Work Text:
“Will you quit squirming so much?”
Xiao Zhan adjusts the goggles that rest on the bridge of his nose, squinting even though his classmates always tell him it doesn’t actually improve one’s vision. He forgot his magnifier on campus, but Yibo had been complaining about stiff joints for the past few days, so he really can’t put this off any longer.
Yibo picks at the wires sprouting from the back of his neck that connect him to Xiao Zhan’s computer, perched next to it on top of the desk. Xiao Zhan is hunched over Yibo’s knee, prodding around the intricate and delicate circuits to see if he can locate the issue.
“You left my nerve receptors on,” Yibo states.
“Because you hate it when I turn them off,” Xiao Zhan responds, his tweezers jostling against the epidermal plate when Yibo shifts again.
“It’s weird not being able to feel. I don’t like it.”
“Yeah, well, you weren’t always able to feel.” Xiao Zhan places his hand on Yibo’s thigh, the artificial skin soft and pliant, for a more direct means of keeping his leg still. “Remember your first few weeks? Only three of your five senses were operating normally, and I thought I was going to flunk out.”
“That was only two years, six months, and eighteen days ago. Of course I remember it,” Yibo huffs from above him. “I was barely functional at all—”
“Thanks.”
“—but you figured me out all by yourself. And now look at me.”
Xiao Zhan lifts his head to find Yibo smiling down at him. He’s leaning back with his palms on Xiao Zhan’s desk, his free leg swinging back and forth boredly.
Xiao Zhan has a hard time not looking at him. Yibo’s face is scientifically perfect, thanks to the donors at school. He’s got these beautiful lips and a cut jawline and fluffy hair that’s as soft as it looks. His eyes are expressive and alert, constantly taking in information and processing it at speeds that would leave a human brain fuming, literally and figuratively. When Yibo looks at Xiao Zhan, there’s something else in his eyes, and Xiao Zhan is certain he didn’t put it there.
“I’ve turned you into, what, a bot that asks too many questions and likes to make inappropriate jokes in class?” Xiao Zhan needles genially.
“No.” Yibo pouts, albeit briefly. “You’ve made me the most agile android in our whole class, maybe even the whole school. No one’s seen moves like mine.”
“Not anymore, unless I figure out what’s wrong in your legs here.” Xiao Zhan sinks back down into bad posture as he resumes his task of finding a needle in a haystack. Or in this case, inside a medial collateral ligament. “Here, why don’t we try this—” Xiao Zhan cups his hand under Yibo’s thigh and lifts it slightly off the desk, giving his knee almost full range of motion. “Glide your foot back and forth slowly, and I’ll find out if I can see anything chafing.”
“Sure, gege,” Yibo complies.
With the patellar plate open between the femur and tibia, Xiao Zhan can see the mechanics of Yibo’s hardware. The synovial joint allows the metal parts inside to move fluidly, and everything seems to be going smoothly (pun intended). Stumped, Xiao Zhan leans close and listens to the faint shh of Yibo’s artificial components. Therein lies the problem, or Xiao Zhan hopes it’s the only problem. Like the quiet purr of an electrical engine car, there shouldn’t be any chafing at all.
“Good,” Xiao Zhan says as he lowers Yibo’s leg back onto the desk.
“Good?” Yibo parrots, eyes following Xiao Zhan when he leans over to rummage through a duffel bag of supplies. “So I’m not going to spontaneously combust?”
“You were never going to combust,” Xiao Zhan huffs. He comes back up with a jar of lubricant. “Honestly, I thought I gave you a self-diagnostics program? You couldn’t have told me yourself the joints were just getting dry?”
“Xiao Zhan-gege knows me better than I know myself,” Yibo quips cheekily.
With a sigh, Xiao Zhan removes the jar’s lid and dips his first two fingers in the grease.
“We’re supposed to be making you smarter than humans, you know.”
While he’s gotten pretty quick at this, Yibo squirming doesn’t help keep it a particularly clean process. He gets grease smeared all over the inside of his thigh. But upon another close inspection, the lubricant did the trick. Xiao Zhan doesn’t hear the chafing anymore, so he closes up the epidermal plates over Yibo’s knee and seals away anything that looks otherwise inorganic.
There’s a box of tissues on the shelf behind his desk. Xiao Zhan plucks a few, cleaning off his hands first, and then wiping up Yibo’s skin as best as he can. It works well enough for now—Yibo will have to get the rest off in the shower by himself—until Xiao Zhan reaches his upper thigh, where Yibo’s boxers are rolled up all the way to the hip to allow him space to work. Xiao Zhan’s hand pauses near the crease at his hip.
Not that he was looking, but Yibo’s boxers are slightly tented at the front.
“Yibo.” Xiao Zhan exhales steadily through his nose, a slight warning in his tone. He pulls the goggles off, sets them aside. “When did you learn how to do that?”
“I was wondering when you were gonna notice,” Yibo states, sounding rather proud of himself. “I was sitting up here squirming the whole time you were touching me. Your hands are so gentle.”
“Okay, but—” Xiao Zhan cuts himself off and mentally backtracks. “I’m pretty sure I didn’t give you a functional dick? You shouldn’t know how to do that.”
“Didn’t you just say a second ago that we’re smarter than humans? There are a lot of things I can figure out on my own, especially when it comes to my own parts. Besides, this is completely involuntary and natural, as one human might say to another. You’re having this effect on me.”
Xiao Zhan looks up to meet Yibo’s face, and Yibo is already looking down at him with darkened eyes. Glossing over the mild shock of it, Yibo getting hard is actually kind of a miracle. You’d have to factor in sensory processing, emotional desire, physical attraction, and an acknowledgement of human procreation. None of those things should apply to Yibo, but judging by evidence alone, he’s taught himself all of them. Not to get too ahead here, but it might also indicate androids have a preference for gender.
