TrueCrime: Takahiro Shiraishi

Chapter 1

I remember that Halloween morning in 2017 with crystal clarity. I was in my office when the call came in: police had discovered a 'house of horrors' apartment in Zama City, near Tokyo. Arriving at the scene, I saw officers erecting blue tarps to conceal the area around a small apartment building. Behind that door, reality surpassed any nightmare: nine dismembered bodies, with up to 240 bone fragments scattered across portable coolers and toolboxes, sprinkled with cat litter in a desperate attempt to mask the stench. The scene was straight out of Dante's Inferno. Never in my career had I imagined confronting something like this. I walked down the narrow hallway to the apartment. The air was thick, saturated with a metallic sweetness that neighbors had noticed for days without understanding its source. Inside, the scene was silent yet deafening in its horror: in the dim light of a tiny bathroom stood several stacked plastic containers. When opened, we found human heads, legs and arms intermingled. The cat litter scattered over the remains barely dulled death's acrid smell. I remember a young officer beside me covering his mouth in disbelief. Through years of forensic work, I'd witnessed human evil, but nothing as macabre as this. When they led the suspect away, he desperately tried covering his face with his hands, avoiding cameras【15†】. That thin, bespectacled man with an utterly ordinary appearance was Takahiro Shiraishi. At 27, media would soon dub him 'the Twitter Killer' for contacting victims through the platform. I'd been summoned as a forensic psychologist to assist authorities; my task would be deciphering what lurked behind those seemingly harmless eyes now avoiding the press. I'll never forget when one detective, emerging pale-faced from the apartment, muttered: 'We've got nine bodies... nine.'

Chapter 2

Days later, I began investigating Shiraishi's background, piecing together his life from police reports, interviews, and any traces that could profile his psyche. How does someone commit such atrocities? At first glance, his biography revealed no obvious trauma. Born October 9, 1990, he grew up in an average Japanese family. As a child, he was described as reserved yet sociable—even participating in school baseball and track. He wasn't exceptional in any particular way: 'Not a gloomy kid, just another student,' recalled a former classmate. Yet deeper digging revealed disturbing signs. An elementary school acquaintance told press that Shiraishi and friends played choking games for fun: 'He once lost consciousness during strangulation play,' the witness revealed years later. Perhaps, in hindsight, this morbid childhood game foreshadowed something dark within. After graduating high school in 2009, Shiraishi briefly entered conventional employment. He landed a full-time supermarket job but quit after two years. That normalcy didn't last; by 22, he was immersing himself in Tokyo's underworld. Becoming a 'scout' in Kabukichō—the capital's largest red-light district—he recruited young women for brothels and clubs. Ironically, his persuasion skills—the same ones later used to lure victims—made him valuable in this sordid trade. But even here, his behavior raised alarms: industry peers called him a 'creepy stalker.' One even shared his photo online warning: 'Beware this scout.' In February 2017, Shiraishi was arrested for illegal recruitment—having ensnared a girl knowing she'd be forced into prostitution—receiving a suspended sentence. Once again, he slipped through with minimal consequences. Some tried seeing humanity in him. His father, an auto parts designer, reportedly shared a close bond with Takahiro: neighbors said they often dined and drank together, with the son sometimes helping at the auto shop. Shiraishi's mother and younger sister had left years earlier, so father and son lived alone, strengthening their connection. An ex-girlfriend, who dated him until summer 2016, described him as 'unusually gentle, someone who never got angry with women.' She recounted how when she tried breaking up, Shiraishi hugged her begging 'Don't leave,' revealing profound abandonment fears. Of course, none of this excuses what followed, but it painted a portrait of a young man craving affection, desperate to avoid loneliness. By mid-2017, a shift occurred in his demeanor. That June, Takahiro confessed feeling empty to his father: 'I don't know why I'm alive,' he said. This chilling statement went unnoticed at the time. Soon after in August, Shiraishi announced he'd met 'the love of his life' and urgently needed independence. It was a calculated lie—his true urgency was different. His trusting father agreed to cosign, helping rent a place. Thus on August 22, 2017, Takahiro moved into a 145-square-foot apartment in Zama, Kanagawa, outside Tokyo. That cramped studio would soon become multiple crimes' macabre stage. The entrance door—which I myself later crossed with investigators—opened to Shiraishi's sordid world, far from his father's or anyone's restraining gaze.

