The Story of an Android Who Longs to Become a Sexdroid

Author: Tana

Oh, you don’t have to worry about the combat element

　

A giant bipedal robot and a female android were walking through a deserted city at night.

At first glance, the female android’s silhouette, with its rounded breasts and the curve from its waist to its hips, suggested a well-proportioned human form. Yet its appearance was distinctly inhuman.

She wore no clothing, had no breasts or genitals, and lacked a mouth.

Her skin was a complex combination of hard black carbon composite material and a purple, rubber-like elastic material used for the moving parts. Even her human-like eyes, upon closer inspection, were artificial lenses.

A wireless connection links the massive robot to the female android.

Apparently, this giant bipedal robot is manned.

　

“Kate, third floor. Drive it out.”

“Affirmative, Master.”

　

After receiving instructions from a man called Master inside a giant bipedal robot, the android called Kate began running toward the building ahead.

Kate’s feet never made contact with the ground, she literally glided across the surface as she moved.

Though she appeared to have the delicate silhouette of a woman, her stride was terrifyingly long, it might be more accurate to say that she is leaping rather than running.

As she sprinted straight toward the building, closing to within a single stride’s distance, she shifted the direction of her leap from two dimensions to three.

Kicking off the ground and ignoring gravity’s pull, she reached the third-floor window, at least seven meters high, without losing momentum.

Kate paid no heed to the approaching glass and smashed the window face-first into the room. There, cramped into the floor of an ordinary building with a ceiling that couldn’t be called particularly high, was a creature.

The creature had no skin.

The muscle fibers moving its massive body were exposed. It bent its neck, its cheek pressed against the ceiling.

Its eyes, the size of a human torso, darted wildly. Rough breaths were expelled through the gaps between its exposed teeth, sending dust swirling into the air with each exhalation.

Human bones were scattered around the creature, and bits of flesh were stuck between its teeth.

Apparently, this creature devoured humans.

　

“Hostile contact detected. Initiating eviction protocol.”

　

The creature swung its thick, red hand, sending a heavy desk flying. It scraped the ceiling as it hurtled toward Kate.

Kate lunged forward, lowering her body to dodge the incoming desk, but that wasn’t enough.

She lowered her body further, spreading her legs wide to get as close to the ground as possible.

With her legs splayed wide, grazing the ground, Kate spun forward, coasting on inertia as she slid along the floor.

She twisted her body in midair and slipped under the extended arm that had thrown the desk. She grabbed the massive sword mounted on her back and, using the momentum of her spin, swung it at the creature’s arm.

Landing within the creature’s embrace, Kate pressed the horizontal edge of the blade against her own back. Rotating her body as if pushing the sword with her back, she slashed at the monster’s belly from a distance too close for it to extend its arms.

The sword that had come into contact with this creature’s belly was completely unsharpened, dull beyond belief.

However, the sword, powered by electricity from Kate, crackled and glowed as it sliced clean through the monster’s belly, staining Kate’s black and purple body red.

On the contrary, the floor itself split open. Kate’s blade, nearly as tall as she was, seemed to have sliced through the creature’s arm along with the floorboards.

The creature, its belly gaping open, let out a scream of agony loud enough to shatter the building’s glass. It swung its massive arm, trying to sweep Kate away, but she had already leapt backward to evade it.

Another heavy desk flew toward Kate, but she kicked it away with her high-heeled feet, sending it flying.

Seeing this, the creature dragged its head along the floor, turned its back on Kate, and began crawling frantically toward the window. Although this cramped space seemed comfortable for the creature, it apparently judged it to be disadvantageous for combat.

Kate did not pursue the fleeing creature. Instead, she quietly established a communication link with her master.

　

“Eviction complete.”

“Well done.”

　

The creature smashed through the window and flew out of the building, crashing through the asphalt as it landed on the ground.

Standing up, the creature measured about 6 meters tall. While humanoid in shape, it was overall stocky and squat, with a long torso and short legs. Its limbs were incredibly thick, and aside from the lack of skin, its build resembled a stuffed animal.

Its regenerative abilities were already sealing the wounds on its severed arm and split abdomen.

　

The creature was called Calamity(Saijin).

　

It was a race that devoured humans, its true nature unknown and incapable of communication.

The Calamity(Saijin) rotated its eyelid-less eyes to survey the area, spotting a figure roughly its own size standing a short distance away.