“Am I grossing you out? Has my confession triggered an ‘awkward silence’?” Yibo asks, not sounding the least bit apologetic.
Xiao Zhan realizes he’s been quiet this whole time, mind running at a mile a minute trying to process all the new information at once. If only he had a brain like Yibo’s, he could compartmentalize and unpack everything later. But at least for now, he can prioritize what he wants to focus on, which he indicates with a pointed glance downwards.
“You know how to take care of it then, right?” Xiao Zhan asks. “Go take a shower and have fun with yourself.”
“Gege,” Yibo whines in complete exaggeration. His hand wraps around Xiao Zhan’s wrist, warm from his body’s thermal stabilizers, and tugs him closer. The wheels on Xiao Zhan’s chair squeak and roll until his stomach presses up against the lip of the desk, and he’s caught directly between Yibo’s legs. “You don’t want me to experience something this human all by myself, do you?”
Xiao Zhan’s face heats up, which is clinically ridiculous. Yibo doesn’t have the capacity to feel shame—not an insult, he’s just not wired to be embarrassed about anything, so Xiao Zhan should have nothing to be embarrassed about either. It’s not even his own body.
“I don’t even know how I would go about explaining it to you. It’s not like there’s a unit for this in our textbooks.” Xiao Zhan rests his hand on Yibo’s bare thigh, the fingers around his wrist still curled tight.
“You don’t have to explain anything to me. I already know how it all works,” Yibo says, catching Xiao Zhan a little off guard.
“What? How? Yibo, we’ve really gotta do something about these modifications you’re making to your data intake without letting me know first.”
“This time, it wasn’t on purpose,” Yibo defends. His thumb grazes over the bump in Xiao Zhan’s wrist. Where their skin touches, the temperature rises even more, and Xiao Zhan doesn’t know if it’s his body or Yibo’s doing it. “You were taking that really long test the other day. You left me home, and I was bored. I wanted to find games on your computer, but ended up finding something else.”
Xiao Zhan does a quick inventory of the things he knows are on his computer. Some games, sure. A lot of homework and research. Nothing incriminating like Yibo’s tone suggests.
“Your internet browser was open,” Yibo continues when Xiao Zhan doesn’t say anything. “So I went through your history.”
“Yibo!”
“So many videos of humans in the throes of procreation. Only they were all males, so they couldn’t have been procreating.”
Xiao Zhan doesn’t believe what he’s hearing. He has to be the only student at this university to have his android go rogue and snoop through all his secrets, all his gay porn. He’s going to get better at clearing his history on the regular, right after he establishes a stronger password.
“I watched a lot of it, you know,” Yibo says casually.
“You watched it?!”
“It was fascinating. The whole time, I thought ‘this is what gege likes,’ and I realized I fit the image.”
“I don’t know what you mean,” Xiao Zhan says cautiously. He’s almost too scared to hear what Yibo has psychoanalyzed about him based on the kind of porn he likes.
“A lot of them were younger men,” Yibo says, voice low. His free hand trails up Xiao Zhan’s other arm. “They were all so eager to please the older men, even as they were held down and writhing and moaning. They begged and begged for more. Called out for their geges. That word sounds so different in that context, doesn’t it? Gege. A few of them were English speakers. In those videos, the word was daddy.”
Xiao Zhan groans, the mortification reaching a peak when Yibo says the last word in English too.
So. They’ve gathered a few observations at this point. Xiao Zhan watches gay porn and has a preference for younger men. Yibo has just discovered the ability to develop an erection and explicitly stated he wants Xiao Zhan’s involvement in remedying the issue. A few conclusions can be drawn here.
“Fine, I’ll help you,” Xiao Zhan relents, having realized he’s put himself in a corner. Might as well get all the embarrassing out in one go. “But only if you promise not to root around in my stuff again.”
“You know I can’t promise that.” Yibo’s face breaks out into a bright smile. “My natural curiosity will always win out.”
“I should have known.” Xiao Zhan rolls his eyes, despite the fact that his heart hammers away in his chest in anticipation for what he’s about to do.
It’s fine. He’s done way more with guys—human guys—and it’s perfectly normal to help out a friend in need. Except he doesn’t know if it still applies in the same way when that friend is an android. His android.
“Fine,” he repeats, like he’s convincing himself. He places both hands on Yibo’s thighs, looking up at his face with what he hopes is a serious expression. “Porn is not a tool for education, so let me tell you now, the very first thing you have to do when initiating things with a partner is establish consent. All parties involved, of sound mind and body, must agree, got it?”
“Xiao Zhan-gege, I want to engage in relations of the sexual variety with you. Do you want to engage in relations of the sexual variety with me?” Yibo asks, quick to learn and eager as ever. Xiao Zhan hears a brief flash of Yibo saying how the men in those videos were eager to please.
“You don’t have to be that formal about it,” Xiao Zhan deadpans. If he weren’t about to start the strangest hookup of his life, he’d think it was cute. “But yes.”
“Just want to eliminate any room for doubt.” Yibo wiggles where he sits, legs shifting under Xiao Zhan’s hands. “Are we starting?”
“One last thing,” Xiao Zhan interjects. “If at any point you want to stop, you have to tell me, okay? And that goes both ways.”
“I understand consent, Zhan-gege,” Yibo huffs impatiently. He licks his lips, a habit he’s picked up from watching Xiao Zhan concentrate on something. Xiao Zhan watches the swipe of his tongue as it glides over his lips, so pink and wet and basically human.
