Circuits Overheating

AN: 9S is a very innocent but curious android, all for the sake of discovery and to serve humanity.

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Scanner model 9S crouched amidst the ruins of what once was possibly a shopping district, her gloved hands carefully examining a set of gear wheels she'd discovered beneath a pile of rubble. Her black YoRHa uniform, with its distinctive shorts and thigh-high boots, had collected a fine layer of dust and dirt during her excursion.

"These don't show signs of decay," she murmured to herself, turning the metal pieces over in her palm. "Perfect for Mr. Ethan's project!"

She placed the gear wheels into the bag that her Pod was carrying, the floating rectangular companion hovering dutifully at her side. Despite YoRHa's strict prohibition on emotions, 9S couldn't help the wide smile that formed beneath her visor as she thought about their mission.

An actual human survivor!

The very notion still sent strange pulses racing through her circuits and body. After all, wasn't this what all androids had been created for? To serve humanity until they could reclaim Earth from the machine lifeforms?

"Pod, scan for additional components with similar shape," 9S instructed, her long white hair swaying as she moved deeper into the ruins and growing wild vegetation to find more parts.

"AFFIRMATIVE: SCANNING," Pod 153 responded in its mechanical voice. "ANALYSIS: ADDITIONAL COMPONENTS LOCATED APPROXIMATELY 15 METERS NORTHEAST."

"Great! Let's go check it out," she replied with undisguised enthusiasm.

As 9S eagerly followed Pod's directions, she couldn't help but reflect on how drastically her existence had changed in just over a month. Being assigned alongside 2B to protect Ethan had been the ultimate honor—one she never imagined possible, not even in her wildest data simulations.

It turned out humanity had two programs running simultaneously to save their species from extinction. While most believed all humans had escaped to the Moon, others had implemented different methods. Ethan was proof of the latter—a genuine human who had been preserved in a cryo pod that was about to fail before YoRHa discovered him.

"Oh come on," 9S huffed, picking through more scrap and locating another gear which she discarded after a quick scan. "This one's corroded beyond repair. Not good enough for Ethan's standards."

Now the Resistance camp had transformed into a veritable fortress with a secure safehouse at its center. Resources flooded in from YoRHa Command and other forces, all directed toward protecting this precious remnant of their creators' species.

The arrangement had worked well so far—2B, being a battle model, remained at the safehouse guarding Ethan, and there were a few more teams scattered in the surrounding outskirts secretly keeping watch, while he worked on various engineering projects. Meanwhile, 9S ventured out daily to salvage parts and materials, tasks for which her scanner capabilities were ideally suited. Devola and Popola also left for salvaging missions, far more dangerous than hers, but that stopped a week after the creator's arrival.

‘I wish I could spend more time with him’, she thought, feeling that strange flutter in her chest that had become increasingly common. ‘There's so much I want to ask him about the old world... about humanity. Did they really spend so much time creating entertainment when their lifespans were so limited? It's fascinating!’

Pushing aside another big piece of rubble, she collected a few more undamaged components. 9S took a moment to straighten up and stretched her arms above her head, finding a strange pleasant feeling all over her body. "Ah! That feels nice... No wonder Ethan does these stretches every morning after waking up."

"NOTIFICATION: SCHEDULED COLLECTION TASKS COMPLETED WITH 43% TIME EFFICIENCY IMPROVEMENT," Pod 153 announced.

"What? Really?" 9S's head snapped toward her flying companion. "Let me see that list!"

The Pod projected a holographic display showing the day's objectives, each item marked as complete much to her surprise. The list looked as long as the other past ones, but then she realized that yes, she indeed found everything on that list because she was lucky enough that everything needed was close to each other, meaning that she didn't have to spend time traveling and venturing into different zones or even biomes.

"We're done already!" 9S couldn't keep the excitement from her voice. "That means we can head back early! Maybe Ethan will have time to explain more about those 'video games' he mentioned yesterday!"