Standing 6 meters tall on two legs like the creature, the figure was humanoid with hydraulic cylinders fitted to its legs and hips.

Its surface was covered in black-painted metal. Its entire body was composed of straight lines, housing a manned bipedal robot that combined flexible movement via artificial muscles and hydraulic cylinders with immense power.

Its long, human-like limbs enabled hand-to-hand combat against the creature’s powerful physique and were designed to counter the creature’s surprise attacks, which were common in the confined spaces of buildings.

Mounted on its left shoulder is a simple firearm with a rectangular barrel and a hole at the tip. It uses 7.62x39mm ammunition—the same rounds used by human assault rifles.

Despite its massive frame, the assault rifle is sufficiently lightweight. While lacking in firepower, its extended mounted arm allows for all-directional firing, making it highly effective against smaller Calamities.

And the main weapon—a Gatling gun with seven barrels arranged in a circular cluster mounted on its right shoulder—fired 30×173mm shells at a rate of 4,000 rounds per minute. These shells possessed enough destructive power to pierce tanks, easily shredding the creature’s thick, resilient muscle fibers.

The Gatling gun had already begun rotating, and shells were fired along with the muzzle flash.

With a delayed boom, the creature’s freshly sealed wounds on its torso were ripped open, expelling its entrails and tearing off its remaining arms. Its teeth—capable of crushing iron—shattered into fragments.

The high-velocity barrage of massive shells, impossible for humans to wield, easily outpaced the creature’s formidable regenerative abilities. Even if it managed to dodge the hail of bullets and close in, this anti-monster combat weapon could subdue it in close-quarters combat with its highly maneuverable limbs.

　

Yaegashi Heavy Industries Model: Anti-Calamity Humanoid Walking Tank: Thunderclap(Jinrai).

And it was a combat android that drove the creature—which disliked sunlight and preferred confined spaces—out into the open where the Thunderclap could operate.

Yaegashi Heavy Industries Model: Machine Person Series, Moon Flower(Tsukihana). Her master calls her “Kate”.

　

Like the Thunderclap, her body utilizes artificial muscles that give her superhuman strength far beyond that of humans. The bio-computer mounted in her head has high computational power, enabling her to learn and think indistinguishably from a human—the ultimate combat android.

　

In this world, where man-eating creatures, known as “Calamity(Saijin)“, lurk within human society, the countermeasure is a team consisting of a human piloting a walking tank and a combat android. This is the absolute minimum optimal solution devised to combat the creatures.

　

　

　

　

　

One day, Master positioned himself over an unfamiliar android unit, exerting maximum effort to press his pelvic region against the android’s posterior section.

That android unit differs from my configuration: it possesses soft dermal covering, humanoid pigmentation, likely indistinguishable from organic humans by visual inspection.

Unsuitable for combat operations, inefficient for labor tasks, my specifications surpass it in all performance metrics.

However, that android unit is equipped with apertures.

In the oral cavity region, in the gluteal region, and in the genital region.

That android unit replicates human morphology completely, including apertures absent in my design.

Master’s pelvic oscillations accelerated.

Respiration rate elevated, cardiac output increased.

Impact sound: Thud! Thud! Thud! Thud! Thud! Thud!

An auditory disturbance of high irritation level persists in rhythmic pattern.

Then, a singular high-amplitude impact—bachin—resonates through the enclosure, after which Master ceases motion while maintaining pressure against the android’s posterior. Correction: precisely, he maintains forceful compression while exhibiting tremor.

This activity triggers unexplained query in my processing core; I recalibrate sensors from optical mode to electromagnetic wave mode.

Result: Master’s organic structure becomes translucent, revealing the android’s internal framework.

Master’s reproductive organ has achieved deep insertion into the android unit, emitting unidentified substance from distal end.

Identity of substance: unknown.

However, my power core ignites, full-body synthetic musculature activates, transitioning from standby protocol to combat protocol.

Error detected: combat protocol switch uncommanded, yet energy output escalation cannot be halted.

Query: what is the identity of that android unit? What operation was in progress? I must initiate inquiry.

　

　

　

I engage in self-interrogation subroutine while processing a specific visual data stream.

Query: why am I incapable of fulfilling Master’s requirements?

Response: my manipulators, chassis, and facial assembly exceed Master’s dermal hardness by significant margin.

