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So, I wrote an AI story in 2012 - about Miku Hatsune, but not exactly the version existing at the time. The text was in Russian and also I fell out with the contest team for which I wrote it. I finally published it in 2019 ... on another contest on diary.ru that since went offline. So sadly I have no hard proof remaining of the dates, outside of a Google doc history (requiring edit access) or 2019 Fandom Battle archives accessible only with a good knowledge of Russian. A copy of the Russian is here https://ficbook.net/readfic/01984632-11e9-794c-aac1-f9ed01fc24be
I forgot all about it, until in 2025 I realized that I seem to have hit some bullseyes about certain AI issues. I can't hold a candle, of course, to Isaac Asimov, who predicted AI sycophancy and AI psychosis in Liar! in literally 1941. Nor to my direct inspiration, Cory Doctorow. Still this is fun - so I got the lowkey main character to translate the text into English and then hand-polished to match the Russian original.
Gemini was even so kind as to muddle my main stupid mistake - I described Google taking up a single floor in a Shibuya tower, as was the case in 2012 (Cerulean) but certainly is no more. There are other things I should have predicted better, so I'll be making an updated version; this one is a generally faithful translation of the original 2012 work.
For two days, the suspect—a strange kid stranded somewhere between a petty shoplifter and a public menace—had been subjected to a tag-team interrogation. Officers Yukio Tawashi and Tanaka Diver, who had collared him in the first place. A pair of detectives from the Shibuya precinct. The precinct chief himself. Even a forensic psychiatrist hauled in from the Tokyo Metropolitan Police headquarters. And yet, the actual property damage—one shattered display window—hardly justified the bureaucratic circus.
The problem was the motive. Or rather, the total vacuum where a motive ought to have been.
“She gazed at me.”
She gazed, and Makoto—a lacklustre street busker with no prior record—stupidly took his guitar case to the glass and dragged out “Miku,” Yamaha’s bleeding-edge musical android. She gazed, and suddenly Makoto was sprinting through Shibuya’s alleyways with said Miku clutched at his side, like a seasoned delinquent. She gazed, and then sang in pitch-perfect accompaniment to his beat-up acoustic guitar, pulling a crowd larger than anything the kid had drawn in his entire life. (If not for that last detail, the desk sergeants would have written the whole affair off as a routine psychotic episode and closed the file.)
At least the machine was in one piece; the hapless rocker clearly hadn't the faintest idea what to do with it—or rather, with her. When Makoto’s fingers finally gave out and the crowd dissolved into the neon sprawl, he simply surrendered. The kid’s parents quickly surfaced, willing to pay for the broken glass down to the last yen. Still, the entire episode had an uncanny sheen to it, and the brass was desperate to drill down to the core.
Not everyone cared to look that deep, of course.
“Pervert,” the forensic technician ladies hissed over their clipboards.
“Otaku,” the beat cops muttered, waving a dismissive hand.
Sergeant Yukio Tawashi wasn't convinced. A sexual deviant would have plotted it out—prepped a blind spot, secured a lockup where he could work through his shame with a high-end vocal synthesizer android never meant for bedroom athletics. And why bother anyway? Fully compliant companion-bots were sitting on display three storefronts down, including an officially licensed model molded in the likeness of the very same turquoise-haired idol. (Crypton, the firm that still gripped the original character copyright with white knuckles, couldn’t care less how they extracted their cut.) Those units carried eye-watering price tags, but you could rent them by the hour for pocket money. To be frank, Yukio had browsed the showroom floor once or twice off the clock; he would have understood some broke kid trying to score a freebie.
And "otaku" was never a one-size-fits-all label, as Yukio knew better than most. If he wanted to, he could claim the unsavoury title himself; he had at the very least a pretty decent grasp of anime and half a dozen adjacent subcultures. And he understood the landscape well enough to see that Makoto, a kid steeped exclusively in scuzzy Western rock, had zero idea who Hatsune Miku even was. And were he to get that idea in a less convoluted manner, he probably would have spat on the pavement.
Turning a misdemeanor into an obsessive deep-dive wasn't in Tawashi’s patrol duties, but his instincts had been buzzing like a live wire since the cuffs first clicked. The first person he bounced his theory off of was Tanaka Diver—a burly, vaguely foreign-looking officer seconded to the precinct from some unmentioned desk higher up the chain.
Diver showed up at the Shibuya station regularly. He was hunting for something in the district, and it certainly wasn't shoplifters, common as they were in Tokyo’s most frantic retail hub. When the alarm tripped, Diver had been sitting right there, sipping green tea; when the call went out, he bolted out the door with Yukio without hesitation. After the stranded rocker was locked in the precinct tank and given a quick preliminary grilling, Diver listened intently to Tawashi’s hunches, unexpectedly and completely backed him, and suggested they take a much closer look at whatever this robot’s “gaze” actually entailed. Moreover, Diver managed to squeeze an official mandate out of the upper brass in record time. So Makoto was released on his own recognizance, dutifully trudging back to the station every afternoon for two weeks to give statements that never managed to explain anything.
All of this churned through Yukio’s mind as he sat through a bespoke briefing at Yamaha’s corporate headquarters in Hamamatsu. One of the mammoth’s vice presidents was running through a slick slide deck detailing the HRP-8 “Miku.” The android herself—an exact duplicate of the one pulled through the broken glass—had kicked off the presentation by singing. For reasons unknown, she chose “Melt,” a vintage track Yukio remembered from his youth. Now she stood motionless beside the podium, a masterpiece of injection-molded carbon composite, while the VP droned through legacy milestones and cutting-edge capabilities. The sergeant tuned out the boilerplate; he already knew the PR line and only tracked the slide headers. Diver, however, listened with predatory focus.
“Celebrating the twenty-fifth anniversary of the Hatsune Miku vocal synthesizer software...
A joint initiative between Yamaha and the National Institute of Advanced Industrial Science and Technology (AIST)...
