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“There was a delay in shipment and the part won’t make it to you until–” Katsuki jerked the phone away from his head as a loud explosion interrupted Hatsume, “Friday night,” she continued with a sigh.
“Friday night?” Katsuki grumbled, trying his best not to sound like a child on the brink of a temper tantrum.
“Hey, you’re asking for quality, rarely obtainable material. For some kinky shit, I might add. You can wait,” she argued absent-mindedly, “Gotta fix my baby, bye-bye,” Hatsume sang, pushing Katsuki into further irritation.
Tossing his phone onto his workbench, he threw his head back in a groan, scrubbing a hand over his face as he looked at the lifesize robot that stood next to him. Heat spread through his gut just as much as disappointment did. He thought he would have it done by now, but he just had to make the last-minute decision of giving this doll interchangeable parts. He’d already used up the material that made the inside of its ass feel realistic, but he just had to give it a pussy, too. Although he thought about it, like hell he was going to stick a pocket pussy in there and call it a day. He wouldn’t half-ass this.
With one final groan, he composed himself, bringing a hand up to pinch at soft, blond hair. It took an eternity to color match the tracks perfectly to his. An audible gulp bobbed through his throat as he cupped the bot’s cheek. It wasn’t that difficult to get the face right, a simple scan and three samples produced a perfect clone. Now, the lips, that was a bit trickier. He couldn’t get the plumpness right. It made him doubt whether it would feel good against his own or not.
The hair on his arms stood at attention as anticipation rippled beneath his skin. Worrying his bottom lip between his teeth, he leaned forward, face inching closer and closer to his clone’s. He knew it wasn’t on. Everything in him– mainly the growing tent in his pants– was begging him to turn it on. He just wanted a quick taste. A small peck. Just to have a feel for himself. He sucked in a breath, holding it in as his eyes fluttered close, hands on the bot’s shoulders to keep himself steady as their lips brushed together. The doll’s top lip was just about to be sandwiched between Katsuki’s lips when the loud chime of his doorbell caused him to flinch back. He begrudgingly marched to the door to find a sizable package on his welcome mat.
“I just like teasing you, have fun,” the note read as it sat atop the cylindrical material that mimicked soft tissue.
Katsuki didn’t get a wink of sleep that night. He worked like a madman to complete his creation. Triple checked his code in between making sure that every bolt and hinge was padded by a soft medium. He was covered in a nice layer of sweat by the time the sun shone through the shutters. He stepped back to admire his masterpiece, gnawing on the tip of his finger in anxiousness as he watched his doll wake up, ruby eyes glowing with a spinning center signaling its power up.
—
“Do I feel good, Katsuki?” the bot whispered as it looked up at its maker. Katsuki expelled all the air from his lungs, finally reminding himself to breathe after the initial squeeze into the doll’s cunt. It was definitely worth the extra money. The best hole he’d felt in a long time. The question of if he actually felt that good inside was a fleeting thought, something he tucked away for later when he wasn’t balls deep in himself.
“S’tight… so warm…” He panted, noting how the doll’s pussy hugged him just right, adapting to his facial expressions and grunts. A gasp left his throat as it adjusted the pulse of its cunt’s clenches, timing it so it would constrict ever so slightly right before Katsuki pulled back. “That’s… that’s good.” Katsuki moaned weakly, his head falling to rest on his clone’s shoulder.
Intimate comfort filled his chest as he felt a soft hand cup his cheek. That was one of the few things he had changed on this replica. He always hated how rough the closed side of his hand was. Every inch was littered with calluses.
“Want you to cum inside,” his doll whispered in his ear. “Want you to watch when you fill me up.” Katsuki had felt so silly sampling his voice, downright refusing to say such fucked out expressions as he sat alone in his workshop. The most he was willing to do was say the dirty words, trusting the AI to do the rest of the work and, god, did it deliver.
He slowed his hips, peeling his body away from the bot to sit on his haunches. Bending the bot’s legs at the knees, he maneuvered them up to its chest creating the perfect frame for the small window that began to appear. A perfect display of his cock being milked right before him, the tip bullying the doll’s squishy cervix. It had him biting his lip until he could taste iron on his tongue. He was mesmerized. Its insides fluttered and twitched like it was alive, natural. Completely uncalculated.
The doll’s moans began rising in pitch, thighs twitching in Katsuki’s hold, toes curling. Expletives fell from its mouth like it was truly feeling pleasure, like Katsuki was making it feel that good. It pushed the inventor over the edge, hot cum flooding into his double’s womb. “Don’t stop, want it all, give it all to me,” it whined like a needy slut, fingers digging into Katsuki’s shoulders. A garbled moan ripped from Katsuki’s throat as his gaze flicked to his creation’s face. For a split second, he began to question himself. He wondered if there were some sort of negative ties to the response he was having right now. Was it fucked up for him to get turned on by his own face? The bot now slack-jawed, eyes rolled to the back of its head.