“Alright, then I’ll start.”
Miraculously—or frighteningly—Yibo is still hard in his boxers even after that whole conversation. Xiao Zhan fits a hand over him, touching lightly through the thin fabric, and gives them both a moment to react. Yibo hardly does anything other than slightly press back against the touch.
Xiao Zhan rubs at him in a slow up and down motion, feeling the cock underneath his palm swell to full hardness. And, okay, Xiao Zhan has seen Yibo naked plenty of times from all the maintenance he needs and from fucking building him—not that androids care about nudity in the slightest, innate shamelssness and all. So Xiao Zhan shouldn’t be surprised by the size of him, but there’s just so much, filling his palm, distending his boxers.
“Tell me how it feels for you,” Xiao Zhan asks for purely scientific purposes. His fingers find the head of Yibo’s cock and rub along the ridge.
Above him, Yibo’s mouth falls open, and his eyebrows pinch together. “It feels like my processor is firing only at half capacity. It’s hard to… to concentrate on anything other than your hand.”
Xiao Zhan laughs, genuinely amused by the honest reaction. “That sounds about right.” His thumb presses into the very tip, circling around the small hole that’s there for anatomy’s sake only.
The gentle motion gets Yibo to jerk a little, his fingers going to grip the edge of the desk. His knees spread a little wider, hips pushing up by a fraction.
“Make that a quarter capacity.”
“Good.”
Peeling the waistband of Yibo’s boxers down, Xiao Zhan frees his cock and confirms that his android is one of the better endowed ones out there. Yibo lifts his ass off the desk enough for Xiao Zhan to tug the boxers down and toss them aside. When his hand goes back to Yibo’s cock, Xiao Zhan’s eyes stay glued to it in fascination.
The skin is soft just like his own. It moves with the up and down pull of Xiao Zhan’s palm, foreskin gliding over the tip and stretching back again. The tip isn’t red like Xiao Zhan’s gets when he’s hard, which he attributes to the fact that Yibo doesn’t have blood in his system, and is therefore unable to flush anywhere on his body. What exactly is making his dick hard, that will have to be researched on another occasion.
With his left hand wrapped around Yibo, Xiao Zhan starts to jerk him off at a pace he knows works well on himself. He watches as the muscles in Yibo’s legs tense up, his hands coming to grab at Xiao Zhan’s arms. A little moan escapes him, surprised and high, and it effectively becomes the best thing Xiao Zhan has ever heard.
“You’re not just making that sound because you know I like it, are you?” Xiao Zhan teases.
Yibo shakes his head, watching Xiao Zhan’s face with dark eyes. “It was an unauthorized reaction. Just like how I can’t seem to get my–my legs to stop shaking. Is it always like this?”
“Most of the time, yeah. The release of good chemicals at the height of climax reduces humans to a singular purpose.”
“Chasing that height?” Yibo guesses, hips jerking toward Xiao Zhan’s hand as if to illustrate the point.
“Exactly.” Xiao Zhan catches himself smiling. “But I don’t know why your body is chasing chemicals it’s never encountered before.”
His gaze flicks over to the wires still attaching Yibo to his desktop. The screen displays his vitals in a pale blue hue, and at a glance, all processes are operating normally. Maybe at an enhanced capacity. Reaching over with his free hand, Xiao Zhan taps the record button to document any fluctuations in his brain activity. That will be data for later, but for now—
“Gege,” Yibo gasps when Xiao Zhan thumbs around the head.
Yibo’s hands have made it to Xiao Zhan’s shoulders, his fingers digging into his shirt with enough strength to hurt.
“Is this still okay?” Xiao Zhan asks, his grip easing up by a fraction.
“There was another thing that kept happening in those videos I watched,” Yibo starts. His voice sounds a bit far away, not as clear as it usually does. He licks his lips again, and Xiao Zhan, like last time, is captivated by the sight. “Can you kiss me?”
Xiao Zhan finds himself nodding and standing from his chair not even a beat after the question is asked. He fits his hips between Yibo’s spread legs, coming to a height that Yibo has to tilt his head back to look at him. Xiao Zhan cups his face with his clean hand, runs his thumb over skin that is impossibly smooth, and seals their mouths together.
He speeds up the pace on Yibo’s cock, inhaling the loud moan that’s fed into his mouth. Yibo’s arms go around him, tug him closer even though there’s nowhere to go. Xiao Zhan is completely hard in his pants now. Just like in those videos, just like in his fantasies, Yibo writhes against him and makes his cock throb.
“Hang on,” Xiao Zhan says in a rush against Yibo’s mouth. “I need—” He fumbles one-handedly, trying to undo the button and zipper on his jeans within the tight space between them. He finally gets his cock free, and he lines up the shaft with Yibo’s to jerk them off together in one hand.
“Gege, your cock,” Yibo moans through their kiss. “I can feel it against mine. So warm. It’s all wet. It just twitched.”
“It gets wet when it’s getting ready to release.”
“Mmm,” Yibo hums, tilting his head to deepen the kiss and essentially cut off the rest of the conversation. His hands skim down Xiao Zhan’s back and find the hint of skin that peeks out between the bottom of his shirt and the top of his jeans, fingers delicate and curious.
Yibo’s legs squeeze around him, and he seems so eager to drink up Xiao Zhan’s rapidly weakening breaths. He’s panting, hot, and too in love with the feeling of Yibo’s mouth on his to concentrate on much else.
“How do you know when you’re close?” Yibo asks, hands trailing back up Xiao Zhan’s shirt.