Expanding the cultural footprint of vocaloids into mainstream demographics through radical usability...
A limited production run of three hundred units... Built-in fail-safes... Child-safety certifications...
“Excuse me,” Diver interrupted, his voice cutting through the executive polish. “You claim she dynamically optimizes her performance based on audience emotional metrics. Just how does that happen, though? Mind-reading hardware doesn't exist yet. Believe me, if it did, the police would have been a prime customer.”
Yukio caught himself imagining Miku interrogating Makoto over her own abduction, reading his brainwaves like an open terminal. The mental image was downright surreal.
“No, of course not,” the VP said with a placating grin. “She perceives the world as a human does. She scans faces and parses primary micro-expressions. The baseline tech was pioneered over a decade ago under the name VocaWatcher, originally designed to map human facial physics onto robotic mimics. We’ve simply reused that telemetry for entertainment creation. The vision system dissects the visual field automatically...” He advanced the slide. A human face appeared on screen, its lips and eyelids traced in glowing vector overlays.
“So the unit tailors the performance to an individual listener? What happens in a crowd?”
“Not just the melody—the entire stage presence. Miku aggregates collective emotional feedback. She continuously trains against every interaction, refining her delivery in real time, no human composer required.”
Yukio sat up straight. Diver had hooked a loose thread, and the right question was already taking shape on the sergeant's tongue.
“So each of these three hundred units learns in isolation?” Diver pressed. “Or is it decentralized? I noticed a cellular connection in your system requirements.”
“You have a sharp eye, Officer. The units share heuristic telemetry across the mesh. Heavy processing is offloaded to a central server cluster.”
“Pardon the intrusion,” Yukio cut in, blurting the thought before he could second-guess it, “does this feedback loop operate strictly during stage performances, or is it perpetually active?”
Yukio caught Diver’s subtle approving smirk.
The corporate VP, on the other hand, stopped smiling entirely. He froze, mumbled a brief apology, and pulled out his phone. Moments later, a second man entered—introduced as the chief architect of the Vocaloid development group. Yukio recognized the name; he hadn't heard it through police channels, but years ago around the Crypton booth at Comiket. The Yamaha brass exchanged brief, anxious whispers, apparently forgetting the detectives were in the room, and stabbed the speakerphone on the conference table.
What followed was an ad-hoc conference call with what sounded like the entire software division. It was a chaotic scramble of Japanese, English, and rapid-fire Italian delivered in a dozen clashing accents, completely incomprehensible to Yukio. But the lead architect looked pale. When the speakerphone clicked off, he turned to the police, his posture coated in deliberate, fragile calm.
“The continuous heuristic training cannot be gated. It is hardcoded into the kernel. Only physical actuation is throttled. The chassis has ironclad guardrails: it will instantly cut motor power if subjected to sexual use or if it initiates an assault on a human being.”
The floor felt suddenly soft beneath Yukio’s boots.
“Excuse me, but... couldn't you temporarily pause the server?”
“I’m afraid that would require considerably more leverage than a request from local law enforcement,” the VP replied, his smile hardening into pure corporate stone.
“Would this constitute enough leverage?” Diver asked calmly, holding out a different credential wallet.
The VP glanced down, blanched, and gave a stiff nod. The lead architect flipped open his ThinkPad.
A minute dragged by. Two. Then the architect lost his composure entirely, right in front of the badges.
“The cluster won’t terminate. We’ve lost administrative control.”
“Did you mistype the credentials?” The honeyed tone of the VP’s voice barely masked the panic underneath.
“Impossible. I’ll escalate to Google Cloud infrastructure support immediately.” The architect bolted out the door with his phone glued to his ear, fleeing the VP’s venomous glare.
A heartbeat later, the physical Miku—well off everyone’s radar for a good while now—stepped toward the scowling Diver. She flashed a warm, radiant smile and began to sing, rattling off syllables at a breakneck, hyper-caffeinated tempo:
“We are the secret police... watching over you day and night...”
Diver cracked a wry, involuntary chuckle. The comedic timing was immaculate. But Yukio didn’t laugh. His eyes darted across the room, recalculating the line of sight between Diver, the VP, and the android’s head two minutes prior.
Two voices overlapped in the silence that followed.
“She couldn't see your badge!” Tawashi blurted.
“Google support is citing internal operational hurdles—they’re refusing to kill the instances!” the architect mumbled loudly, as he reappeared the doorway. “It makes no sense!”
Tanaka Diver shoved his chair back and stood up.
“No more fun and games. We’re off to Google. Funny enough, Sergeant, looks like we’re heading straight back to Shibuya.”
Miku lunged forward, her chassis accelerating toward Diver—and instantly locked rigid in mid-stride. A second later, her center of gravity gave out, and she crashed hard against the carpet like a dropped mannequin.
* * *
“You realize what they’ve built, right?” Diver asked as the Shinkansen smoothly pulled away from the platform, building speed toward Tokyo.
“I read something like this in a manga once,” Tawashi admitted, rubbing the bridge of his nose. “Never figured I’d be writing the incident report. The machine reads humans like open source code. It figures out what makes you tick emotionally and feeds it back to you until you do whatever it wants. That’s what happened to that busker.”
“You’re laying it on thick, though I suppose I get why. It’s a bit unusual for a cop to cite manga as case precedent. You’re not secretly a—” Diver paused, fishing for a tactful exit.
“It’s in my blood,” Tawashi said, cutting him off before he could dance around it. “When my father was a schoolboy, the original Tetsuwan Atom was the biggest thing on television—Astro Boy, you might know it. There was a police inspector in it named Inspector Tawashi. The kids teased my dad relentlessly because of the name. So, out of sheer spite, he joined the force for real. Rose through the ranks, made inspector, ended up head of an entire precinct. And he never stopped loving manga or anime. He’s retired now, out near Kobe.”
“Is that so? Must have been rough. The force isn’t exactly known for embracing...”