A surge of something she might have classified as happiness—if emotions weren't forbidden—coursed through her. Extra time meant more opportunities to observe Ethan, to learn from him, to understand what made humans so special that androids had fought and died for thousands of years to preserve them. And learn new things—oh, she LOVED to learn new things.

"Pod, let's return to the safehouse immediately," she declared, already turning in the direction of the camp-turned-fortress.

"AFFIRMATIVE. THIS POD SUGGESTS UTILIZING THE PREVIOUSLY MAPPED ROUTE FOR OPTIMAL EFFICIENCY."

"No need," 9S replied, picking up her pace. "I know a shortcut. We can cut through the commercial district ruins and save at least two minutes!"

She navigated through the ruins of the city with ease, running and jumping across the debris and crumbling buildings and avoiding the weird peaceful machine forms. Obviously she and all the androids wanted to eliminate the strange machines in the vicinity, but Mr. Ethan didn't want to as it would inadvertently send a warning or a sign to the hostile machines, and he found them interesting objects of study.

"I still don't get why he wants to preserve these machines," she muttered to her Pod as she sidestepped a small stubby unit that was picking flowers. "But I guess humans see value in things we don't understand yet. That's what makes them so... fascinating."

So those strange behaving machine lifeforms were left alone begrudgingly, her mind racing with a new list of questions forming which she wanted to ask Ethan. Perhaps today she might learn more about human culture, or maybe he'd explain another concept from the old world that her databanks lacked information on. She just needed to know.

Last week, he'd spent an entire evening explaining something called "movies and movie theaters" to her and 2B, describing in detail how humans once gathered in darkened rooms to watch fictional stories projected onto large screens. The concept had fascinated 9S, who couldn't quite grasp why beings with such short lifespans would dedicate hours to experiencing events that never actually happened.

"Maybe it's like a simulation for them? A way to gather experiential data without risk?" she had asked.

Ethan had laughed—a sound that still made her processors work overtime to analyze—and explained that it was more about emotion and entertainment than data collection.

As the fortified walls of the Resistance camp came into view, 9S increased her speed as she couldn't hold back her growing excitement. The camp had changed dramatically in the weeks since Ethan's arrival. What had once been a scattered collection of tents and makeshift defenses was now a proper fortress.

She approached the reinforced main gate, now flanked by two heavy automated turrets and four alert guards instead of the usual two distracted ones. The guards nodded respectfully as she passed—a small gesture that still felt strange. Before Ethan, she had been just another YoRHa unit. Now, as one of his personal guards, even the Resistance fighters treated her with newfound respect.

"Welcome back, 9S," one of the guards called out. "Finished early today?"

"Got lucky with the salvage," she replied cheerfully. "Is Anemone around?"

"In the command center with the supply team."

9S nodded and proceeded into the transformed camp. The differences were striking—the paths had been properly paved, the structures reinforced with actual metal and concrete instead of scavenged materials. YoRHa supply drops had become regular, bringing in resources that the Resistance hadn't seen in decades.

She passed by the weapons vendor, who was now organizing an impressive array of factory-new armaments rather than his usual cobbled-together offerings. Nearby, the maintenance area had expanded to include actual repair bays with proper diagnostic equipment. Several androids who had been barely functional for years were now fully restored, working alongside newcomers sent from other Resistance outposts to bolster their numbers.

Most striking was the morale. Androids who had once moved with weary resignation now walked with purpose. Conversations were animated, occasionally punctuated with something 9S hadn't heard in the camp before: laughter.

All because of one human.

9S navigated through the bustling central plaza, where Anemone had established a proper command center inside what used to be just another tent. Now it was a sturdy building with communication equipment and tactical displays. Through the open door, she could see Anemone herself directing a team of supply officers, her usual stern expression replaced with focused determination.

Moving past the main area, 9S approached the southeastern corner of the camp, where the entrance to the underground safehouse was located. What had once been a simple hatch covered by a tarp was now a reinforced bunker entrance with a security checkpoint. The structure had been designed to blend into the surrounding architecture, but 9S's scanner eyes easily identified the camouflaged defensive systems and surveillance equipment hidden throughout the approach.