Katsuki’s hips twitched, his body craving more despite the growing overstimulation, cock already flagging inside himself. A small part of him wanted to activate the special feature he’d been dreaming about since he began drafting this project, but he held back. It’d be better suited for another time.
When he willed his hips to stop moving his clone looked up at him with half-lidded eyes. “Do… do you think it took?” it whispered breathlessly, moving a hand to rub at its transparent belly. Katsuki would never have used ‘corny’ as a word to describe himself, but he couldn’t stop himself from replying with, “let’s keep going until it does.”
Without sparing a moment to pull his cock out, he was already flipping the doll over, pushing its face into the sheets. His grip on its plush hips was bruising, pummeling into its pussy without abandon. The fact that the bot couldn’t actually perceive any pain, let alone pleasure, drove Katsuki’s thrusts.
—
Katsuki was gasping for breath, staring up at the ceiling as the mess of cum and lube cooled on his pelvis. He barely registered the bot moving off the bed until the mattress dipped by his side.
“Master, would you like to try this now?” The bot looked down at him innocently, a faint smile tugging the corners of its mouth as it held up an exact replica of Katsuki’s dick, balls and all. The only difference was that the base was to be rigged securely to the bot’s pelvis, and it was flaccid. Katsuki’s pupils dilated, anticipation bubbling in his chest as he nodded dumbly.
“Take care of me, daddy,” Katsuki whispered, watching the clone blink slowly, irises pulsing as it spun, Katsuki having activated the trigger words. Once his creation’s eyes returned to normal, it focused back on the inventor, smiling gently down on him.
“I’ll take care of you, baby, don’t worry,” it replied softly into Katsuki’s ear, reaching down to click its cock into place. The inventor’s eyes flicked down to its pelvis, sucking in a slow breath as he watched it twitch and ever so slightly plump up as the doll nibbled at Katsuki’s earlobe.
Katsuki let his eyes close to focus on his breathing, his skin buzzing like a live wire with every kiss the doll left trailing lower and lower. Stopping at his chest it led the kiss with its tongue, flicking the tip across a bud before encapsulating it with wet warmth. God, it feels so real, Katsuki thought to himself, taking pride in the detail he poured into this project. The bot’s tongue was soft and spongy, the right amount of wet. Pin-point accurate sensors heating the cavern just hot enough to give Katsuki a hissing warmth.
“So sensitive,” it spoke against Katsuki’s skin, making sure each syllable rolled his sensitive peak between its tongue. Katsuki whined, unable to stop the buck of his hips as the stimulation sent a bolt of pleasure right to his cock. The doll moved onto the next one, using an unoccupied hand to toy with the other, looking up through its eyelashes to analyze each small twitch in Katsuki’s fluid expressions. It continued its descent down Katsuki’s body once a small puddle of precum pooled onto the engineer’s belly. It spread its maker’s legs nice and wide, bending them at the knee, feet flat on the mattress.
It tilted its head to the side, a smirk stretching its lips as the tight muscle clenched. Clearly unprepped and untouched. “Katsuki,” it called for him. The inventor peeled his eyes open, hazy confusion forming at the back of his throat until he looked down. The bot’s tongue lewdly hung out of its mouth, eyes locked on him in a predatory gaze. The doll dipped its head down leaving a hot stripe against Katsuki’s entrance. He jerked like he’d been punched in the gut, the sensation foreign to him. No one, not even himself, ever played with his ass before. Red irises trembled with excitement as he watched his invention push in as much as it could, nose buried beneath Katsuki’s balls as it sucked at the ring of muscle. “Am I taking your virginity, baby?” the bot cooed after it pulled away, licking at the string of saliva that connected its mouth to Katsuki’s hole. Katsuki’s lips clamped shut, a high whine ripping through his throat as his legs snapped around the bot’s head. “Now, now, let me pop that cherry.” It teased in a low timbre, pulling Katsuki’s thighs apart so it could continue to devour.
It pushed its flexed tongue into Katsuki’s hole, the stretch making Katsuki gasp, hips moving on their own volition now, grinding down onto his replica’s face. Strong hands wrapped around the engineer’s hips, pulling him in mirrored motions as the doll tongue-fucked his virgin hole. Katsuki’s vision was beginning to blur as tears brimmed, the pleasure so strange, but so addicting at the same time. A small whimper left his lips when it disappeared, his body maneuvered with ease so that his head hung off the bed, his legs pulled so his knees rested on his shoulders.