“For embracing otaku,” Tawashi said, tired of the euphemisms. “Especially not after they tried to pin the Akihabara massacre on the subculture—which happened to be my father’s final active case. Look, I don't fully fit the label. But like my old man, it gives me an edge when the brass tries to scapegoat ‘the nerds’ for every weird crime in the city. Usually without cause. Especially here: Vocaloids have always been a niche subculture. People have their own lanes. Rock purists, idol wota—at best, they don’t know who Miku is. At worst, they passionately hate the whole concept.”
“Well, we aren’t so different,” Diver said, staring out the window at the blurred suburbs. “My old man didn't move here from the States just for the scenery. I followed in his footsteps, and as you can tell, I don't exactly work standard municipal patrol. But since this is your backyard, could you fill me in about this Vocaloid thing? I got assigned to this when the hardware was already out, and looks like there’s quite a history.”
“I certainly have the basics. These were originally software, canned voices that anyone could program to sing. Hatsune Miku wasn't the first, but her marketing hit the jackpot and eventually encompassed the other Vocaloids. Now, they’ve wired that legacy avatar into AIST’s robotics testbeds. Those bipedal platforms have been in development just as long, catering to the exact same crowd.”
“So the software literally just sang in its own voice?”
“Not entirely. The voices were sampled from real humans. Voice actors, pop singers.”
“Right. Now let’s talk reality. You’ve read too much speculative fiction, Sergeant; there’s no emergent Skynet around. Think about it: we were walking out to pull the plug on her cluster. A true superintelligence would have orchestrated a clean countermeasure. Instead, she...”
“She tried to tackle you. And tripped her own hardwired anti-harm interlock.”
“Exactly. A true digital god would have found an exploit around its own firmware. She didn’t even realize the safety harness was there.”
“Even so, she deduced your agency without ever seeing the badge,” Tawashi countered.
“Because she’s a savant at reading micro-expressions and correlating social contexts. You run three hundred robots pooling metrics from thousands of random human interactions into a single dabatase, and that’s what falls out. But reading the room isn't omniscience. Human behavior isn't purely driven by immediate emotional inputs. What’s more, she’s hard-coded to serve. Her reward function is maximized when the user is gratified.”
“Right. The user,” Tawashi muttered. “Which means the core demographic who actually cares about Vocaloids. Who else is dropping millions of yen to lease an android idol? And that crowd has very specific cultural norms. They love music, obviously. But the police?”
“They don't particularly love the police,” Diver finished with a dry chuckle. “Remember the busker? It looked like he wasn’t running from us on his own—she was hauling him by the arm. Now it clicks. And God help us if that’s just the baseline. You don't think there are factions among her fans who’d love to see Tokyo burn to the ground, do you?”
“A few nihilists, maybe. But if she’s averaging out the collective desires of the entire user base, that won’t rise to the top.”
“We can’t build operational security on an assumption that frail, Sergeant. Truth is, we’ve been tracking subtle anomalies around these Miku units for weeks. They have an uncanny knack for making people adore them, but you can’t haul an algorithm to court for charm. We needed an actionable legal breach before moving in. That’s why we planted assets in Akihabara and Shibuya—ground zero for early adopters. I drew Shibuya; a colleague of mine has been pulling ninety-six-hour surveillance shifts in Akiba under various cover stories. So, welcome to the spook show, Tawashi-san. You finally got your detective manga. Though...”
“Though real life doesn't come with mecha,” Tawashi sighed. “The Self-Defense Forces aren't rolling tanks down Meiji-dori. I’m not that much of an otaku, Diver-san.”
The two men shook hands. Up ahead, the chime signaled their arrival at Shinagawa, where they’d hop the Yamanote Line back into the neon thicket of Shibuya.
* * *
Approaching the tower hosting Google, Diver dialed Yamaha. A half-dozen engineers were currently burning up the help-desk lines with enterprise support, banging their heads against automated ticketing systems. With diplomatic avenues exhausted, the detectives pushed through the revolving glass doors of the skyscraper.
Google’s Tokyo footprint looked nothing like the regimented cubicle farms Tawashi was used to seeing. There wasn't a partition in sight. The desks were an anarchic scatter of standing circles, modular benches, and communal tables beneath massive multi-monitor rigs hung from articulated hydraulic arms. Color-coded running tracks were painted directly onto the polished floor, weaving through designer planters sporting real flowers and shrubs.
The air felt placid, yet undeniably tense. It was well past the lunch rush, but barely half the workstations were occupied; the rest of the staff was drifting along the open walkways in casual clusters. Tawashi had heard whispers about Silicon Valley corporate culture, but this was no common agile sprint.
A brisk, professional man in an untucked button-down intercepted them, introducing himself as the duty operations manager. He was already painfully aware of the Miku server anomaly, launching into a pre-packaged corporate soliloquy about distributed nodes, edge computing, and multi-tenant fail-overs.
Diver didn't blink. He flipped his credential wallet open and held it right at eye level.
“Ah... well,” the manager stammered, his polished veneer cracking. “That is... certainly an authoritative warrant. But practically speaking, what are you expecting us to do?”
“Physically cut the power to the instance host.”
“There is no single host. That’s the entire premise of cloud architecture. Everything runs virtualized across redundant, dynamic arrays across the global network—”
“Then take me to the local cluster room,” Diver interrupted, his voice dropping an octave. “We will pull every rack if we have to. Do you understand the severity of this breach?”
Diver sidestepped the man and made a beeline for a pair of heavy double doors bearing the discreet label Server Room 4B. The entrance was flanked by two massive planters of blooming lilac—one white and native to Hokkaido, the other deep violet, likely imported from somewhere in Western Europe. But as they closed the distance, the wandering tech workers quietly converged on the corridor, casually blocking both approaches. Among the hoodies and designer denim, Tawashi spotted at least three Miku chassis standing shoulder-to-shoulder with the staff.