"9S to checkpoint," she announced as she neared the entrance. "Returning from salvage operation."

The security scanner hummed as it verified her black box signal. A green light flashed, and the first set of heavy doors slid open. She stepped into the decontamination chamber—Ethan's idea, to prevent bringing in any potential biological contaminants that might affect him—and waited as a fine mist of disinfectant covered her.

Once cleared, she descended the reinforced stairwell that led to the actual safehouse. The underground facility had been expanded considerably, from what was once a small emergency shelter to a proper living and working space. The main corridor was well-lit with proper electricity rather than the emergency lighting they'd had before. Branching off were several rooms: Ethan's private quarters, a fully-equipped workshop, a small medical bay designed specifically for human physiology, and the command center where they coordinated security.

Unlike most days when she'd return to find 2B standing guard outside the workshop while Ethan worked indoors, today the entrance appeared unattended.

‘That's weird,’ she thought, scanning the area for her partner. 2B never leaves her post. Did something happen? Or maybe...

"Pod, run a security scan of the safehouse. Is 2B's black box signal present?"

"AFFIRMATIVE. BLACK BOX SIGNAL FOR UNIT 2B DETECTED IN THE COMMON AREA. BLACK BOX SIGNAL FOR HUMAN DESIGNATE 'ETHAN' ALSO PRESENT."

9S felt immediate relief wash over her systems. "Ooooh, they must be having a break together! Come on, Pod, let's go see what they're up to!"

She hurried down the corridor, curiosity and excitement overriding her usual protocol of reporting in first. After all, protocol seemed less important than getting to spend extra time with (possibly) the last human on Earth.

That was a relief. If 2B was inside, then everything must be secure. Still, it was unlike the stoic battle model to abandon her post for a break.

9S approached the reinforced door of the safehouse, expecting it to slide open automatically at her proximity as it normally did. Instead, it remained sealed.

"That's odd," she murmured, placing her palm against the access panel. "Pod, why isn't—"

Her question was interrupted by a sound from within—a strange, unfamiliar noise that made her pause. It was 2B's voice, but... different. Not the cool, controlled tone that 9S had grown accustomed to, but something higher-pitched and almost... breathless?

"Ah! E-Ethan... there..."

9S froze, her hand still hovering over the access panel. Was 2B in distress? No—her vocal patterns didn't register as pain or alarm. Then what was—

Another sound followed, one that 9S couldn't immediately categorize. Something between a moan and a gasp.

"Like that... yes..."

A strange warmth flooded 9S's systems, centering particularly around her face and chest. Her artificial heart—designed to circulate cooling fluid through her android body—began beating faster for no discernible reason.

"Pod," she whispered, although she wasn't sure why she was lowering her voice, "what's happening in there?"

"ANALYSIS: INSUFFICIENT DATA. THIS POD RECOMMENDS DIRECT INVESTIGATION."

9S hesitated, her hand still poised over the access panel. The logical part of her programming told her to enter—her duty was to report to Ethan and deliver the materials she'd collected. But something else, something she couldn't quite identify, held her back.

"More... please..." 2B's voice again, but somehow... vulnerable? 9S had never heard her partner make sounds like that before.

But the strange fluttering in her chest intensified. What was this sort of curiosity? Or was it something else entirely?

She shook her head, dismissing those strange thoughts. Nines was just worried about 2B. 

"Pod, I'm going in," she announced. "Standby for—"

Another unfamiliar noise echoed from within, this time louder and more distinct. It was a strange 'plap plap' sound followed by her voice taking a higher pitch.

"Ethan...! Yes!"

2B's voice was so unlike her normal professional tone that it felt jarring. Her partner was always calm, cool, collected, even when fighting enemies on the front lines. But this....

That was the moment when curiosity won over her initial doubts. She needed to know what was happening there and so she opened the door, manually inputting the codes.

With a quiet beep, the door slid open with a surprising lack of noise.

9S stepped inside the common area, bracing herself for the strange situation ahead. Instead, her eyes widened at the spectacle before her, and her entire body froze, as the circuits struggled with a sudden influx of unfamiliar data unfolding before her.

