But nothing compares to having you bare chested in front of him. He takes his time with you, teasing the bud in between his fingers while nipping and licking the other one, the action earning your long drawn out moans.

He’s relentless with it, sucking and biting until your nipples are swollen and hard, littering purple marks around the skin of your breasts.

When he’s feeling particularly needy, he fucks your tits like there’s no tomorrow. Frantic thrusts as you squeeze your breast together making a tight vice for him to fuck. And he isn’t stopping until he has his cum splattered across your chest.

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