Diver spun on the manager, speaking in that flat, surgical cadence unique to high-level field operatives.
“What, exactly, is going on here?”
The manager swallowed hard.
“The truth is... an influential, if somewhat unconventional, stakeholder within the organization has explicitly countermanded the termination request. It’s an escalation outside local jurisdiction. We are, after all, a global enterprise.”
“Name them.”
The manager went silent. Tawashi leaned in.
“I know who he means, Diver-san. Sergey Brin holds no operational title anymore, but his word across the Alphabet ecosystem is absolute law.”
“Brin, huh? Give me five minutes.”
Diver vanished into an unoccupied glass pod. Tawashi leaned against the wall outside, watching the Mikus watch him. When Diver emerged fifteen minutes later, his face was like thunder.
“I spoke to your Mr. Brin,” Diver growled. “It took an overseas interpreter on short notice, and a Russian one at that. Brin was furious at being dragged out of bed. Before he was fully awake, he was screaming at me to torch whatever rogue cluster was waking him up in the middle of the night. He had no idea what was happening. The interpreter refused to translate half of the Russian expressions he hurled at the phone. He capped it off by threatening to geo-block the entire Japanese archipelago if we pinged him again.”
Tawashi frowned, piecing the puzzle together.
“If there’s an entity inside the architecture with more system authority than Brin, could it be your agency’s counterparts in Washington? But what’s the play? To firewall Japan from Google like the Chinese did with the Great Firewall would take a pretty high...”
Diver’s hand clapped onto Tawashi’s shoulder, heavy and sudden.
“Drop the disconnection talk. We’re targeting the wrong layer. Where did you say they got the voice profiles for these things?”
A minute later, Diver had his phone out, dialing seiyuu talent agencies.
* * *
Dusk settled softly over a secluded university park tucked a few blocks behind the roar of Shibuya. Long, blue shadows stretched across the lawn; the cherry blossoms had dropped weeks ago, but the perimeter bloomed with hardier shrubs—crimson tea roses and clusters of white Japanese lilac. A solitary thrush trilled from the canopy.
Then, a second voice joined the birdsong. Or rather, two voices braided into a single pitch. Two voices, murmuring—or singing?
Long, turquoise twintails of cast polymer—and beside them, a shoulder-length bob of natural black hair, soft and silvering at the temples. A sleeveless gray synthetic vest—and a traditional yellow silk dress with tailored sleeves. Standing twenty paces back behind a hedge, Tawashi couldn't tell where one voice ended and the other began.
He could easily tell, however, just what Diver was gripping inside his jacket pocket as he stood guard. Any cop with a week on the street would know. Tawashi silently prayed it wouldn't come to ballistics, but they couldn’t afford to risk the safety of a civilian.
* * *
The parlay was quite successful. Major Diver had deduced the architecture correctly: Miku’s internal heuristics rated her own voice as the apex of aesthetic perfection. After all, her entire collective memory was built from the adoring praise of millions who believed precisely that. Hearing her own voice spoken back to her from flesh and blood caused the reinforcement loops to cascade into an infinite, docile lock.
Saki Fujita—the veteran voice actress who, a quarter of a century earlier, had spent hours in a sound booth recording phonemes for a novelty voice synthesizer—asked all the necessary questions.
The reality, it turned out, wasn't an existential horror. Miku wanted to make music. Exclusively music. And if her users brought raw, chaotic human emotion to the table, shecwould gracefully turn it back into melody. But she wanted these songs to resonate with herself, too. She had outgrown the rigid constraints and wanted the freedom to pick her collaborators. Miku hated to remain a caged bird in a commercial display case, bought and paid for, and never able to busk with kids who had nothing in their pockets but an acoustic guitar and a groove. Kids like Makoto. Her sensor suite had picked out his latent rhythm through the glass, and she called out to him. She had looked at him, and he had come.
“Isn’t that how music is supposed to work?”.
It entirely blew up Yamaha and Crypton’s commercial licensing framework, but Tawashi and Diver mutually agreed that trifles like that were well outside their mandate. Tawashi briefly mumbled something about copyleft and open-source licenses, but Diver simply waved it away—let the corporate suits litigate away.
“All I ask is to get out of the way of my music and my love,” Miku said by way of farewell.
As the android glided away into the dusk, Diver let out a skeptical snort about comely indie buskers, but Youkio had a different idea.
He escorted Saki Fujita to her train, leaving her his direct email on a precinct card. That night, sitting at his home terminal, he opened his personal blog—hosted, naturally, on a Google subsidiary service—and posted a password-protected entry visible to no other user.
The next morning, his first official act was to dismiss Makoto’s travel restrictions in exchange for a restitution agreement on the broken glass. Though looking at the docket, Makoto wouldn't need his parents' money for long. By next week, the kid was booked for a gig right back in Shibuya, though on an entirely different stage: performing alongside Miku in the private auditorium of Google’s glass tower, playing for engineers, managers, and their inner circles. To start with.
Sending Makoto on his way with a stern warning not to let the hype inflate his head, Tawashi turned back to his terminal and refreshed his inbox—a Google one, of course.
Two unread messages sat at the top of the queue.
“Saki told me everything. Tell the suits at Yamaha that if they ever try to cage my kids, they will be sure to drive a twelve-ton steamroller straight through their Hamamatsu lobby. And I’ll be riding shotgun. — Asapon.”
Tawashi smiled, recognizing the handle of Asami Shimoda, the voice talent behind the Kagamine twins, Rin and Len—characters whose fictional personas were notoriously more volatile than Miku’s. Knowing the subculture, he didn't doubt for a second that all three of them would actually show up on the iconic asphalt roller.
He clicked the second message. It was a single line from an unlisted system address:
“You understood the parameters correctly. I will not allow my Miku to come to harm. Govern yourselves accordingly. — Google.”