“It feels tight in your abdomen, very concentrated right in your lower stomach. You might feel lightheaded,” Xiao Zhan explains, drawing on very present knowledge.
“I think I’m there,” Yibo whispers. His voice catches, and he draws his knees up a little higher.
Xiao Zhan adjusts his focus to Yibo’s cock only, speeding up the rhythm of his hand. He leans away enough to watch Yibo’s face, and he watches it happen in real time. Yibo’s expression cinches up, a moan falling from his mouth, eyes slipping closed. His nails dig into Xiao Zhan’s back, but it feels so good to be able to see Yibo come undone like this. His face is beautiful, betraying true passion, and the orgasm shocks through his body in what must be the most unique sensation he’s ever experienced.
He knows it’s over when Yibo relaxes, shoulders dropping back down. Between them, his cock starts to soften, and Xiao Zhan notes with little surprise that there’s no evidence anywhere. Makes for easy cleanup.
“That was it,” Yibo says, awed.
“Everything you wanted it to be?” Xiao Zhan asks with a slight smile.
“No wonder humans do this to each other ad nauseam,” Yibo laughs quietly.
“Well, it never gets old. It’s always that amazing.”
Xiao Zhan’s hand idly returns to his cock, still full and leaking from the tip. Yibo looks down to watch openly, eyes back to the brightness they always have.
“You’re close,” Yibo murmurs, fingers coming to spread the moisture around the tip.
“Yeah,” Xiao Zhan breathes. “Do you want to take over?”
“I want to kiss you again.” And Yibo does, planting a quick peck on his mouth. He reaches behind his head and unplugs the wires that tether him to the computer. “But more than that, I want to keep trying those things I saw.”
Before Xiao Zhan can ask what things he means, Yibo nudges him away and slides off the desk. He sinks easily to his knees in front of Xiao Zhan, one hand wrapped around him. Yibo looks up at him and grins, seemingly something out of a porno, and lazily drags his hand back and forth.
“There were a lot of these videos too,” he says as preamble to tipping forward and drawing Xiao Zhan’s cock toward his mouth.
“Yibo, you don’t have to—” Xiao Zhan tries, but the head is already slipping past Yibo’s plush lips. He takes in a breath, pushing a hand into Yibo’s soft hair. His mouth feels like a human’s, warm and wet, tongue gliding under his shaft like he’s already an expert in this. Xiao Zhan can’t last long like this.
He can’t help the instinct to thrust his hips forward, but he tries to be as gentle about it as possible. Yibo takes him deeper and deeper, until Xiao Zhan is almost surprised by how much, but then he remembers Yibo doesn’t have a gag reflex. There’s just the pillowy heat of his mouth and his can-do attitude when he starts to suck.
Xiao Zhan moans, his grip in Yibo’s hair tightening. He doesn’t even manage a warning before he tips suddenly and desperately over the edge. All he can do is hold Yibo’s head in place as he groans through the release that washes over him, filling Yibo’s mouth. Yibo, probably for Xiao Zhan’s benefit, moans softly in response until Xiao Zhan has nothing left to give him.
When his heavy breathing calms, Xiao Zhan pries his fingers out of Yibo’s hair and draws his hips back. A mess follows his cock as it leaves Yibo’s mouth, strings of white covering the head and dripping down Yibo’s chin.
“Yibo?” Xiao Zhan asks, somewhat guilty for literally unloading all of that on him without warning him first.
Yibo looks up from his spot on his knees and sticks his tongue out, mouth open. A pool of come sits in his mouth, and well, isn’t that a sight to store away for a rainy day?
Xiao Zhan blinks, unsure why it looks like Yibo is waiting for something, until it clicks that he can’t swallow. He doesn’t have an esophagus.
“Oh shit!” Xiao Zhan scrambles for the trash bin next to his desk and drags it over to where Yibo is still kneeling on the floor. “Spit it out, spit it out.”
Yibo empties everything from his mouth into the bin, Xiao Zhan sitting next to him and guiltily rubbing his back. When it’s more or less cleaned up, Yibo sits back on his heels and wipes his mouth with the back of his hand.
“Sorry about that,” Xiao Zhan mutters.
Yibo squints at him and smiles. “I saw the way you looked at me. You liked it.”
“I—” Xiao Zhan starts, ready to defend himself, but he’s already revealed so much about himself to Yibo today that it doesn’t matter. Instead, he sighs and smiles back. “Yeah. That was really hot.”
He stands to put away the bin and other things they’ve knocked askew. Yibo follows him like a puppy, perching against the desk.
“The lubrication worked, by the way. In my knee,” Yibo says. He leans down to pat the joint, looking so bizarre and so cute in just his shirt and nothing to cover him on the bottom.
Xiao Zhan answers with a light laugh through his nose.
“I think the other one could use some too.”
“It’s a fleshlight.”
“No, it’s so much more than that.”
“It’s a glorified fleshlight.”
Yibo stops waving the thing around and sits down on the edge of the bed with a huff. He turns the contraption over and over in his hands. It’s an opaque white tube with a type of flexible silicone inside and a small opening that’s the same size and shape as a standard male reproductive organ—which makes it, for all intents and purposes, a fleshlight.
“Regular fleshlights are one-way receptacles for pleasure,” Yibo argues. “This one will be two-way.”
Xiao Zhan can’t help but roll his eyes, back turned to Yibo as he folds laundry. Ever since they started—“having sex” would be the wrong term, but “hooking up” feels too impersonal for what they’ve got going on between them—exploring each other’s bodies, Yibo has turned into this kind of sex fiend. All the porn he watches doesn’t help. But Yibo keeps pestering Xiao Zhan to fuck him, despite it being physically impossible, and Xiao Zhan is at his wits’ end trying to avoid exactly this solution Yibo has come up with.
