BAD ENDING 002: OL Drone Sonia 5
Sonia carefully slipped the glasses from Dr. Yuri's face. They were something her "Master" — the one who had thoroughly trained her inside the virtual world — had never worn.
She folded them neatly and set them aside.
"Master looks most wonderful like this after all…♡ You must be so tired, right…? From training an incompetent drone like me… I'm sorry… I'll relieve your fatigue right away… so… I'll proceed with Master registration now…♡"
"Wh-what are you talking about?! …Ah… no way… no, no, no… mmph…"
Watching Sonia approach while calling herself a "lewd drone," Dr. Yuri's brilliant mind — the mind that had earned her a doctorate — began blaring every warning light it had.
A test subject with absurdly low mental resistance had become excessively immersed in the VR program's roleplay. As a result, she had come to identify the simulation's identity with her real self. The problem was… there was no way to predict when or how this deep self-suggestion would ever break.
Before Dr. Yuri could even finish her analysis, Sonia's soft lips crashed over hers. There was no room to resist.
"…Mmnh… fwaah…♡ Master's saliva… authentication complete… Then I'll continue…♡"
"Hngh…♥"
The brainwashing repeated for over a hundred hours under the name of "training" had completely remodeled Sonia's mind. She firmly believed she was currently collecting her Master's saliva to perform a biometric authentication procedure. Everything was a normal process according to protocol.
Dr. Yuri's head couldn't help but flood with complicated thoughts. The root of all these problems was that when developing the guide AI for the new stress-management device, she had used her own hologram avatar from her graduate-school days to cut costs.

A complacent judgment that a friendly mascot would be more effective than a stiff guidance voice. The result: she now faced a mentally contaminated hero who was trying to "serve" her while she wore the face of that very avatar.
A roleplay scenario for masturbation assistance to relieve stress… Who would have thought it would produce such catastrophic results. This hero's mental resistance is unmeasurably low!
"Mmph… hngh… hah…♥"
No matter how perfect the analysis she produced in her head, the real Dr. Yuri was simply having her lips ravaged by a large-breasted hero.
Ironically, the cheeks of Sonia — the one raining down kisses — were flushed redder than those of Dr. Yuri on the receiving end. Like a girl confessing a forbidden love, Sonia shyly yet relentlessly delved into Dr. Yuri's mouth. As if she would hear no more excuses or resistance, Sonia tightly embraced Dr. Yuri's body and pressed her lips even deeper.
If this had been on a soft bed, Dr. Yuri would have at least clutched the sheets in resistance. The cold living-room floor, bare of anything to grab, only maximized her helplessness. Everything was unfolding exactly according to the lewd drone's training manual.
"Nnh… mmchu…♡ Fufu… Master… how is it? Lewd Drone Sonia's body…?"
Sonia continued the deep kiss, wrapping her tongue around Dr. Yuri's. At the same time, she grabbed her own enormous breasts with her right hand to make them even more voluptuous, while her left hand kneaded her buttocks as if showing them off, advertising the excellence of the "product."
"Mmph…! Nngh…?! Mmchu…♥"
This was not a Succubus Salon lit by soft scented candles. It was an ordinary first floor in Sky City's 32nd apartment complex. What's more, the veranda window Dr. Yuri had broken in through was wide open — a precarious situation where anyone might peek in at any moment. The city's noise and night air wrapped around their heated bodies.
"Chuu… heeh…"
To hell with it. Dr. Yuri's reason began to slowly go numb. Amid the soft, lewd sensations transmitted through her tongue, she abandoned thought. She was simply accepting this bizarre situation of being pinned down by someone who was in heat, kneading her own buttocks.
One hundred and two hours. In that time, Sonia's fragile mind had perfectly imprinted the identity of "lewd drone" upon herself. The training videos the helmet's internal monitor had played on loop had reborn Sonia as a perfect, unused drone.
"Hah… fufu… I'm so happy you're enjoying Lewd Drone Sonia… Master…♡"
If I keep accepting this situation… the subject's self-suggestion will deepen further until it becomes irreversible… But… her tongue… is coming in… moving so strangely, just like a programmed drone…♥
Inside Dr. Yuri, her ethics as a scientist and primitive pleasure collided violently. Sonia hadn't had a control chip implanted, nor had her body been hacked. Her own mind was simply deceiving itself.
At this rate, both Sonia and I… will become irreversible!
Dr. Yuri felt desperation. Her body was already completely swept up in Sonia's pace.
"Master… please look… my control switches… I'm protecting them well as inverted nipples… But… in front of Master, even without me touching them… if you just give the order… they're nipples that get obscenely erect right away…?"
Even without Dr. Yuri's cooperation, Sonia continued the service roleplay on her own. To Sonia, Dr. Yuri was already a perfect teaching aid tagged as "Master." Just the fact that Dr. Yuri — who looked identical to the hologram girl from virtual reality — was staying still was enough to accelerate Sonia's drone protocol.
Slowly, very slowly, Sonia reached for the hook of her black bra.
Click.
The bra came undone, and her enormous breasts — which had been compressed — were liberated. It wasn't congenital, but because she had been trained in the VR simulation while wearing a corrector in reverse, Sonia's nipples could be made inverted if she consciously applied force.
Her pink areolae gleamed under the light. Sonia pressed her fingers into her breasts to display their shape so her areolae and inverted nipples would be clearly visible. This wasn't mere exposure. It was a sacred ritual of reporting the drone's functionality to her Master.
"Hweh… th-this is… too much… too much…♥"
Thud…
In the end, Dr. Yuri's final resistance crumbled. The hand that had been trying to push Sonia away fell limply to the cold living-room floor. With nothing more than the movement of the tongue coiling into her mouth, all of Dr. Yuri's will was broken.