Chapter 3

Settled in Zama, isolated from all non-virtual connections, Takahiro Shiraishi unleashed his sinister plans. The internet became his hunting ground. During those months, Twitter served as a refuge for many depressed Japanese youth; in a country where suicide remains taboo, social media offered anonymous outlets for despair. Shiraishi knew this—and was ready to exploit it. He created at least five Twitter accounts under various aliases. Two revealed opposing strategies: one portrayed him as a grieving victim, the other as an executioner. The first, under a handle translating to 'I Want To Die,' posted melancholic messages. On August 25, 2017, he wrote: 'I want to forget everything. I want to disappear,' projecting a lost soul seeking miserable companionship. The second account called him a 'hanging expert,' adopting a dark counselor role. 'I want to share my knowledge about hanging,' his profile announced, *'I truly wish to become a source of strength for all who suffer. If you're at a dead end, please consult me.' Those words, read in hindsight, send chills. Shiraishi marketed himself as a 'professional executioner,' willing to help death-seekers end their lives. It was a macabre yet tragically effective lure. Shiraishi spent hours scouring the web for vulnerable prey. He wove his web around the hashtag '#SuicideRecruitment,' used by Japanese Twitter users expressing death wishes. Here he found potential victims: mostly young women consumed by depression. He'd DM them, whispering final temptation: 'Let's die together.' Offering to fulfill their ending while accompanying them. To someone drowning in loneliness and suicidal thoughts, Shiraishi's proposition might sound like understanding rather than a death trap. 'Those wanting to die just wish to be accepted as they are without judgment,' a suicide prevention expert later explained, noting how predators like Shiraishi gain trust by feigning empathy with self-destructive desires. Shiraishi's modus operandi was coldly calculated. When girls responded to his siren songs, he took precautions against escape. He'd arrange meetings near their homes, presenting himself as someone ready to 'flee the world' together. Thus victims became committed before arriving: they'd travel to Zama together, distancing them from familiar surroundings to minimize last-minute regrets. During transit, I imagine Shiraishi chatting softly, perhaps appearing understanding while inwardly awaiting attack. Inside his oppressive studio, next steps unfolded: he'd offer alcohol, anti-anxiety meds and sleeping pills 'to relax.' Many arrived distressed, conflicted about dying; he'd coax them into drinking and drugging, sapping strength and willpower. It was perverse preparation for what followed. As he later confessed, Shiraishi killed victims at the earliest opportunity without unnecessary delays. Exact sequences exist only in his twisted mind, but evidence and statements allow reconstruction. Typically, once victims were intoxicated or sedated, Shiraishi exploited their vulnerability. He'd strangle them from behind with rope, applying full hand strength and body weight until movement ceased. Some may have been struck first to stun—Japan's Justice Minister later mentioned several were 'beaten and strangled'—but asphyxiation was primary. He'd sexually assault unconscious or dying women; satisfying his perversions. He also stole their money—sometimes mere bills, other times tens of thousands of yen. His motivation, as revealed, was twofold: sex and money. 'He discovered this method let him earn without working while satisfying sexual desires,' prosecutors stated about his first murder. If victims reconsidered dying, that didn't deter him: detecting doubts or escape attempts, he'd forcibly subdue and kill them regardless. To Shiraishi, they'd ceased being human; they were means for enjoyment in a macabre game where only he made rules. Between August-October 2017, Takahiro Shiraishi committed a chilling murder spree. He confessed to killing one in August, four in September and four in October—usually the same day he contacted them. Eight victims were young women (three high schoolers); most aged 15-21 except one 26-year-old. Their real names were never publicly released, partly from respect, partly because Shiraishi couldn't be bothered learning them before ending their lives. The ninth victim was a 20-year-old man—the sole male—whose path fatally crossed the killer's: he was the boyfriend (or close friend) of a missing girl who'd come searching. Shiraishi saw him as a dangerous loose end and eliminated him too—strangling him when he arrived at the apartment seeking his beloved, making him an involuntary participant in this twisted case. Shiraishi's coldness recounting these events years later still chills me. One prison interview moment remains unforgettable. We sat in a stark room separated by a metal table. Shiraishi spoke with unsettling calm, barely gesturing. His glasses couldn't conceal empty, indecipherable eyes. When I asked about disposing of bodies—hoping for remorse—his response was almost pedagogical. Tilting his head slightly like someone sharing a learned lesson, he said: 'It was hard initially. The first body took three days, but from the second I could do it in one.' He said it unflinchingly, as if discussing vocational training. I felt chills hearing it. In that moment, I understood I faced someone who'd normalized horror. 'Eventually I got used to it,' he added emotionlessly about multiple murders, his voice utterly devoid of empathy for those whose lives he'd stolen.