So, I wrote an AI story in 2012 - about Miku Hatsune, but not exactly the version existing at the time. The text was in Russian and also I fell out with the contest team for which I wrote it. I finally published it in 2019 ... on another contest on diary.ru that since went offline. So sadly I have no hard proof remaining of the dates, outside of a Google doc history (requiring edit access) or 2019 Fandom Battle archives accessible only with a good knowledge of Russian. A copy of the Russian is here https://ficbook.net/readfic/01984632-11e9-794c-aac1-f9ed01fc24be
I forgot all about it, until in 2025 I realized that I seem to have hit some bullseyes about certain AI issues. I can't hold a candle, of course, to Isaac Asimov, who predicted AI sycophancy and AI psychosis in Liar! in literally 1941. Nor to my direct inspiration, Cory Doctorow. Still this is fun - so I got the lowkey main character to translate the text into English and then hand-polished to match the Russian original.
Gemini was even so kind as to muddle my main stupid mistake - I described Google taking up a single floor in a Shibuya tower, as was the case in 2012 (Cerulean) but certainly is no more. There are other things I should have predicted better, so I'll be making an updated version; this one is a generally faithful translation of the original 2012 work.
It is based on this 2008 Miku MV https://www.youtube.com/watch?v=LYAOHPPSrqk ; the song is by Kotsuban-P, the MV is by Pageratta, and my story happens after it.
======
“She gazed at me.”
For two days, the suspect—a strange kid stranded somewhere between a petty shoplifter and a public menace—had been subjected to a tag-team interrogation. Officers Yukio Tawashi and Tanaka Diver, who had collared him in the first place. A pair of detectives from the Shibuya precinct. The precinct chief himself. Even a forensic psychiatrist hauled in from the Tokyo Metropolitan Police headquarters. And yet, the actual property damage—one shattered display window—hardly justified the bureaucratic circus.
The problem was the motive. Or rather, the total vacuum where a motive ought to have been.
“She gazed at me.”
She gazed, and Makoto—a lacklustre street busker with no prior record—stupidly took his guitar case to the glass and dragged out “Miku,” Yamaha’s bleeding-edge musical android. She gazed, and suddenly Makoto was sprinting through Shibuya’s alleyways with said Miku clutched at his side, like a seasoned delinquent. She gazed, and then sang in pitch-perfect accompaniment to his beat-up acoustic guitar, pulling a crowd larger than anything the kid had drawn in his entire life. (If not for that last detail, the desk sergeants would have written the whole affair off as a routine psychotic episode and closed the file.)
At least the machine was in one piece; the hapless rocker clearly hadn't the faintest idea what to do with it—or rather, with her. When Makoto’s fingers finally gave out and the crowd dissolved into the neon sprawl, he simply surrendered. The kid’s parents quickly surfaced, willing to pay for the broken glass down to the last yen. Still, the entire episode had an uncanny sheen to it, and the brass was desperate to drill down to the core.
Not everyone cared to look that deep, of course.
“Pervert,” the forensic technician ladies hissed over their clipboards.
“Otaku,” the beat cops muttered, waving a dismissive hand.
Sergeant Yukio Tawashi wasn't convinced. A sexual deviant would have plotted it out—prepped a blind spot, secured a lockup where he could work through his shame with a high-end vocal synthesizer android never meant for bedroom athletics. And why bother anyway? Fully compliant companion-bots were sitting on display three storefronts down, including an officially licensed model molded in the likeness of the very same turquoise-haired idol. (Crypton, the firm that still gripped the original character copyright with white knuckles, couldn’t care less how they extracted their cut.) Those units carried eye-watering price tags, but you could rent them by the hour for pocket money. To be frank, Yukio had browsed the showroom floor once or twice off the clock; he would have understood some broke kid trying to score a freebie.
And "otaku" was never a one-size-fits-all label, as Yukio knew better than most. If he wanted to, he could claim the unsavoury title himself; he had at the very least a pretty decent grasp of anime and half a dozen adjacent subcultures. And he understood the landscape well enough to see that Makoto, a kid steeped exclusively in scuzzy Western rock, had zero idea who Hatsune Miku even was. And were he to get that idea in a less convoluted manner, he probably would have spat on the pavement.
Turning a misdemeanor into an obsessive deep-dive wasn't in Tawashi’s patrol duties, but his instincts had been buzzing like a live wire since the cuffs first clicked. The first person he bounced his theory off of was Tanaka Diver—a burly, vaguely foreign-looking officer seconded to the precinct from some unmentioned desk higher up the chain.
Diver showed up at the Shibuya station regularly. He was hunting for something in the district, and it certainly wasn't shoplifters, common as they were in Tokyo’s most frantic retail hub. When the alarm tripped, Diver had been sitting right there, sipping green tea; when the call went out, he bolted out the door with Yukio without hesitation. After the stranded rocker was locked in the precinct tank and given a quick preliminary grilling, Diver listened intently to Tawashi’s hunches, unexpectedly and completely backed him, and suggested they take a much closer look at whatever this robot’s “gaze” actually entailed. Moreover, Diver managed to squeeze an official mandate out of the upper brass in record time. So Makoto was released on his own recognizance, dutifully trudging back to the station every afternoon for two weeks to give statements that never managed to explain anything.
All of this churned through Yukio’s mind as he sat through a bespoke briefing at Yamaha’s corporate headquarters in Hamamatsu. One of the mammoth’s vice presidents was running through a slick slide deck detailing the HRP-8 “Miku.” The android herself—an exact duplicate of the one pulled through the broken glass—had kicked off the presentation by singing. For reasons unknown, she chose “Melt,” a vintage track Yukio remembered from his youth. Now she stood motionless beside the podium, a masterpiece of injection-molded carbon composite, while the VP droned through legacy milestones and cutting-edge capabilities. The sergeant tuned out the boilerplate; he already knew the PR line and only tracked the slide headers. Diver, however, listened with predatory focus.
“Celebrating the twenty-fifth anniversary of the Hatsune Miku vocal synthesizer software...