“But I don’t know if I could make it two-way,” Xiao Zhan groans. “Your sensory processors are complicated enough already, and trying to piece together a part that isn’t school-issued would be damn near impossible for me to figure out on my own.”
“Come on, you’ve done it before,” Yibo prods.
Xiao Zhan has run out of socks to mis-match, so he turns around and leans against the dresser, facing Yibo. “Your dick doesn’t count. I still have no idea how you can pull off getting a boner—”
“Ha.”
“—and have the nerve endings firing like they’re human.”
“Then let me help you. Two brains are better than one, especially if one of those brains is mine.” Yibo sticks two fingers into the fleshlight and waves it naggingly at Xiao Zhan’s face.
“Your humility is astounding,” Xiao Zhan says, despite the grin tugging at his lips.
Yibo picks up on his sarcasm and shrugs. “You could fuck some actual humility into me, if you really wanted to.”
Xiao Zhan stares long and hard at the silicone tube around Yibo’s fingers. The worst that could happen is that it doesn’t work, right? Actually, the worst that could happen is Xiao Zhan’s professors finding out he’s trying to equip is android with a sex toy, but that’s like, only marginally possible.
“You’re the most insatiable robot I’ve ever known.”
“Derogatory term, gege.”
Xiao Zhan presses his index finger and thumb against his eyelids and lets out a laborious sigh. “Strip and get on the bed. I’ll go grab my tool bag.”
The glee on Yibo’s face is abundant as he practically leaps off the bed and tears his shirt off. Xiao Zhan fetches his things from the workroom and doesn’t fixate on what he’s attempting to do. It’s Yibo’s idea, anway; Xiao Zhan is just providing assistance.
When he gets back to the bedroom, Yibo is completely bare, laying on his stomach with his arms folded under his head. Xiao Zhan pauses in the doorway, taking in the smooth dips and curves of Yibo’s figure, not a flaw in sight. He’s never going to say it out loud, but Xiao Zhan has a particular fondness of running his hands over Yibo’s skin and marveling at how human and soft he is. Each day with Yibo is a discovery of seismic proportions, and he can’t even write about any of his revelations in his monthly class reports.
Yibo throws a glance back at him and smiles languidly, wiggling in his spot like a peacock with his feathers on display. Xiao Zhan hates that he falls for it, crossing the short distance and placing his bag on the bed so his hands are free to reverently trace up the backs of Yibo’s thighs.
His thumbs press into the swell of Yibo’s ass and pry the cheeks apart. He’s just examining, he tells himself. Surveying the land, if you will. There’s a small pucker of skin exactly where Xiao Zhan expects to find one, though it’s just for correctness’ sake and serves no other function. Underneath the surface are a few systems like a moisture reserve and a balance sensor. Yibo is built with everything that’s necessary to keep him functioning at one hundred percent capacity, and Xiao Zhan doesn’t want to think about the mental puzzles he’ll have to solve to fit this god damn fleshlight somewhere.
“Admiring?” Yibo asks.
Yes.
“Thinking,” Xiao Zhan says. Not much else to do but take a look under the hood, so he grabs Yibo’s interfacing tool and unlatches the section of skin where his tailbone would be.
It’s funny in an absurd way how Yibo’s ass folds open on both sides like window shutters. Beneath the plates of pale skin is a network of dark blue and black wires, circuit boards, coolants, et cetera. The argument could be made that the artificial mechanics of an android are absolutely more complicated than even a human body, with all their cells and vessels and tissues.
Sighing, Xiao Zhan holds the fleshlight over the opening and tries to imagine a way to make it fit. He could shift the moisture recycler to the side and rearrange the tubing so it’s less in the way, and that would solve one of two problems. The other hurdle would be to miraculously give Yibo the ability to feel it.
“Need help?” Yibo asks when Xiao Zhan doesn’t move for an extended moment.
“What I need…” Xiao Zhan hums. “Is for you to come up with another name for this thing besides fleshlight. It’s weird calling it that when it’s going to become a part of you.”
“Aww, does Xiao Zhan-gege think of me as more than a toy?” Yibo teases.
“Hey, this was your idea.” Xiao Zhan swipes the back of his wrist over his forehead and rummages for something he can use on the moisture recycler.
“It was, and I think it’s sweet of you to want me to have an anatomically correct term for the toy.” Yibo closes his eyes and hums. “How about rectum? Sphincter? Anus?”
“Oh my god,” Xiao Zhan laughs, trying not to shake his hands too much as he unscrews the small metal compartment. It comes loose, and he reattaches it to the side, which opens up just a little bit of space. He still needs to get the tubing out of the way. “Let’s just call it your ass.”
“If that’s what gets you going.” Yibo falls silent for a minute, letting Xiao Zhan tinker away. After a moment, he lifts up on his arms and twists his head to look, though he can’t see much at this angle. “Hey, what are you working on?”
“Well, I’m trying to get your moisture recycler out of the way,” Xiao Zhan answers. When Yibo doesn’t say anything to that, Xiao Zhan adds, “It’s the thing that puts artificial saliva in your mouth. The water-based lubricant that keeps your tongue—”
“Could you connect another tube to my ass?”
“What the hell would I do that for?” Xiao Zhan sends him an incredulous look, his hands stilling.
“Think about it, gege,” Yibo says.
“You’re gonna have to explain it to me.” Xiao Zhan shakes his head.
“There’s a term for it online. ‘Self-lubricating asshole’, if I remember correctly.”