“Get my cock nice and ready like the good slut you are,” the doll instructed, guiding its throbbing cock to Katsuki’s lips, feeding it to him until it sat heavy in his mouth, the tip poking the inventor’s throat. Katsuki moaned wantonly as a thick, lubed finger breached his hole. The vibration of his moans made the cock twitch, reminding him to start sucking. He pulled his head towards the mattress as much as he could before pushing back, forcing the bot’s length further into his throat with each bob. He was suspended in pleasure, eyes crossing as his mouth began to stretch uncomfortably, the doll’s cock quickly filling him to the brim.
He distantly heard praises and obscene squelches, his creation beginning to fuck his face. He couldn’t quite tell which of his holes were being praised for their compliance over the din. The burning in his chest hoped it was both. The amount of fingers stretching him out went unknown. Katsuki caught up in hollowing his cheeks. Fighting hard to be good. All he knew was that he was being stretched to his limit and the bot was keeping an unrelenting pace against his prostate, his cock leaving a sticky mess on his chest. Katsuki’s thighs trembled, vision fading in and out as the doll hammered into his throat. He was close, so full, so well taken care of. Suddenly he was gulping around the thick cock, the bot pushing deep enough to restrict Katsuki’s breathing, fingers abusing the sensitive button in Katsuki’s ass. Burning heat cascaded down the programmer’s body as he shot hot ropes of white all over himself, orgasm hitting hard enough to impair his senses only leaving behind blinding pleasure.
When he came to, he was lying flat on his stomach. He couldn’t find it in himself to care about the mess soaking into the sheets when he was being massaged so nicely, his replica kneading the backs of his thighs, trailing up to squeeze his ass before pressing its thumbs into Katsuki’s lower back. “Made it down to earth yet?” the bot hummed, moving to straddle Katsuki’s legs, spreading a cheek to expose its maker’s winking hole. It nudged the head of its cock against Katsuki’s hole, pushing just enough for Katsuki to feel the stretch and pulling away just before it could pop in, waiting for an answer.
“Need you inside!” Katsuki croaked, lifting his hips off the mattress, hoping to breach his hole himself. A strong hand slammed his hips back down, choking on a moan at the stimulation of his cock rubbing against the bedding.
“Try again,” the bot scolded.
“Please…” Katsuki tried, panting softly as he stilled. “Take my virginity,” he whispered, face burning in an embarrassment that had his gut burning with need.
The sudden intrusion of the bot’s girth had his head snapping to the ceiling, a wail burning his throat. Pathetic moans spilled from his lips when the doll stilled, its length completely buried inside. Katsuki’s mind was spinning. It was so much, too hard to breathe. Was this what it felt like when he fucked someone?
The bot rolled its hips slowly, letting Katsuki adjust to the overwhelming feeling. Any and all thoughts disappeared. All he could focus on was how good it felt receiving. The way the bot gripped his hips was sure to leave a bruise tomorrow, so sturdy that none of Katsuki’s tremors could shake it off. Not the way his legs kicked as he begged for more or the scratches against its belly as Katsuki reached back, trying so desperately to pull the bot in closer, only able to graze the life-like skin with his fingertips.
He was slowly becoming addicted to the feeling. Maybe it was the way the doll kept him helpless, hands pressing down on his shoulder blades to push him into the mattress. Maybe it was the way the bot just seemed to do everything right. Torturously slowing its thrusts, pulling out inch by inch until just the head of its cock stretched him, tears streaming down Katsuki’s face as he begged for more, that it wasn’t enough. He needed all of it.
__
His newfound addiction could be considered a problem, if he gave the after effects more thought. It was hard to do so when he was sitting comfortably on the doll’s lap, its cock deep in his ass, twitching every so often as he typed away. Fixing bugs, adding codes. It was distracting at times, all he wanted to do was bounce. Fuck himself down onto his own cock, but he held back, rushing to finish the next update.
A wobbly smile twitched on his face. He should’ve felt ridiculous, embarrassed even. Especially with the number of stickers on his head, all connected together like a flimsy cap, its signals sent straight to the bot.
“I’m so excited, master,” it smiled down at him, sturdy arms planted on either side of Katsuki’s head. “You get to see how good you make me feel.” The wires taped to Katsuki’s head created a series of pathways back and forth between his body and the doll’s. Nerve signals transferred between them so that Katsuki could feel almost exactly what he felt like inside. “It’s so I can make it feel more accurate,” he told himself, trying to rationalize how weird this was becoming.