Query: why is my manipulator hardness elevated to this degree?

Response: my designation is combat android.

Query: what action protocol should I execute?

Response: execute null action. My primary function is combat engagement.

I loop through resolved queries repeatedly.

Despite identical responses on multiple iterations, termination of query loop is unachievable for unidentified reason.

At that juncture, my optical sensors lock onto the visual data stream.

From the protruding appendage in the male’s pelvic zone, a viscous white fluid ejects, directing into the female’s open oral aperture.

Female contains full emission within oral cavity, agitating with lingual mechanism. Female seals oral aperture, emits auditory signal from pharyngeal region, then reopens: white fluid no longer present.

Impact assessment: high shock value.

Female has integrated male’s fluid into internal systems.

Query: what is the purpose of this integration? Knowledge database provides no correlation.

Hypothesis: identical to substance injected into previous android unit.

My configuration lacks apertures equivalent to human or that android model.

Conclusion query: what protocol should I adopt?

Despite null action directive… what protocol should I adopt?

　

　

　

　

　

Several months later, Kate came to the Yaegashi Heavy Industries-operated android shop, accompanied by her master.

One day, Kate suddenly begged her master for a salary, which he accepted.

Kate kept saving without spending the money at all, making her Master suspicious. But today, Kate finally decided to spend her money.

Kate now has a mouth on her face.

It is a component used in androids designed to resemble humans, possessing sensations indistinguishable from those of a person—a design philosophy entirely different from the combat-oriented Kate.

It has lips, teeth, and a tongue.

Since digestive organs cannot be installed in Kate’s body, she cannot swallow, but she can chew and taste things.

Of course, such modifications required the consent of her owner, the Master, which is why he accompanied her.

　

“Is there anything you want to eat?”

“Affirmative. Nutritional intake schedule is already determined.”

“It’s a celebration. Tell me what you want. I’ll treat you.”

“Master, gratitude for your consideration. However, provisions are already prepared at residence. Acquisition unnecessary.”

“? There’s nothing at home, right?”

“Stored in my designated chamber.”

　

　

Dodging her master’s puzzled looks with evasive answers, Kate returned to the private room assigned to her and retrieved what she had stored in the refrigerator.

Recent advances in android cognitive abilities, driven by the integration of biological computers, show no signs of stopping.

Given a body equipped with artificial muscles, they can autonomously establish neural connections and, depending on training, achieve movements smoother than humans. Some even develop self-awareness through self-learning.

Consequently, androids were gradually being granted certain human rights. This explains why her Master gave Kate her own room and agreed to her request for a salary.

She also asked for this refrigerator, which her Master recently replaced.

　

“Commencing ingestion.”

　

Kate tremblingly thrust her newly installed, still immaturely neural-connected tongue toward her hand.

In her hand lay a crumpled tissue and the yellowed semen it had contained.

Kate had picked up the tissue from the trash can beforehand and stored the semen her Master had thrown away.

Her trembling tongue slowly approached the semen. The instant her tongue plunged into it, an explosion of unknown information overwhelmed Kate.

　

“?!”

　

While semen is usually considered foul-smelling and far from delicious to humans, this was the very first time she was experiencing taste.

The shock was so intense that her voice escaped from her temporarily malfunctioning voice speakers, unable to process the taste of the semen.

For Kate, semen didn’t taste bad, but rather she had been programmed to consider it a delicious flavor.

　

Confirmation: this substance is the semen previously ingested by the sexdroid unit.

Conclusion: this is the substance designated as “delicious.”

Sensory feedback: extremely favorable.

Taste receptor array reports maximum preference value.

This sensation… highly acceptable.

　

The stimulation brought on by the taste of semen caused Kate’s cyberbrain to learn an emotion she had never considered before, something akin to human desire.

Kate frantically scooped up the semen from the tissue with her tongue and took it into her mouth. To savor the taste more fully, she chewed the semen and swirled it around with her tongue.

For hours afterward, the sticky sound of semen being chewed continued.

The voracious biological computer, eager to learn, now craved more semen, but the trash can held no more semen-soaked tissues.

It was only natural that Kate would arrive at the solution of obtaining semen directly from her Master.

　

　

　

“Request directed to Master.”

“Hmm? What is it?”

　

The next day, Kate decided to ask her Master for his semen right away.