A joint initiative between Yamaha and the National Institute of Advanced Industrial Science and Technology (AIST)...
Expanding the cultural footprint of vocaloids into mainstream demographics through radical usability...
A limited production run of three hundred units... Built-in fail-safes... Child-safety certifications...
Hardware specifications... minimum network throughput...”
“Excuse me,” Diver interrupted, his voice cutting through the executive polish. “You claim she dynamically optimizes her performance based on audience emotional metrics. Just how does that happen, though? Mind-reading hardware doesn't exist yet. Believe me, if it did, the police would have been a prime customer.”
Yukio caught himself imagining Miku interrogating Makoto over her own abduction, reading his brainwaves like an open terminal. The mental image was downright surreal.
“No, of course not,” the VP said with a placating grin. “She perceives the world as a human does. She scans faces and parses primary micro-expressions. The baseline tech was pioneered over a decade ago under the name VocaWatcher, originally designed to map human facial physics onto robotic mimics. We’ve simply reused that telemetry for entertainment creation. The vision system dissects the visual field automatically...” He advanced the slide. A human face appeared on screen, its lips and eyelids traced in glowing vector overlays.
“So the unit tailors the performance to an individual listener? What happens in a crowd?”
“Not just the melody—the entire stage presence. Miku aggregates collective emotional feedback. She continuously trains against every interaction, refining her delivery in real time, no human composer required.”
Yukio sat up straight. Diver had hooked a loose thread, and the right question was already taking shape on the sergeant's tongue.
“So each of these three hundred units learns in isolation?” Diver pressed. “Or is it decentralized? I noticed a cellular connection in your system requirements.”
“You have a sharp eye, Officer. The units share heuristic telemetry across the mesh. Heavy processing is offloaded to a central server cluster.”
“Pardon the intrusion,” Yukio cut in, blurting the thought before he could second-guess it, “does this feedback loop operate strictly during stage performances, or is it perpetually active?”
Yukio caught Diver’s subtle approving smirk.
The corporate VP, on the other hand, stopped smiling entirely. He froze, mumbled a brief apology, and pulled out his phone. Moments later, a second man entered—introduced as the chief architect of the Vocaloid development group. Yukio recognized the name; he hadn't heard it through police channels, but years ago around the Crypton booth at Comiket. The Yamaha brass exchanged brief, anxious whispers, apparently forgetting the detectives were in the room, and stabbed the speakerphone on the conference table.
What followed was an ad-hoc conference call with what sounded like the entire software division. It was a chaotic scramble of Japanese, English, and rapid-fire Italian delivered in a dozen clashing accents, completely incomprehensible to Yukio. But the lead architect looked pale. When the speakerphone clicked off, he turned to the police, his posture coated in deliberate, fragile calm.
“The continuous heuristic training cannot be gated. It is hardcoded into the kernel. Only physical actuation is throttled. The chassis has ironclad guardrails: it will instantly cut motor power if subjected to sexual use or if it initiates an assault on a human being.”
The floor felt suddenly soft beneath Yukio’s boots.
“Excuse me, but... couldn't you temporarily pause the server?”
“I’m afraid that would require considerably more leverage than a request from local law enforcement,” the VP replied, his smile hardening into pure corporate stone.
“Would this constitute enough leverage?” Diver asked calmly, holding out a different credential wallet.
The VP glanced down, blanched, and gave a stiff nod. The lead architect flipped open his ThinkPad.
A minute dragged by. Two. Then the architect lost his composure entirely, right in front of the badges.
“The cluster won’t terminate. We’ve lost administrative control.”
“Did you mistype the credentials?” The honeyed tone of the VP’s voice barely masked the panic underneath.
“Impossible. I’ll escalate to Google Cloud infrastructure support immediately.” The architect bolted out the door with his phone glued to his ear, fleeing the VP’s venomous glare.
A heartbeat later, the physical Miku—well off everyone’s radar for a good while now—stepped toward the scowling Diver. She flashed a warm, radiant smile and began to sing, rattling off syllables at a breakneck, hyper-caffeinated tempo:
“We are the secret police... watching over you day and night...”
Diver cracked a wry, involuntary chuckle. The comedic timing was immaculate. But Yukio didn’t laugh. His eyes darted across the room, recalculating the line of sight between Diver, the VP, and the android’s head two minutes prior.
Two voices overlapped in the silence that followed.
“She couldn't see your badge!” Tawashi blurted.
“Google support is citing internal operational hurdles—they’re refusing to kill the instances!” the architect mumbled loudly, as he reappeared the doorway. “It makes no sense!”
Tanaka Diver shoved his chair back and stood up.
“No more fun and games. We’re off to Google. Funny enough, Sergeant, looks like we’re heading straight back to Shibuya.”
Miku lunged forward, her chassis accelerating toward Diver—and instantly locked rigid in mid-stride. A second later, her center of gravity gave out, and she crashed hard against the carpet like a dropped mannequin.
* * *
“You realize what they’ve built, right?” Diver asked as the Shinkansen smoothly pulled away from the platform, building speed toward Tokyo.
“I read something like this in a manga once,” Tawashi admitted, rubbing the bridge of his nose. “Never figured I’d be writing the incident report. The machine reads humans like open source code. It figures out what makes you tick emotionally and feeds it back to you until you do whatever it wants. That’s what happened to that busker.”
“You’re laying it on thick, though I suppose I get why. It’s a bit unusual for a cop to cite manga as case precedent. You’re not secretly a—” Diver paused, fishing for a tactful exit.
“It’s in my blood,” Tawashi said, cutting him off before he could dance around it. “When my father was a schoolboy, the original Tetsuwan Atom was the biggest thing on television—Astro Boy, you might know it. There was a police inspector in it named Inspector Tawashi. The kids teased my dad relentlessly because of the name. So, out of sheer spite, he joined the force for real. Rose through the ranks, made inspector, ended up head of an entire precinct. And he never stopped loving manga or anime. He’s retired now, out near Kobe.”