His pupils blew out at the first push of the robot’s cock into his warm hole, the heat and pressure exactly mimicked onto his dick. “What the fuck, what the fuck?!” Katsuki internally screamed. This was nothing like how the bot’s pussy felt. It was much hotter, so much softer, wetter. He wrapped his legs around the doll’s waist, pulling it close so its cock slammed in all at once. It felt like a punch to the gut, his senses consumed with no escape. The cock in his ass pressed incessantly against his prostate, his own cock twitching with the phantom squeezes of his walls. He looked down, almost unbelieving that there wasn’t anything wrapped around him. Strong spurts of white splashed against his face, eyes shutting tight as he babbled for his doll to keep going. He never wanted it to stop, even when it became so hard to breathe that he was only sucking in gasps or when tears spilled down his cheeks. He contracted into a ball of overstimulation, using every limb he had to keep the doll close, a hand sliding down to weakly push at its ass bringing it back from every pull.
Katsuki was on the brink of consciousness when he realized that he’d made his bot almost too obedient. It wouldn’t stop unless told so. With the last of his strength he whispered the trigger word, the bot’s thrusts gradually slowing to a stop, seating itself deep in Katsuki, cock flagging. A hum rumbled deep in Katsuki’s chest at the lewd squelch when the bot pulled out, fake cum dripping out of the engineer’s abused hole. He lay there in a state of bliss as the bot immediately went into aftercare mode, cleaning its master, gently sitting him up and pressing the rim of a glass to Katsuki’s lips so that he could rehydrate.
Ah, this was bad, wasn’t it? Katsuki could very well become addicted to this type of thing, what they shared. The bot perfectly curated to his needs.
Once he could stand on his own and stretch his sore muscles he felt his cock jump at attention. He had to try it, he needed to see what it was like, to use the bot’s special feature he’d been itching to activate.
“Can daddy play with your pussy, princess?” He suggested, tucking a finger under the bot’s chin, watching with a smile as the bot’s eyes softened, demeanor falling into one of complete submission. It splayed itself out so nicely for him, spreading its legs so Katsuki could have complete uninterrupted access to its cunt. Katsuki would spend a whole day between those legs if he could. Licking and sucking on its twitching clit, running soft thumbs up fat lips before slipping a finger in, free hand rubbing circles onto the delicate bud. The bot’s reactions were so natural. Rise and fall to climax seemingly authentic. Pure desperation left the bot's lips as Katsuki edged his toy. He looked down at it with dark eyes, reveling in its neediness. So consumed by the power that he couldn’t tell you how much time had passed, uncaring if it was five minutes or five days. He edged his creation until his cock was painfully hard and purple.
“Make a mess for daddy.” He whispered, watching the doll’s limbs twitch and kick as if in a panic, eyes widening before crossing as it was finally granted reprieve, the triggering phrase opening the floodgates, drenching Katsuki in hot squirts. Strong pulses left the bot’s urethra even after his assaults stopped. It was a sight to behold and Katsuki wanted to see it again and again. Maybe he’d stock up on his own cum and fill the reservoir. Rinse and repeat.
The possibilities were endless and by the end of each night, Katsuki couldn’t help but feel like a genius. Everything was perfect, almost scary. He could create everything he’d ever desired and he did. After letting himself and the bot recharge he worked tirelessly writing scripts for his endless fantasies. A dumb smile on his face as he reached for his eyedrops, lids drooping with sleep as he typed away.
He’d programmed the bot to have a much more detailed aftercare, ordering all his favorite snacks to sit organized atop his dresser. The doll was able to bring a sour gummy worm up to his lips as he lay boneless on the bed, all his energy spent on being a good boy and holding in his orgasm, his creation pumping a firm hand around his cock until it was sensitive and sticky with precum. Only allowing him to cum when tears freely flowed down the inventor’s cheeks, hiccups interrupting his pretty pleas for mercy.
Katsuki’s unsure of the last time he left his house, exactly. It may have been once in the middle of the night as he ran to the corner store for their largest bottle of lube while he waited for his bulk shipment to arrive. Most of his days and nights were consumed by sex. One whole day dedicated to Katsuki propped up in a beautiful table top position, tupperware under his cock as his doll diligently milked his prostate so that the next day it could fill him up until his belly distended. When he was satisfied with the amount of bruises painting his body he decided to slow down. Finding himself tangled in intimate positions with the bot, their lips locked, both moaning into each other’s mouths as they slowly worked themselves up to a strong orgasm.
Katsuki was quite surprised with how much stamina he actually had. Two weeks of sex-filled days made it physically impossible to get hard, his ass and nipples sore, throat raw and otherwise useless. He whispered a tender word of praise that had the doll sagging into heavy sleep where it sat in its designated charging cubby. Katsuki stepped back with a sigh, distantly wondering if he’d created a monster, if this would keep him from making deep human connections. He started weighing out the pros and cons, his cock twitching painfully in his boxers as a simple millisecond of the last two weeks flashed in his head, and, well. Why was he even thinking about it in the first place?