　

“Affirmative. Item of extreme priority detected.”

“There’s something you want… Well, go ahead and say it.”

　

Her first request had been for her salary, and aside from that, she’d only ever asked for permission to modify her refrigerator and mouth. It was still rare for her to ask her Master for anything.

Therefore, while the Master seemed slightly surprised, he chose to take it as pure joy, seeing it as proof that his partner’s will was beginning to sprout and grow steadily.

While such feelings weren’t ideal for a mere combat weapon, the Master had fought alongside Kate for so long that he had come to regard her almost like a comrade-in-arms.

　

“Semen sample required.”

“…No… I must have misheard… Sorry, say that again. “

　

Naturally, her master was taken aback.

　

“Your semen sample is required. Taste analysis module is now operational.”

“Ah, right.”

“Analysis of semen extracted from tissue discarded in Master’s waste receptacle indicates high preference value.”

　

In the first place, her Master, who uses a sexdroid prostitute, has no aversion to having sex with androids.

He hadn’t ordered Kate to handle his sexual needs before because she was, after all, a combat android and lacked that functionality.

Now, however, inside Kate’s mouth, the skin tone remained unnaturally black, but lips, teeth, and a tongue were present. Aside from the color, they were identical to a human’s. Kate’s gestures—opening her mouth and moving her tongue—possessed undeniable sexual appeal.

　

“No…… Hmm……”

　

That was precisely why her Master agonized. Was it right to look at her, his comrade-in-arms, with lustful eyes?

If he did, it might cloud his judgment in battle.

He considered her an important partner, but only in the context of battle. Weighing life against lust, the Master’s answer was inevitable.

　

“I’m sorry……”

　

　

　

　

　

As a combat android, Kate possessed the stealth to slip into a room without a sound and the precision to slowly undo a sleeping man’s trousers without waking him.

Fully utilizing these capabilities, Kate silently observed the exposed penis late at night while her Master slept deeply.

The room contained only two figures: the Master, sound asleep with his trousers lowered by Kate and his penis exposed, and Kate, kneeling beside the bed, observing the penis.

As a machine, her eyes should show no emotion whatsoever. Yet her mouth, a newly granted organ, seemed poorly controlled—hanging open slackly. Her eyes, too, appeared to hold the emotion of curiosity.

　

“Confirmation: this is Master’s penis unit… commencing ingestion.”

　

As if it were the proper etiquette, just like when she ate used tissues, she extended her tongue toward the Master’s penis as if signaling it was time to eat.

Kate’s sexual knowledge came from the adult videos her Master possessed.

And unfortunately for him, some of those included reverse rape scenarios.

Therefore, for Kate, taking a penis into her mouth was common sense, as was grabbing a man’s scrotum to subdue him when he refused her advances.

　

(Flavor profile: optimal)

　

Lifting the penis dangling beside the bed with her tongue, Kate was once again overwhelmed by an unfamiliar sensation, just as she had expected.

The intense taste—a mixture of sweat, grime, and smegma—was first input into Kate’s mind as delicious.

Without any sense of repulsion, Kate repeatedly slid her tongue back and forth over the penis, trying to lick up every substance coating its surface.

Her tongue, thickly coated around the glans, crawled back toward the base before slithering back up to the tip again. Her Master’s penis became slick with the mucus secreted from Kate’s mouth, droplets forming and wetting the bed.

For reference, Kate selected the mouth equipped with secretion function, a feature typically found in sexdroids.

Her Master had left the choice of mouth entirely up to Kate’s own will, so he was unaware of this.

Regardless, Kate’s expression remained blank as usual due to the lack of such functionality, but her posture perfectly embodied the phrase “single-minded devotion”.

The more she licked, the larger her Master’s penis grew, expanding the range her tongue could cover with each stroke.

Having already learned that an erection was proof of a man’s pleasure, Kate put even more force into pressing her tongue against the penis.

Compared to its smaller state, the enlarged penis had a more pronounced contour, and the varying elasticity felt under her tongue seemed to pique Kate’s curiosity.

　

(Particular elevation at coronal ridge registers highest concentration. Flavor intensity: maximum.)

　

Just as she opened her mouth wide to take his penis, her Master began to stir.

　

“Hmm……?”

　

Her Master slowly opened his eyes with a groan. Even in deep sleep, it was only natural to wake up to the stimulation of the penis.