Chapter 4

After each murder, Shiraishi's macabre work had barely begun. He'd meticulously planned body disposal to conceal evidence. With each victim, he'd drag the corpse to his tiny apartment's bathroom and proceed to dismember it with sharp tools. The scene was nightmare-worthy: bloodstained tiles, handsaws, kitchen knives, scissors, wood saws, ropes—all later found with dried blood residue. 'I undoubtedly cut up bodies in my bathroom to destroy evidence,' Shiraishi openly admitted to investigators. Initially it took time—his first attempt required days—but he soon perfected this gruesome technique. Shiraishi confessed to disposing flesh and organs as common trash, bagging them in neighborhood dumpsters for collection. He exploited local waste routines, mixing human remains with household garbage. 'I disposed of their flesh and organs like trash,' he stated impassively. But bones posed another issue: fearing large bones (like skulls or femurs) might arouse suspicion, he made the horrifying decision to retain them. 'I kept bones fearing capture,' he explained. Using three portable coolers and five plastic storage boxes, he concealed them. When police thoroughly inspected the apartment, they found human remains in seven containers: decapitated heads, amputated arms and legs carefully arranged. Shiraishi had stacked coolers and boxes in his tiny room, literally living among victims' remains. That forensic scene's gruesomeness remains etched in my memory through photos and testimony. To mask stench, Shiraishi covered body parts with cat litter—that absorbent gravel used for feline waste. He sprinkled it over and around remains, hoping to neutralize decomposition's odor. It proved futile. As days passed, a nauseating stench permeated the building. Neighbors complained about a 'persistent rotten-meat stench' emanating from his apartment. Yet Japan's culture respects privacy to extremes; nobody confronted Shiraishi directly. Only later would they horrifyingly understand that infernal smell's source. Several residents reported noticing nothing unusually suspicious from Shiraishi's apartment—astonishing given the crimes' scale. He lived on the second floor of a two-story, twelve-unit building with paper-thin walls, yet remained unnoticed. 'It was odd how his bathroom fan ran constantly,' one neighbor remarked post-arrest. This detail later made sense: Shiraishi kept the fan running to expel putrid odors. Retrospectively, a neighbor recalled frequently seeing him carrying heavy trash bags to communal dumpsters. Nobody imagined those bags contained human remains mixed with regular waste. Shiraishi relied on this willful environmental blindness: as long as he politely greeted neighbors and took out trash on schedule, nobody intruded on his privacy. This continued until a desperate brother's persistence tore through the anonymity shielding the killer.