It was 2B, her usual combat uniform nowhere to be seen, her flawless body totally exposed as she was pinned against one of the stark metal walls of the safehouse. 2B's legs were spread wide, her face pressed firmly against the cool surface, and her arms were held behind her back, her wrists restrained by Ethan's grip. Ethan, equally bare, his muscular body glistening with a thin sheen of sweat in the harsh artificial light.

"What?" 9S blurted out, the warmth that had begun to spread through her synthetic body intensifying, pulsating through her core, as her processors struggled to interpret the new data flooding in, a futile attempt to make sense of the inexplicable. She approached the duo without even realizing she was moving her legs, her visor locked onto the pair, unable to comprehend why Ethan was moving his hips so strongly against her partner.

The rhythm was harsh and insistent.

He thrusted forward, his muscular rear clenching tightly each time, and his body slammed into 2B's, the force of it causing brief ripples on 2B synthetic flesh, mostly where they were connected. The room was filled with the sound of their bodies meeting and parting.

"I—I don't understand," 9S stammered in a whisper, the words tumbling from her lips unbidden, but neither of the two heard her. They were lost in their own world, one that 9S could not begin to comprehend but still wanted to join, for some strange reason.

"Like that..." 2B moaned. She was pinned, helpless, and Ethan's grip on her wrists tightened as he held her there, his body slamming into hers. "It's... deep... ah!" Her vocalizations were rough, guttural, completely new sounds.

"You're tightening up again," Ethan grunted, his voice a low growl that seemed to resonate within 9S's core, sending a wave of inexplicable heat coursing through her.

She stood rooted to the spot, mouth agape, as Ethan's movements quickened. His hips thrust forward, meeting 2B's with a sharp, rhythmic 'plap, plap' that echoed through the room. With each thrust, 2B's voice escaped her in fragmented, alien tones.

That was the moment when 9S eyes drifted downwards, drawn to the point where Ethan's body joined with her partner. Sweat glistened on their skin, but there was another fluid, something milky white, leaking from where they were connected. It wasn't the stark red of 2B's system red fluids, but seemed to be coming from Ethan instead—specifically, from the hard, thick length of flesh that jutted from his body and was sliding in and out of 2B.

The sight made her blink once. 

Since when did 2B have that... that soft opening? And why hadn't she or Pod mentioned it?

She wasn’t mad of course, she was just confused.

Then, a memory resurfaced: a quick upgrade they'd undergone just before their deployment to Earth surface. That must have been when 2B was altered. But what exactly were they doing that caused her to make such… enthralling expressions?

9S was oblivious again, but her feet were already shuffling towards the pair, her mind a whirlwind of inputs as her body kept moving without her direct command, practically being next to them. 

Their creator increased his pace, his breaths coming in ragged gasps, while 2B's moans escalated, echoing off the cold walls, now taking a desperate and pleading tone.

"Ethan... ah... please..." 2B's voice was thick, her words slurred together in a breathless rush.

Ethan's response was a dominant growl, his hands pulling the android wrists, dragging her closer to him. 

"I'm close..." he grunted, almost like trying to whisper those words.

However, 9S tilted her head, brows furrowed in confusion. She didn't comprehend the meaning of 'close', better said that wasn;t the right usage of the verb close either. But her circuits hummed with another unfamiliar sensation, a curious warmth spreading through her lower body that caused her to be unable to look away. She was a mere meter away from them now, her eyes wide, taking in every raw, unfiltered detail, from their creator's powerful thrusts to 2B's body undulating in rhythm.

Even catching a strong mix of smell that weren’t unpleasant but brought new developments in her.

2B threw her head back, pressing her breasts harder against the unyielding wall and Ethan released her wrists, his large hands gripping her waist instead, pulling her in for a strange hug against him.

"Ah! Yes!" 2B screamed. "More...!"