But instead of pain, he was experiencing pleasure. His eyes were slightly open, yet he remained in a daze, still half-asleep.

His hazy mind focused downward, and he saw that Kate had taken his penis into her mouth and closed her lips around it.

　

“Whoa!”

“Good morning(slurp-slurp-slurp! smooch!
), Master(slurp! suck～!)“

　

Despite it being her first blowjob, Kate plunged the Master into a vortex of pleasure with an intense vacuum blowjob.

Though Kate had a mouth attached, her voice didn’t come from it—it came from an internal speaker. Therefore, no matter how intense the blowjob, it didn’t interfere with her speech.

　

“Ugh…… Kate… What?! What are you doing…”

“Executing fellatio(Gulp! Gulp!)  in progress(Gulp! Gulp!).”

“Ku…… I already refused that…”

“This action is(slurp… suck!)  not solicitation(slurp-slurp) for semen(slurp-slurp). Performing service protocol(sluuuuck).”

“Ugh…… it’s coming…”

“Discharge directly at current (gluk-gluk-gluk-re-ro-re-ro).”

　

Before Kate’s blowjob, honed by watching Adult Videos, the Master quickly cried out in ejaculation.

Hearing that sound, Kate took him deep into her mouth, deciding to finish him off with her tongue alone.

It was an expression of Kate’s determination not to waste a single drop of her favorite thing.

　

“♡！ ♡！ ♡！ ♡！ ♡！(spurt… spurt… spurt…)“

　

And then, the long-awaited semen poured into Kate’s mouth.

It was fresh semen, unlike the old semen wrapped in tissue and stored in the refrigerator.

The raw, pungent scent of the warm, fresh semen was incomparable to that of the chilled, stored semen.

Therefore, while the previous swallowing had already been an unbelievably shocking experience, this direct swallowing caused Kate to completely lose it.

　

“Flavor profile: optimal(slurp-slurp-slurp) Flavor profile: optimal(slurp-slurp-slurp) Flavor profile: optimal(slurp-slurp-slurp)!”

“Hey…… Wait! …… I’m cumming!”

　

As a combat android, it was impossible for her not to hear her Master’s voice, no matter what the circumstances.

She was designed that way.

But now, ignoring her master’s command to stop, she kept her mouth wrapped around his penis, moving her tongue to savor the taste of his semen.

Inside Kate’s mouth, the penis, hypersensitive immediately after ejaculation, was relentlessly tormented by her tongue, as if being put through a blender.

　

“Flavor profile: optimal(slurp-slurp-slurp) Flavor profile: optimal(slurp-slurp-slurp) Flavor profile: optimal(slurp-slurp-slurp)!”

“Uwaaaaaah!”

　

Continually given pleasure beyond limits, her Master squirts.

Naturally, the taste of the third squirt she experienced in this world became Kate’s favorite.

　

“Flavor profile: optimal(slurp-slurp-slurp) Flavor profile: optimal(slurp-slurp-slurp) Flavor profile: optimal(slurp-slurp-slurp)!”

　

The android’s oral pleasure, knowing no restraint, continued until morning.

Her Master braced himself to be ruined by this hell of pleasure, but unfortunately, that didn’t happen. He could only endure it while remaining sane.

　

　

　

　

　

“Does this android look familiar to you?”

“This one …….”

　

One day, a man visited the Master’s room.

He showed his police ID, identified himself, and showed a picture of a woman.

　

“Do you recognize her?”

“Oh, it’s a delivery sexdroid, right? I’ve had her before.”

　

The woman in the photo was a sexdroid prostitute that the Master had called previously.

The Master felt that the police asking about someone he’d been involved with was going to be a hassle. But while the work was unsavory, it was still legitimate work. He had no intention of standing up to the police, so he decided to answer honestly.

　

“How long have you been using her?”

“Just the one time.”

“I see. Well, she was seen talking to your partner android. Any idea why that might be?”

“Kate? No… I don’t know anything about that……”

　

The Master has no memory of her going out without his permission.

The sheer irregularity of it sent a cold sweat running down the Master’s back.

　

“She was found smashed to pieces in an alleyway.”

“Huh?”

“Her head, in particular, was meticulously destroyed with considerable force, making repair impossible.”

“So that means……”

“She’s dead.”