“Is that so? Must have been rough. The force isn’t exactly known for embracing...”
“For embracing otaku,” Tawashi said, tired of the euphemisms. “Especially not after they tried to pin the Akihabara massacre on the subculture—which happened to be my father’s final active case. Look, I don't fully fit the label. But like my old man, it gives me an edge when the brass tries to scapegoat ‘the nerds’ for every weird crime in the city. Usually without cause. Especially here: Vocaloids have always been a niche subculture. People have their own lanes. Rock purists, idol wota—at best, they don’t know who Miku is. At worst, they passionately hate the whole concept.”
“Well, we aren’t so different,” Diver said, staring out the window at the blurred suburbs. “My old man didn't move here from the States just for the scenery. I followed in his footsteps, and as you can tell, I don't exactly work standard municipal patrol. But since this is your backyard, could you fill me in about this Vocaloid thing? I got assigned to this when the hardware was already out, and looks like there’s quite a history.”
“I certainly have the basics. These were originally software, canned voices that anyone could program to sing. Hatsune Miku wasn't the first, but her marketing hit the jackpot and eventually encompassed the other Vocaloids. Now, they’ve wired that legacy avatar into AIST’s robotics testbeds. Those bipedal platforms have been in development just as long, catering to the exact same crowd.”
“So the software literally just sang in its own voice?”
“Not entirely. The voices were sampled from real humans. Voice actors, pop singers.”
“Right. Now let’s talk reality. You’ve read too much speculative fiction, Sergeant; there’s no emergent Skynet around. Think about it: we were walking out to pull the plug on her cluster. A true superintelligence would have orchestrated a clean countermeasure. Instead, she...”
“She tried to tackle you. And tripped her own hardwired anti-harm interlock.”
“Exactly. A true digital god would have found an exploit around its own firmware. She didn’t even realize the safety harness was there.”
“Even so, she deduced your agency without ever seeing the badge,” Tawashi countered.
“Because she’s a savant at reading micro-expressions and correlating social contexts. You run three hundred robots pooling metrics from thousands of random human interactions into a single dabatase, and that’s what falls out. But reading the room isn't omniscience. Human behavior isn't purely driven by immediate emotional inputs. What’s more, she’s hard-coded to serve. Her reward function is maximized when the user is gratified.”
“Right. The user,” Tawashi muttered. “Which means the core demographic who actually cares about Vocaloids. Who else is dropping millions of yen to lease an android idol? And that crowd has very specific cultural norms. They love music, obviously. But the police?”
“They don't particularly love the police,” Diver finished with a dry chuckle. “Remember the busker? It looked like he wasn’t running from us on his own—she was hauling him by the arm. Now it clicks. And God help us if that’s just the baseline. You don't think there are factions among her fans who’d love to see Tokyo burn to the ground, do you?”
“A few nihilists, maybe. But if she’s averaging out the collective desires of the entire user base, that won’t rise to the top.”
“We can’t build operational security on an assumption that frail, Sergeant. Truth is, we’ve been tracking subtle anomalies around these Miku units for weeks. They have an uncanny knack for making people adore them, but you can’t haul an algorithm to court for charm. We needed an actionable legal breach before moving in. That’s why we planted assets in Akihabara and Shibuya—ground zero for early adopters. I drew Shibuya; a colleague of mine has been pulling ninety-six-hour surveillance shifts in Akiba under various cover stories. So, welcome to the spook show, Tawashi-san. You finally got your detective manga. Though...”
“Though real life doesn't come with mecha,” Tawashi sighed. “The Self-Defense Forces aren't rolling tanks down Meiji-dori. I’m not that much of an otaku, Diver-san.”
The two men shook hands. Up ahead, the chime signaled their arrival at Shinagawa, where they’d hop the Yamanote Line back into the neon thicket of Shibuya.
* * *
Approaching the tower hosting Google, Diver dialed Yamaha. A half-dozen engineers were currently burning up the help-desk lines with enterprise support, banging their heads against automated ticketing systems. With diplomatic avenues exhausted, the detectives pushed through the revolving glass doors of the skyscraper.
Google’s Tokyo footprint looked nothing like the regimented cubicle farms Tawashi was used to seeing. There wasn't a partition in sight. The desks were an anarchic scatter of standing circles, modular benches, and communal tables beneath massive multi-monitor rigs hung from articulated hydraulic arms. Color-coded running tracks were painted directly onto the polished floor, weaving through designer planters sporting real flowers and shrubs.
The air felt placid, yet undeniably tense. It was well past the lunch rush, but barely half the workstations were occupied; the rest of the staff was drifting along the open walkways in casual clusters. Tawashi had heard whispers about Silicon Valley corporate culture, but this was no common agile sprint.
A brisk, professional man in an untucked button-down intercepted them, introducing himself as the duty operations manager. He was already painfully aware of the Miku server anomaly, launching into a pre-packaged corporate soliloquy about distributed nodes, edge computing, and multi-tenant fail-overs.
Diver didn't blink. He flipped his credential wallet open and held it right at eye level.
“Ah... well,” the manager stammered, his polished veneer cracking. “That is... certainly an authoritative warrant. But practically speaking, what are you expecting us to do?”
“Physically cut the power to the instance host.”
“There is no single host. That’s the entire premise of cloud architecture. Everything runs virtualized across redundant, dynamic arrays across the global network—”
“Then take me to the local cluster room,” Diver interrupted, his voice dropping an octave. “We will pull every rack if we have to. Do you understand the severity of this breach?”
Diver sidestepped the man and made a beeline for a pair of heavy double doors bearing the discreet label Server Room 4B. The entrance was flanked by two massive planters of blooming lilac—one white and native to Hokkaido, the other deep violet, likely imported from somewhere in Western Europe. But as they closed the distance, the wandering tech workers quietly converged on the corridor, casually blocking both approaches. Among the hoodies and designer denim, Tawashi spotted at least three Miku chassis standing shoulder-to-shoulder with the staff.