At that moment, 9S caught a glimpse of 2B's face, previously hidden by a cascade of white hair. The usually stoic battle model, the one who always maintained professionalism and protocol, who constantly reminded 9S to suppress emotions, was now a picture of raw, unbridled feeling and emotions. 2B's lips were half-parted, a thin trail of saliva glistening on her chin, her cheeks flushed a deep pink, a hue 9S had never seen on her before. Her eyes were half-lidded, but the new emotion was evident, her side gaze locked onto the human with an unmistakable mix of adoration and trust.

And she was breathtakingly beautiful to look at, an ethereal vision that seemed to sear itself into the very circuits of 9S's being. The warmth within her surged, transforming into a blazing inferno that tightened her chest and ignited a feverish heat in her lower body. Her breaths came in rapid, shallow gasps as her processors fought desperately to handle the torrent of emotions inundating her system. 

What were these foreign sensations? Why did her core thunder so violently? This overwhelming longing, this raw yearning, made her fingers twitch with the compulsion to reach out and touch them, to somehow connect with them. To join them.

How could such a chaotic, unrestrained scene be so profoundly beautiful?

"I'm gonna cum!" Ethan gasped, his voice a desperate plea as his hips drove forward with a frenzied urgency.

So 9S quickly tore off her visor, as to catch everything with her eyes without any sort of obstruction.

"Do it!" 2B commanded, her voice laced with an unexpected fervor. "Cum inside me, please! Fill me up like you always do!"

With a strangled groan, Ethan went deep inside her partner one final time, his fingers clutching her synthetic flesh with a grip that spoke of primal need as shudders wracked his body.

"Ohhh..." 2B moaned, her voice saturated with a deep, resonant satisfaction. "It's so warm..."

Their creator collapsed against her, pinning her firmly between his trembling form and the wall. Only seconds later his lips found her neck, bestowing it with tender, reverent kisses.

"That was incredible…" he murmured, his voice a breathless whisper of awe.

"Yes..." 2B exhaled, her hands reaching back to rest on his hips with a gentle possessiveness. "Thank you."

"No, thank YOU," he replied, capturing her chin and guiding her towards him.

2B accepted the new gesture, allowing Ethan to possess her lips with his own. They lingered in that embrace, 2B's fingers trailing through his hair and across his hips with a tender reverence. When they finally parted, their eyes locked in a shared smile that spoke volumes.

While Nines’ mouth hanged open in surprise at seeing the kiss unfold in front of her.

But in that fleeting moment, 9S's gaze met 2B's, a silent connection that lasted a heartbeat but those milliseconds were more than enough for the android to fully acknowledge her presence.

"NINES?!" 2B exclaimed, her voice a sharp intake of shock as her hands flew to shield her exposed chest, her face a vibrant shade of crimson as she moved away from the human.

Ethan's head jerked up, his own cheeks flushed with embarrassment as he registered 9S's arrival.

"Uh... hey there," he stammered, a sheepish grin tugging at his lips. "Guess you're back early."

"Yeah, uh..." 9S swallowed hard, her voice a mere whisper as she scrambled for words. "I finished early. Found everything on the list you gave me, sir."

"Ah. Cool… cool." he replied, his voice trailing off as an uncomfortable silence settled between them. The air felt thick, as if time itself had slowed down, each second stretching like an eternity. Both of them shifted awkwardly, unsure of how to break the tension. 

Finally, 9S cleared her throat, a sound that seemed to cut through the quiet like a knife, and decided to speak.

"What were you guys doing?" she asked, her eyes wide with genuine curiosity. "When I was walking, it seemed like you were hurting 2B at first. But then she started acting... different. And you two were making sounds I've never heard before. I didn't even know 2B could make noises like that."

“NINES!”

"Oh, um... yeah," Ethan stammered, his cheeks flushing a tone of pink. "Sorry about that. It's... it's kinda hard to explain..."

"Try me!" 9S insisted, her tone eager and insistent. "I'm a scanner model. Explaining things is kind of my specialty!"

"It's a... well, sex." he replied."It's just something humans do."

9S blinked, her own cheeks warming up as she considered his words. "Sex? What's that?"

"It's uh... well..." He hesitated, glancing away as if to find the right words floating in the air. "It's an activity to feel good. With someone else you trust."