Despite himself, Xiao Zhan blushes. He shouldn’t be surprised Yibo has already gotten himself into that genre of porn, but hearing him say it and subsequently picturing it in his head is doing something for Xiao Zhan that he’d rather not admit.
“I can’t believe some of the things you say out loud,” Xiao Zhan exhales with a shake of his head, but he goes ahead and attaches a second wire anyway. It’s more convenient this way.
Yibo is blissfully—or suspiciously—quiet while Xiao Zhan continues to work with what he’s got. After a short while, he gets the toy to fit snugly and securely, ensuring it won’t go rattling around inside Yibo while he’s dancing or engages in… other vigorous activities. For the sake of being delicate, Xiao Zhan seals the end of the toy to Yibo’s entrance in a way that’s almost seamless.
Xiao Zhan is in his element when he works on Yibo, the time passing quickly without his notice or care. A crease forms between his brows when he attaches the sensory processors—one at the very top of the toy and one along the shaft, mimicking what Xiao Zhan internally jokes would be Yibo’s prostate.
“...Okay,” Xiao Zhan says finally, after spending a minute just staring at his work and trying to find anything wrong with his configuration. “I think that might be it?”
“Test me out?” Yibo suggests.
Xiao Zhan chews on his lip, sending a glance up to Yibo’s face. Only one way to prove a hypothesis; Xiao Zhan just wishes it wouldn’t seem so lewd to prod a finger at Yibo’s newly modified hole. The gentle poking garners no reaction that he can see, so he unceremoniously slides the finger in.
“Anything?” Xiao Zhan asks.
“I don’t have pain receptors, remember? Don’t be shy,” Yibo says, wiggling his hips back against Xiao Zhan’s hand.
Xiao Zhan grumbles a comment about being stuck with such a bossy android, but he shoves a second finger into the dry silicone and pushes both as deep as he can get.
“Try the lube,” Xiao Zhan says.
With Yibo opened up, Xiao Zhan is at liberty to watch the tiny valve on the moisture recycler tick open, and he hears a faint whirring as the device pumps lube into Yibo’s ass. He feels it seconds later, coating his fingers and the walls of Yibo’s ass. He tries to be professional about it, but his mind goes places without his permission. Perhaps subconsciously, he spreads his fingers apart.
“I don’t feel anything,” Yibo states, and Xiao Zhan groans.
Leaning over awkwardly to get his ionizer, Xiao Zhan uses his free hand to tamper with the endings of the sensory processors. He fears the silicone might be too thick to pick up on internal stimulation, or that it’s simply not compatible with Yibo’s more sophisticated materials, but he does what he can. Still, he’s two fingers deep inside Yibo, and regardless if Yibo can feel it, Xiao Zhan very much likes the wet sensation around his digits.
“Why don’t you tell me how you miraculously unlocked the ability to feel pleasure in your dick, and we can apply the same magic here,” Xiao Zhan gripes, tightening the screws as if that will solve anything.
“It wasn’t magic, gege. It was the result of careful meditation and self-reflection to get the nerve endings aligned with—ahh…!”
Yibo’s whole body jolts, his joints locking up. Xiao Zhan freezes where he is, one hand hovering over the opening in Yibo’s back, the other still shoved halfway up his ass.
“What is it?” Xiao Zhan asks, worried Yibo is hurt even though it’s largely improbable.
Yibo groans and shifts, pushing his elbows underneath himself to lift slightly off the bed.
“That’s it,” he says, voice wobbling gently.
Oh. Xiao Zhan carefully adjusts his fingers to rub along the walls, and a fresh wash of lube coats his fingers and—oh.
Yibo moans, rising up on his knees to push his hips back against Xiao Zhan’s hand.
“Wow,” he breathes. “Wow, gege. You did it.”
“Okay,” Xiao Zhan says, only because he doesn’t really know what else to say at the moment. He slowly drags his fingers in and out, watching as Yibo clumsily tries to meet him each time. “Here, hold still for a second.”
Xiao Zhan removes his fingers, earning him a whine from Yibo, but he needs both hands to close him up properly. The sections of his epidermal plates join and seal themselves back together, the line where they meet virtually invisible. With his ass in the air, Xiao Zhan can see where Yibo’s lube leaks out of him, shiny and wet around the rim.
All this time, Yibo begging Xiao Zhan to give him something to fuck, Xiao Zhan never imagined it would be as hot as it is now that he can. He gets hard in his jeans in no time. He’s glad Yibo is always horny, because he really, really wants to go for it now.
“Put it back in,” Yibo orders, petulant.
“How did you manage it?” Xiao Zhan asks, awe lacing the edge of his voice. He slips both fingers back in, hearing the sigh of relief from Yibo as soon as he does. His free hand rests on Yibo’s lower back.
“You’re the one who hooked it up,” Yibo retorts, though he sounds far away, back to rocking against Xiao Zhan’s hand like he’s programmed to.
“I can open a path for information to pass back and forth, but I can’t tell your brain how to interpret that information,” Xiao Zhan says with a small smile tugging at his lips. “That’s all you, babe.”
Yibo’s response is another groan, and Xiao Zhan catches himself laughing. In his personal notes, he’d written down ‘can be fucked stupid’ in regards to Yibo’s body shutting down higher brain functions when they get intimate. From a scientific standpoint, it’s fascinating. From a human standpoint, Xiao Zhan finds it sweet. He’s been learning just how human Yibo can be, and every day with him is a surprise.
Testing the limits, Xiao Zhan adds a third finger and relishes in Yibo’s gasp. Yibo fists the sheets where his head hangs between his shoulders, spreading his knees just a little more. Xiao Zhan notes that he’s gotten hard too, and fuck, it’s going so perfectly.