Chapter 5

By October 2017, Takahiro Shiraishi felt virtually untouchable. He'd murdered nine people in two months. Several were reported missing across prefectures (Tokyo, Kanagawa, Saitama, Gunma, Fukushima), but puzzle pieces hadn't connected yet. It would be the elder brother of his final victim who, with determination and cunning, initiated the Zama monster's downfall. This young man noticed his 23-year-old sister's disappearance from Hachiōji (Tokyo) in late October. Desperate, he hacked her Twitter account for clues. There he found disturbing messages: his sister had been interacting with a stranger offering suicide assistance. Suspecting this individual might be involved, he decided to set a trap. Either posing as a suicidal girl interested in the stranger's services or finding someone who'd had suspicious contact with Shiraishi and was willing to cooperate. Indeed, a woman who'd previously interacted with Shiraishi volunteered as bait. Her bravery was remarkable—she might have been walking into the lion's den. This woman—identity protected, sometimes referred to as 'Yumi'—began conversing with Shiraishi online, expressing interest in 'dying together.' Overconfident from past successes, Shiraishi arranged a meeting, unaware it would be his last. Alerted police, now collaborating with the brother, prepared a sting operation. On October 30, 2017, Shiraishi left his apartment for the station where he'd arranged to meet this 'new victim.' It wouldn't be an ordinary day: plainclothes officers closely tailed him. That evening, after the meeting, detectives moved in. They followed Shiraishi back to his Zama apartment with the 'bait' still accompanying him. We can imagine the tension when officers finally identified themselves. They knocked or perhaps intercepted him at entry. 'Where's the missing girl?' they urgently demanded, fearing they might be too late. Shiraishi's response was chillingly calm: he quietly pointed to a portable cooler near the entrance and said: 'In that box.' Officers exchanged stunned glances. Opening the indicated container... there, wrapped in plastic darkness, lay a young woman's severed head. It was the missing sister. And she wasn't alone. That night, police found remains of eight women and one man scattered throughout the small apartment. Digital Twitter trails had led police straight to the serial killer's door. Takahiro Shiraishi was immediately arrested. Outside, news spread like wildfire. When images emerged of the handcuffed suspect surrounded by police, many couldn't believe this ordinary-looking man—partially hooded and masked during transport—was responsible for such atrocities. Japan plunged into horrified fascination. Across social media and television, there was only one topic: the Twitter Killer had been caught. I remember arriving at Tachikawa Police Station—headquarters for Tokyo District Court's branch handling the case—hours post-arrest as Shiraishi began confessing. I witnessed his first formal interrogation as a professional observer. Astonishingly, he admitted everything unresistingly. 'All nine, yes. I killed them,' he declared with unsettling calm, almost relief. No persuasion or confrontation was needed: Shiraishi confessed immediately. Later I'd learn he even told lawyers denial was pointless. Perhaps, caught red-handed (quite literally), he recognized inescapability. Or maybe, in his disturbed mind, he craved infamous recognition for his acts. The ensuing investigation was intense. All victims—from various provinces—were identified. Their families, who'd desperately reported loved ones missing, received the worst possible news. Japanese society reeled with each media revelation. How was this possible? How could a killer so easily find victims via social media? Public debate ignited swiftly. Some demanded Twitter accountability for unmonitored suicidal posts; indeed, within four days of the case breaking, Twitter implemented new policies prohibiting 'promoting or encouraging suicide/self-harm.' The government also acted: then-Chief Cabinet Secretary Yoshihide Suga announced considerations for stricter regulations on suicide-related websites. He mentioned strengthening support for youth expressing online despair, helping them find aid rather than predators. However, mental health experts cautioned nuance. 'We shouldn't simply shut down this escape valve,' they warned, noting how Japan's depression silence pushes many to anonymously vent online, and closing these channels might further isolate the suicidal. The Shiraishi case painfully exposed this reality: victims sought online understanding and found a killer. 'Perhaps they thought he was the only one who'd truly listen,' suicide prevention advocate Akiko Mura reflected sadly.