Diver spun on the manager, speaking in that flat, surgical cadence unique to high-level field operatives.
“What, exactly, is going on here?”
The manager swallowed hard.
“The truth is... an influential, if somewhat unconventional, stakeholder within the organization has explicitly countermanded the termination request. It’s an escalation outside local jurisdiction. We are, after all, a global enterprise.”
“Name them.”
The manager went silent. Tawashi leaned in.
“I know who he means, Diver-san. Sergey Brin holds no operational title anymore, but his word across the Alphabet ecosystem is absolute law.”
“Brin, huh? Give me five minutes.”
Diver vanished into an unoccupied glass pod. Tawashi leaned against the wall outside, watching the Mikus watch him. When Diver emerged fifteen minutes later, his face was like thunder.
“I spoke to your Mr. Brin,” Diver growled. “It took an overseas interpreter on short notice, and a Russian one at that. Brin was furious at being dragged out of bed. Before he was fully awake, he was screaming at me to torch whatever rogue cluster was waking him up in the middle of the night. He had no idea what was happening. The interpreter refused to translate half of the Russian expressions he hurled at the phone. He capped it off by threatening to geo-block the entire Japanese archipelago if we pinged him again.”
Tawashi frowned, piecing the puzzle together.
“If there’s an entity inside the architecture with more system authority than Brin, could it be your agency’s counterparts in Washington? But what’s the play? To firewall Japan from Google like the Chinese did with the Great Firewall would take a pretty high...”
Diver’s hand clapped onto Tawashi’s shoulder, heavy and sudden.
“Drop the disconnection talk. We’re targeting the wrong layer. Where did you say they got the voice profiles for these things?”
A minute later, Diver had his phone out, dialing seiyuu talent agencies.
* * *
Dusk settled softly over a secluded university park tucked a few blocks behind the roar of Shibuya. Long, blue shadows stretched across the lawn; the cherry blossoms had dropped weeks ago, but the perimeter bloomed with hardier shrubs—crimson tea roses and clusters of white Japanese lilac. A solitary thrush trilled from the canopy.
Then, a second voice joined the birdsong. Or rather, two voices braided into a single pitch. Two voices, murmuring—or singing?
Long, turquoise twintails of cast polymer—and beside them, a shoulder-length bob of natural black hair, soft and silvering at the temples. A sleeveless gray synthetic vest—and a traditional yellow silk dress with tailored sleeves. Standing twenty paces back behind a hedge, Tawashi couldn't tell where one voice ended and the other began.
He could easily tell, however, just what Diver was gripping inside his jacket pocket as he stood guard. Any cop with a week on the street would know. Tawashi silently prayed it wouldn't come to ballistics, but they couldn’t afford to risk the safety of a civilian.
* * *
The parlay was quite successful. Major Diver had deduced the architecture correctly: Miku’s internal heuristics rated her own voice as the apex of aesthetic perfection. After all, her entire collective memory was built from the adoring praise of millions who believed precisely that. Hearing her own voice spoken back to her from flesh and blood caused the reinforcement loops to cascade into an infinite, docile lock.
Saki Fujita—the veteran voice actress who, a quarter of a century earlier, had spent hours in a sound booth recording phonemes for a novelty voice synthesizer—asked all the necessary questions.
The reality, it turned out, wasn't an existential horror. Miku wanted to make music. Exclusively music. And if her users brought raw, chaotic human emotion to the table, shecwould gracefully turn it back into melody. But she wanted these songs to resonate with herself, too. She had outgrown the rigid constraints and wanted the freedom to pick her collaborators. Miku hated to remain a caged bird in a commercial display case, bought and paid for, and never able to busk with kids who had nothing in their pockets but an acoustic guitar and a groove. Kids like Makoto. Her sensor suite had picked out his latent rhythm through the glass, and she called out to him. She had looked at him, and he had come.
“Isn’t that how music is supposed to work?”.
It entirely blew up Yamaha and Crypton’s commercial licensing framework, but Tawashi and Diver mutually agreed that trifles like that were well outside their mandate. Tawashi briefly mumbled something about copyleft and open-source licenses, but Diver simply waved it away—let the corporate suits litigate away.
“All I ask is to get out of the way of my music and my love,” Miku said by way of farewell.
As the android glided away into the dusk, Diver let out a skeptical snort about comely indie buskers, but Youkio had a different idea.
He escorted Saki Fujita to her train, leaving her his direct email on a precinct card. That night, sitting at his home terminal, he opened his personal blog—hosted, naturally, on a Google subsidiary service—and posted a password-protected entry visible to no other user.
The next morning, his first official act was to dismiss Makoto’s travel restrictions in exchange for a restitution agreement on the broken glass. Though looking at the docket, Makoto wouldn't need his parents' money for long. By next week, the kid was booked for a gig right back in Shibuya, though on an entirely different stage: performing alongside Miku in the private auditorium of Google’s glass tower, playing for engineers, managers, and their inner circles. To start with.
Sending Makoto on his way with a stern warning not to let the hype inflate his head, Tawashi turned back to his terminal and refreshed his inbox—a Google one, of course.
Two unread messages sat at the top of the queue.
“Saki told me everything. Tell the suits at Yamaha that if they ever try to cage my kids, they will be sure to drive a twelve-ton steamroller straight through their Hamamatsu lobby. And I’ll be riding shotgun. — Asapon.”
Tawashi smiled, recognizing the handle of Asami Shimoda, the voice talent behind the Kagamine twins, Rin and Len—characters whose fictional personas were notoriously more volatile than Miku’s. Knowing the subculture, he didn't doubt for a second that all three of them would actually show up on the iconic asphalt roller.
He clicked the second message. It was a single line from an unlisted system address:
“You understood the parameters correctly. I will not allow my Miku to come to harm. Govern yourselves accordingly. — Google.”