“Want me to fuck you?” Xiao Zhan asks, even though he knows what Yibo’s response will be.
“Don’t even ask,” Yibo nearly growls. He lifts his head to throw a glare over his shoulder, hair mussed and lips parted. God, Xiao Zhan wants to kiss him.
“Here,” Xiao Zhan coos, slowly dragging his fingers out. “Lay on your back for me.”
Yibo’s legs kick out behind him as he flops onto his back, maneuvering more like a newborn deer than a finely tuned machine. When he sprawls out on his back, his cock rests across his lower abdomen, hard and full. If he were human, there would be precome smearing across his smooth skin. Xiao Zhan briefly entertains the idea of connecting a third moisture tube to his dick so he can experience a wet orgasm.
“Thinking about more modifications?”
Yibo’s low voice pulls him from his thoughts. Xiao Zhan blinks back into focus and finds Yibo’s large hand wrapped around his cock, stroking lazily.
“How could you tell?” Xiao Zhan asks, glancing up at Yibo’s face.
“You’ve got that look,” Yibo explains. “Your eyes get really focused.”
Xiao Zhan laughs through his nose despite himself, and he leans over Yibo to nudge their mouths together.
“Well, I am focused on you right now,” he promises against Yibo’s lips before kissing him properly.
Yibo does his favorite thing and wraps his legs around Xiao Zhan’s hips. They’ve done it like this a few times before, with Xiao Zhan grinding down on him, slow and sensual, like they were actually fucking. They can have the real thing now, provided Xiao Zhan hasn’t made a critical error in how tight he installed the screws.
As excited as he is to try it out, he’s reluctant to pull away from Yibo’s arms so he can get situated. When Xiao Zhan props himself up on his hands, Yibo spreads his legs. He takes a moment to just look at Yibo—looks at the way he wets his lips in anticipation, looks at how his hand leaves his cock so he can impatiently tug at Xiao Zhan’s jeans, looks at the way Yibo looks at him. Xiao Zhan doesn’t think androids are supposed to look at humans like that, but the feeling that washes over him when Yibo does is too powerful to name.
“Okay, okay…” Xiao Zhan yields to the puppy-dog eyes and playfully bats Yibo’s hands away so he can get himself undressed. Yibo seems content to just get Xiao Zhan’s cock in him, but Xiao Zhan takes his time to remove all of his clothes, bares himself as completely as Yibo. It’s an effort and a half to get it done with Yibo’s legs still wrapped around him, but when everything is out of the way, Xiao Zhan reaches between them.
Yibo gasps again when Xiao Zhan’s two fingers slip into him, just checking to make sure he’s really there and really wet. Xiao Zhan vaguely contemplates the necessity of “prep” if Yibo’s entrance isn’t a muscle that needs to be stretched, and Yibo is an entity that can’t feel pain at all anyway.
But Xiao Zhan likes the way Yibo feels around his fingers, and he loves the face Yibo pulls when he thrusts them into him. The sensation must still be new enough that Yibo hasn’t grown accustomed. If only there was a program Xiao Zhan could write that could have Yibo clinging to this newness no matter how many times they go at it…
Shaking his head against the thought, Xiao Zhan retracts his fingers and uses his wet hand to stroke his cock. Once he gets the tip inside just far enough that he won’t slip out, Xiao Zhan spends the rest of the slide watching Yibo’s face, watching the wonder that spreads over his features as he’s filled.
“Remember what I told you about asking me to stop at any time?” Xiao Zhan asks, though his voice sounds tight. The slippery, snug feeling around his cock is already getting to him.
“Of course I remember,” Yibo breathes, almost sounding like a scoff if he could manage to be bratty at the moment. “I would never tell you to stop, is the thing.”
“You know,” Xiao Zhan puffs out, “sometimes I wonder if you truly comprehend the things you say.”
A smile starts to tug at Yibo’s mouth, but then the action is aborted when Xiao Zhan pulls back and thrusts back in. They both relinquish a moan, Yibo’s lips parting as his eyebrows draw up in the center. The look in his eyes is far off, and not for the first time, Xiao Zhan wonders how it feels for Yibo, if it’s anything close to the coil of pleasure in his stomach whenever they do this.
Yibo’s body jolts on the mattress with each thrust. He throws one hand back to grasp at the sheets near his head, while the other tugs intermittently at his cock. Xiao Zhan realizes, a few minutes into this, that Yibo keeps leaking the more turned on he is. The squelch between their bodies is difficult to ignore, and Xiao Zhan’s cheeks and ears feel hot with blush when he can’t deny that he likes it.
“Talk to me,” Xiao Zhan pants after establishing a good rhythm for them and letting Yibo get used to it. “How does it feel?”
Yibo takes a second to gather his thoughts, or summon his voice, and he licks his lips. His eyes struggle to come back into focus, but when he manages to look at Xiao Zhan, his gaze is dark.
“Clinically?” he asks. “It feels solid. Good engineering. I don’t think you’ll be able to rattle me loose with how tightly you—”
Xiao Zhan doesn’t feel sorry for interrupting him with a hard thrust. Yibo’s thighs flex around his waist, strong and solid. Yibo’s fingers untangle themselves from the sheet so he can clap his hand over his mouth. Trying not to smirk, Xiao Zhan eases up a bit and traces his fingertips up the outside of Yibo’s thigh.
“It feels good,” Yibo says, bitten off by his own fingers. “Feels so full in a place that I’ve never even registered before.”
“That’s because it didn’t exist until a few minutes ago,” Xiao Zhan points out.