9S tilted her head, her expression reminiscent of an innocent child discovering something new and fascinating. "Feel good? How?"

"Uhhhh..." Ethan trailed off, nervously rubbing the back of his neck with his hand. "Well... like this."

He reached down awkwardly and gestured towards his now flaccid member, very different from moments ago. It was strange but it also had very interesting, not wanting to look away from it.

"It's soft now," she observed, her gaze curious and intent. "Is that normal?"

"Yeah," he chuckled, a hint of relief in his voice. "That happens after sex."

"I see..." she murmured, her mind processing the new information for later use.

"So anyway," he continued, trying to steer the conversation, "it gets hard when you're turned on."

"Turned on?" 9S repeated, her brow furrowing as she tried to understand, maybe like a switch flip? "Like when you're fighting machines?"

"Well, sorta. But more like..." He paused, searching for the next words. "Like when you want to be close to someone."

Her eyes widened with a newfound understanding, her lips parting slightly in surprise. "Close? Like how?"

He shrugged. "Just... close. You know? Like touching and stuff."

"Oh..." Her voice softened, the gears in her mind turning as she absorbed the concept. "And you do that with 2B?"

"Sometimes," he admitted, a small, shy smile playing on his lips as he glanced at the android in question. However, she just looked away.

9S bit her lip, her eyes fixed on his flaccid member as if it held the secrets of the universe. Her internal systems buzzed with activity, her processors running at full tilt. This conversation stirred something unfamiliar within her circuits, a nagging sense of incompletion. "I don't understand," she murmured, her voice barely above a whisper as she shook her head slightly. "How does it work?"

Ethan glanced at 2B again, who was attempting to conceal her chest with her arms, her posture a mix of vulnerability and defiance. "It's uh..." he stammered, his gaze darting between them. "Well, when two people are attracted to each other, there's this pull to be close. One thing leads to another, and before you know it, you're having sex."

"Is that what you did just now?" 9S asked, her curiosity intensifying with each passing second. "Were you attracted to 2B?"

His cheeks darkened to a deeper shade of crimson. "Yeah. I mean, yeah, we were attracted to each other."

"I see," she whispered, piecing together the puzzle. "So that's why 2B sounded different. She was feeling good, right?"

"NINES!" 2B's voice cut through the room, a mix of embarrassment and exasperation.

Ethan nodded, his expression a mixture of awkwardness and understanding. "Right."

"Wow..." 9S breathed, absorbing this new layer of understanding. A wave of jealousy washed over her—why had no one ever shared this knowledge with her before? Why hadn't 2B ever mentioned it?

"So, uh..." Ethan began, his nervousness palpable as he glanced between 2B and 9S. "I guess we should probably get cleaned up now."

"No!" 9S blurted out, her own urgency catching her by surprise. "I... I want to see more."

"Huh?" Ethan blinked, confusion etched across his face.

"Please," she implored, stepping closer with determination. "I want to learn about sex."

Ethan hesitated, caught off guard by her sudden request. He glanced at 2B, who had covered her mouth with her hand, her gaze averted. Her face remained flushed, her hair tousled, but another emotion flickered there—embarrassment? Shame?

But eventually she nodded, that seemed to be all the confirmation to proceed.

"Let me demonstrate then." he finally said, his voice low and serious. "But you must agree to follow my instructions. Understood?"

She nodded vigorously, her eyes wide with anticipation. "I promise! We androids were created to serve humanity after all."

"Alright, come stand beside me."

She moved quickly, eagerly taking her place by his side. He gently took her hand, his fingers warm and firm around hers and then carefully removed her glove before he guided it toward his now-soft member.

"Now, wrap your hand around it," he instructed, his voice calm and patient.

"Oh..." She let out a soft gasp as her fingers curled around it, feeling its substantial weight and warmth in her palm. "It's so... substantial. And warm. Very warm… why does it feel pleasant?"

"That's perfectly normal," he reassured her. "Just keep holding it like that while I explain what to do next."

She kept her gaze fixed on the large member, her breaths coming in short, nervous bursts. "What should I do now?"