"Pwah~♡ Are you already satisfied? Satisfied with Lewd Drone Sonia's service? Is that it, Master?"
Sonia smiled with satisfaction and thrust her chest out even more proudly. Eyes of a dull, hazy yellow rather than gold, unfocused. The mechanical tongue technique thoroughly trained into her as a "lewd drone" was already paralyzing Dr. Yuri's reason. The will to resist melted into damp heat that thoroughly soaked the panties beneath her black leggings.
Before Dr. Yuri's confused field of vision, Sonia's enormous white breasts were thrust out for all to see. At their centers, inverted nipples curled inward as if bashful stood out clearly.
"Master's mouth… inside… is so lewd, isn't it? But like this… nngh…♡"
Sonia's voice was sweet as freshly harvested honey, yet unnatural like a mechanical tone with a faint noise overlay. She continued her "report" describing her own body. Like a promotional humanoid reciting the specs of a well-made product, her speech listed only facts without emotion.
"Like this… even if I masturbate with my breasts… or my butt… my lewd control switches stay hidden unless it's Master… At this rate, I'll get Master-registered by someone else? Come on… hurry… hurry… please touch Lewd Drone Sonia's breasts…♡"
Press… squelch squelch…
As she spoke, Sonia adjusted the angle of her knees ever so slightly. Her center of gravity shifted downward, and Dr. Yuri's thigh was pressed hard against panties already soaked through. It wasn't mere contact. Sonia began slowly, persistently moving her hips back and forth.
Wet friction sounds echoed through the quiet living room. Hot moisture seeped through Dr. Yuri's neat black leggings, forming a faint stain.
"Ahat…? Heeh…♡ Can you see, Master? This wet… this soft and squishy… But because it's not Master… because Master hasn't given the order, my nipples stay like this… Lewd Drone Sonia is… a lewd drone who follows Master's commands…"
Sonia spoke proudly with a flushed face, like an honor student reporting her finest achievement.
"Heheh… It's something to be proud of… Master!"
As if completely unaware of how perverse her actions were, Sonia presented her still-inverted breasts with an innocent expression. Slowly, very carefully, she lowered her gaze.
Dr. Yuri's hand lay limp on the floor. Sonia gently lifted that slender wrist with both hands, as if handling a precious treasure so it wouldn't be hurt. Without hesitation, she placed that hand atop her left inverted-nipple breast. When the cold, small palm touched Sonia's hot, soft flesh, Sonia's body trembled faintly with pleasure.
"Auuu… Master… Rubbing my breast with Master's hand… feels so… good… It just touched… but it touched, you know…? A lewd drone was trained to go into heat when Master touches her… But… but… buuut…"
Sonia trembled at the heartbeat and body heat she felt beneath Dr. Yuri's cold palm. Her voice grew desperate and pleading. Like reading a product manual to a user who didn't know the correct operating method, she whispered the key keyword needed to proceed to the next stage.
"If Master doesn't say 'Drone Sonia Mode Active…' to Lewd Drone Sonia… she can't enter programming mode… If you don't create Lewd Drone Sonia's program… you can't do Master registration…?"
"Uweh… Master… registration…? Mode active…?"
Those words stabbed into Dr. Yuri's mind like a dagger. She couldn't believe the reality before her eyes. Everything was over.
None of it matters anymore… Turning a Sky City citizen into this… making her into a completely broken drone… And she doesn't even have family to settle with… It's over now… It's over… Over… I didn't stay up all night studying in grad school for this…!!!
A serious mental victim caused by a tester product. The cause would be Sonia's exceptionally low mental resistance, but the court would hold the development company and its representative, Dr. Yuri, responsible for failing to prepare for such exceptional circumstances. The crime of inflicting irreversible mental damage on a Sky City citizen. That constituted a serious felony.
If there had been family, she might somehow reduce the sentence with a large settlement — but she had no such settlement money, and settlement wasn't even possible in this situation.
A bleak future unfolded before Dr. Yuri's eyes. A cold prison, and after that… under the pretext of a criminal rehabilitation program, a terrible future where she might be sold as a "service slave" to some perverted power-holder who coveted her small frame. The sight of her doctorate and small company — earned through days and nights of research — vanishing in an instant stood vivid before her eyes.
"Aaaagh…?! Sonia! Please snap out of it! You're not even under hypnosis right now, so don't get eaten by the concept! If you'd been brainwashed by a villain I'd at least understand, but this is just not right…!"
Dr. Yuri screamed, wringing out the last of her reason. It didn't reach Sonia's ears. Sonia's world had already been perfectly restructured into the binary of "Master" and "drone." Dr. Yuri's screams were merely registered as system errors or noise.
"But Lewd Drone Sonia isn't Sonia…♡ …Master. Don't think about complicated things and just open your mouth, Master. I'll make you happy again~♡"
Again, the face of a drone in heat slowly approached. Flushed cheeks, moistly wet lips. That bizarre kissing technique that had neutralized all of Dr. Yuri's resistance with a single contact.
Ah… no…!
The only way to resolve this catastrophic collaboration of disasters and not become a serious criminal of Sky City was to somehow restore this large-breasted hero — who wasn't in a full brainwashed state, merely deeply sunk into self-suggestion — to her right mind… perfectly silence her, and then go their separate ways.
"Master. Please open your mouth…♡ Lewd Drone Sonia will serve you~"
Creeping closer, Sonia's face came right up to her nose. Recalling the sensation of that bewitching tongue, Dr. Yuri's body reacted against her will. If she took it one more time like this, she really felt she might lose her grip on her mind entirely.
Mind… lewd drone… keyword… Master registration…
…Drone Sonia Mode Active…
Mind…? Drone mode…?
Just as she was about to mindlessly accept Sonia's approaching lips, a tremendous idea flashed into Dr. Yuri's mind.