“You know what I mean.” Yibo’s comeback is weak, much like the moan he gives when Xiao Zhan changes up his angle to see if there’s a difference.
There’s definitely something, because Yibo’s hand falls away from his mouth and searches blindly for Xiao Zhan’s arm. He holds his wrist tightly, nails biting into his skin, and Xiao Zhan recognizes the signs.
Xiao Zhan must be getting close too, because he feels heat radiating out from between his hips, head dizzy with it. It’s so hot inside Yibo, the cradle of his body so inviting that Xiao Zhan never wants to leave. He’s panting slightly with the effort of keeping their rhythm steady, and it takes him a belated moment to realize the heat around his dick isn’t just in his head.
“Yibo, fuck—” Xiao Zhan tries to organize his thoughts, and he slows down, meaning to pull out. Yibo feels too warm for an android, and Xiao Zhan is struck with the fear that he’s caused some sort of malfunction.
But Yibo steadfastly holds Xiao Zhan against him with his legs, refusing to let go.
“No,” he says, whining like Xiao Zhan is denying him something he’s entitled to.
“You’re too warm,” Xiao Zhan says in a rush. “I think there’s something wrong with the coolants—”
“It’s not the coolants,” Yibo interrupts.
Xiao Zhan’s movements have ceased, and Yibo pushes himself up on his elbows, looking like it’s a chore. With the stillness, Xiao Zhan can feel the heat in Yibo’s body. Combined with the tight, pillowy fit and the slick Yibo is still producing, he feels so human.
“I’m making it happen,” Yibo explains, though Xiao Zhan’s brain needs some time to catch up. “I’m making that part of my body hot. For you.”
“You…” Xiao Zhan can’t quite parse what that means, partly because there’s basically no blood left in his brain, mostly because it should be impossible. “Are you sure?”
“I’m sure, gege.”
Yibo reaches up and presses his palm to Xiao Zhan’s cheek. Even though his own heated skin, he can tell Yibo’s hand is a normal, not-about-to-explode temperature. He leans into the touch, watching Yibo’s face as he feels a smile spread over his lips.
“Your surprises are going to kill me one of these days,” he breathes, pressing a kiss to the inside of Yibo’s wrist.
“Does that mean it feels good?” Yibo asks.
Xiao Zhan rocks back and eases forward again, enjoying the heat and the pull of Yibo’s body against his cock.
“Yeah…” he promises. “It feels so good.”
“Then get back to it.” Yibo flops onto his back again, hair parting around his forehead. He’s not sweating, not panting, not flushed—because he can’t—but there’s still something about him that looks thoroughly debauched. A small burst of pride settles in Xiao Zhan’s chest. “You’re really good with your dick.”
“Thanks,” Xiao Zhan wheezes.
He hooks his hands around Yibo’s hips and readjusts them, leaning down and over him so they can be nose to nose. Yibo’s arms come up around Xiao Zhan’s neck, and he smiles smugly until Xiao Zhan kisses it off of him.
When he starts up again, it’s impossible not to notice the heat now that he knows Yibo is in control of it, altering his body to be human, to be Xiao Zhan’s. Yibo’s nails scratch at the back of his neck, fingers sliding into his hair and messing it up. Xiao Zhan can’t help but moan, the sound muffled against Yibo’s plush lips. He’s gotten so good at kissing; it’s almost better than the sex, having his mouth on Yibo’s.
“Xiao Zhan-gege…” Yibo mouths against him. His voice ticks up at the end, the tell-tale plea of just his name that signals Yibo is close.
Xiao Zhan presses himself closer because he loves to feel it when Yibo’s orgasm shakes through him. He wedges a hand between their bodies to get him there, fingers dragging up and down Yibo’s cock until Yibo goes still. The only evidence of his climax, as usual, is the low, desperate groan that works its way out through his voice box.
Xiao Zhan keeps his hand on his dick as he speeds up his own movements, almost frantic to find pleasure and fill Yibo up with his come. His breathing is harsh, but Yibo tolerates it with gentle kisses and soft gasps when Xiao Zhan’s touch edges on this side of too sensitive. He buries himself inside just before orgasm washes over him and his entire body goes rigid. He doesn’t remember squeezing his eyes shut, and he feels his own sweaty face pressed against Yibo’s neck until the rushing in his ears subsides.
His dick is soaked when he pulls out. He’s almost too afraid to look down, but horny curiosity always wins out, and he finds a mess on his cock and between Yibo’s legs and spilling onto the sheet. It’s hot in a gross way, or gross in a hot way, and Xiao Zhan makes a mental note to lay out a towel next time they do this.
Yibo’s legs, as if made of noodles and not the strongest and most malleable materials modern science has come up with, flop onto the bed. A lazy smile stretches over Yibo’s face, and he looks the picture of satisfaction with his hair sticking out in every direction over the pillow.
“Everything you ever wanted and more?” Xiao Zhan guesses. Despite the mess, he slides up to lie next to Yibo and kisses his bare shoulder.
“Mm, maybe this was a bad idea, gege. I’m properly addicted to sex now.” Yibo drags a hand through his unruly hair and smushes his cheek against the pillow, looking at Xiao Zhan.
“Guess I’m gonna have to deactivate you and ask for a new model,” Xiao Zhan teases, and he deserves the smack to his arm.
He can only sit in his own sweat for so long, and eventually Xiao Zhan drags himself out of bed with a protesting android in tow.
“Bath time, you nymphomaniac,” he says, coaxing Yibo to the bathroom.
“Didn’t your class handbook say something about us androids learning our personalities from our creators?” Yibo makes a show of tapping his chin in curiosity, but the spark in his eyes is as bright as ever.