"Begin by moving your hand up and down, like this," he explained, guiding her hand slowly along the length. "See? It feels quite pleasant for me."

"Wow..." She watched her own hand move along his length, her voice barely above a whisper. "It's growing..."

"Yes, that's a natural response," he said, his voice steady despite the growing heat in his groin.

She looked up at him, her eyes wide with curiosity. "Is this what happens when you're feeling good?"

"Not always," he admitted. "Sometimes it can happen much faster, depending on the level of arousal."

"Oh..." She glanced up at him, her cheeks flushing pink. "Are you... aroused now?"

He chuckled softly, stealing a glance at 2B before looking back at 9S. "Yeah, you could say that."

"Why are you looking at 2B?" she asked, noticing his gaze drift towards her partner.

"No particular reason," he lied, turning his focus back to 9S. "Just keep doing what you're doing."

She nodded, her fingers continuing their steady rhythm up and down his shaft. She marveled at the sensation—his skin so soft and smooth against the synthetic skin of her hand, yet firm and solid underneath, and the heat. She'd no idea a body could generate so much heat.

It burned good on her palm.

"What comes next?" she asked, her voice barely above a whisper as she let go.

"Well... I could tell you, but it's better if I show you." He rubbed the back of his neck, his gaze flicking to 2B again. "Come over here, 2B."

2B hesitated at first, her face still flushed, but after a moment, she complied. She moved forward slowly until she was standing on 9S's other side, then slowly sank to her knees. 9S mirrored her actions, her breath hitching as she watched 2B grasp Ethan's now-hard length with both hands.

"W-What are you doing?" 9S gasped, her eyes wide as she watched 2B's hands begin to move, her fingers tracing the ridges of his meat rod.

"Demonstrating," Ethan replied, his voice tight with anticipation.

2B looked up at him briefly, her eyes heavy-lidded, before focusing her gaze back on it. She began to stroke it again, her movements slow and deliberate, her fingers gliding smoothly up and down his shaft. There was a reverence in her actions, her eyes never leaving his member as she worked her hands over it.

"Ah..." Ethan gasped softly, his hips twitching slightly as he enjoyed the sensation. "Yeah, just like that."

"Wow..." 9S whispered, her eyes wide as she watched 2B's hands move over their creator. "She's really skilled at that!"

"Oh, she's skilled at more than just that," Ethan said, a proud smile playing on his lips.

Before 9S could ask what else 2B could do, 2B leaned forward, her lips parting wide. She took the head of that large member into her mouth, her lips wrapping around it completely. Ethan let out a soft moan, his hips jerking slightly as 2B began to suck, her cheeks hollowing out with the effort.

9S gasped  as she watched her partner rhythmically move her head, her lips sliding forward and backward along Ethan's rigid length. The human made pleased grunts that echoed through the room, his fingers tangling in 2B's white hair as he controlled the pace. "Fuck... You're so good at this..."

2B's response was immediate; she increased her speed, her cheeks hollowing more with each vigorous suck. The room filled with the wet sounds of her mouth and the occasional slurp as she pulled away, her tongue flicking across what must be a sensitive tip. Nines could tell it was sensitive because Ethan's breath hitched, his body tensing as he panted, "Damn... You're gonna make me cum if you keep that up!"

2B paused, her lips still wrapped around him, and looked up through her lashes. There was a wicked glint in her eyes, a smirk playing at the corners of her mouth. Then, with renewed vigor, she plunged down, taking his entire length into her throat, Nines could even see a bulge forming on her partner's throat as drool slid from her mouth . Ethan groaned in satisfaction as she held him deep, her nose pressed against his pelvis.

Suddenly, 2B pulled away, her hand wrapping around his slick shaft. "Not yet," she said, her voice low and stern. "I want Nines to taste you first."

9S looked between them, her core now pounding with a mix of confusion and anticipation. "Taste...?" she echoed.

"Yeah, I think it's time we showed you how to suck a cock." Ethan placed his hand on 2B's shoulder, "don't you?"

9S nodded eagerly, her eyes locked onto Ethan's glistening length. "Yes... Please teach me." Ethan nodded and 9S licked her lips and leaned forward. Her tongue tentatively flicked against his tip, her eyes darting up to gauge his reaction.

Ethan shivered, a soft groan escaping his lips. "That's it," he encouraged, his voice gentle yet firm. "You're doing great, 9S."

Emboldened by the praise, 9S licked him again, her tongue exploring his length with slow, deliberate strokes, trying to imitate what her partner did earlier. She coated his shaft with her saliva, her mouth following the path her tongue had taken. 

And it made her swell with joy when she could hear the satisfied grunts from her creator.

So she took it one step further and captured the head between her lips before Nines began to bob her head, her lips wrapped tightly around him. She mimicked 2B's earlier movements, taking him deeper with each descent. His big hands found their way to her head, his fingers tangling in her hair as he guided her, as his thumb caressed her. Leaning into that nice touch 9S's eyes fluttered closed, her senses focused on the feeling of him against her tongue, the sound of his groans, the taste of his arousal.

And she came to quickly realize that she loved that new taste, better than food even.

Ethan's breath hitched, feeling his body go tense. "Ah... fuck!" 

9S paused, her eyes opening and looking up at him, uncertain if that was a a good thing or bad.

"Keep going," And he gently pushed her down.

9S instantly obeyed, increasing the speed of her movement. She took him deeper, her tongue sliding along his shaft, teasing his tip each time she pulled away. Since she understood the importance of the tongue to play with a sensitive tip.

Ethan's body tensed again, his breath coming in short, sharp gasps. "Fuck...!" 

Suddenly, his fingers threaded through her hair, gripping tightly and he pushed his hips forward, forcing his member deep into her mouth. Her eyes flashed with shock as he filled her throat, her hands instinctively moved to try to push them away but a pair of hands quickly grabbed her arms and held her.

"9S!" It was 2B who was holding her back. "Be careful!"

However she couldn't even process that warning before something hot and thick hit her tongue, a strange, new bitter-sweet taste flooding her mouth. It was endless, spilling into her until she thought she might choke despite being incapable of such a thing.

Finally, his grip loosened, and he pulled away, slipping from her mouth with a wet popping sound and leaving a sticky white trail that hung on her lips. Only then her partner released her hands so she could use her sleeve to wipe off the excess.

"Wow...That was... incredible. I've never... felt anything like that before." She finally commended, feeling content with the new experience.

Meanwhile, Ethan was breathless, his chest rising and falling rapidly as he used the wall as support. "Yeah," he agreed. "Me neither."

But then a pair of arms wrapped around Nines, making her blush and go still. "So? Did you enjoy it?"

It was 2B, of course it was her.

Nines nodded eagerly as she looked at their human. "Yes! I loved it! I want to do it again!"

He chuckled softly, doing a strange gesture with his hand. "Maybe later, or we will end up skipping an entire day of work. For now, why don't you two get cleaned up?"

2B broke away from the hug, much to Nines disappointment but a short lived one as she saw her partner, extending a hand to her. "Come on. Let's go."

9S took 2B's hand, her fingers wrapping around her partner's and let herself be pulled up, following 2B into the small side room they occasionally used as a resting place. 2B’s uniform pieces were strewn across the small cot.

Nines paused at the doorway, looking back at Ethan. "Wait, what about you?"

He offered her a reassuring smile that made her core throb. "I'll go take a shower. I just need a little time to recover first."

She tilted her head, her brow furrowing. "Recover from what?"

He chuckled, shaking his head. "Nevermind. Just go ahead and get changed."

"Okay!" 

She was eager, her body humming with anticipation of learning more about sex from Ethan and 2B.

However, what she never imagined was that the second they closed the door, 2B suddenly jumped her and hold her head with a firm grip and before she could protest she was silenced by a kiss.

On the lips.

2B was kissing her.

2B’s tongue was touching every nook and cranny inside her used mouth.

It was obvious that her processor could no longer handle it and forced a reset.

And everything went dark.