Chapter 6

Takahiro Shiraishi's trial began three years later in September 2020 amid great anticipation. I remember entering Tachikawa Court's chamber seeing Shiraishi in the dock: dressed in a dark suit, somewhat thinner from prison, but with the same impassive expression. Nothing remained of the shy boy his ex described, nor the pleading lover; before us stood an empty man whose presence raised goosebumps. Victims' families occupied front rows, restrained anguish etched on their faces. Some silently sobbed as prosecutors read the horrifying charges aloud. Shiraishi's defense strategy surprised many. His lawyers argued most victims had given 'consent' to be killed. This thesis hinged on their public suicidal expressions and supposedly seeking death assistance. Legally, they urged citizen judges to consider 'consensual homicide'—a lesser charge in Japan carrying reduced penalties. They even requested additional psychiatric evaluations, implying Shiraishi might've been mentally unstable during crimes. But this defense was doomed from the start—perhaps even the lawyers knew it. Against all expectations, Takahiro Shiraishi pled complete guilt. At the September 30, 2020 hearing when asked to respond to charges, he clearly stated: 'I have no rebuttals to prosecution arguments.' It was a plain, unconditional admission. I remember courtroom murmurs. Instantly, Shiraishi undermined his own defense. He wanted full culpability. Perhaps seeking maximum sentence; perhaps, in his distorted view, this was retaining some control over fate. Prosecutors meanwhile harshly described his acts as 'premeditated and atrocious,' emphasizing how he deceived vulnerable people before raping, robbing and killing them. They listed each victim's home prefecture, ages (15, 17, 19... up to 26), demonstrating his deliberate pattern targeting the youngest and most fragile. They revealed how after his 2017 prostitution arrest, Shiraishi returned home deciding he 'wanted to earn without working like a pimp,' but instead of sexually exploiting women, chose exploiting their death wishes. Coldly, they detailed his methods: five Twitter accounts luring suicidals; 'Let's die together' messages; rope strangulations; postmortem rapes; stolen money totaling hundreds of thousands of yen; mutilated bodies erasing evidence; one young man killed simply for inquiring about his friend. The narrative was so ghastly that jurors clenched fists or shed tears. Throughout trial, Shiraishi remained impassive. He offered no apologies nor showed remorse. He only spoke when directly questioned, giving brief, sometimes cynical answers. When a judge asked his motive, he reiterated sexual satisfaction and greed. Human life seemed valueless to him—mere objects for pleasure. Observing from my designated expert corner, I pondered his mind's impenetrability. Not one spark of empathy? Apparently not. Finally, on December 15, 2020, the verdict came. The courtroom tensed. Shiraishi was convicted on nine counts of premeditated murder, rape, robbery and other charges. The court wholly dismissed consent notions. The judge was unequivocal: death penalty. In Japan, executions are by hanging—this would be Takahiro Shiraishi's fate. Hearing sentencing, Shiraishi didn't blink. Not one flicker crossed his face. Instead, he nodded slightly. Later it emerged he refused any appeals, despite lawyers initially announcing they'd appeal based on contested consent claims. Shiraishi publicly declared (through representation) he accepted sentencing without prolonging proceedings. Thus his death sentence was finalized January 2021. 'I wasn't nervous about the verdict—it was obvious,' he'd later remark from prison, showing disturbing acceptance of his fate. One detail caused media uproar amid this cold judicial epilogue. Post-trial, Shiraishi made an unusual prison statement: he wanted to marry before execution. 'I want to meet a normal girl and marry,' he said, expressing desires for a wife while awaiting death. This stunned many. Was it provocation? A trapped man's escapist fantasy? Personally, when I asked during our final conversations, he calmly repeated wanting a 'normal life,' as if he hadn't destroyed nine normal lives. This revealed astonishing self-deception capacity. Shiraishi could rationally accept execution while fantasizing about mundane experiences—falling in love, marrying—ignoring his monstrous acts. He never showed genuine remorse. Not once did he speak of victims except to describe his actions. Not one flicker of guilt over immense pain caused to families.

Chapter 7

In Japan, death sentences often involve long waits; condemned prisoners spend years—sometimes decades—in solitary confinement's shadows, unaware of their final day. Takahiro Shiraishi would be no exception. During this time, he remained in Tokyo Detention Center with limited visits. On the morning of June 27, 2025—nearly eight years post-crimes—Shiraishi was finally led to the gallows. He was 34. In a secret execution—as per Japanese tradition where inmates are notified hours beforehand—he was hanged to death. Thus ended the 'Twitter Killer's' life without ceremony or external witnesses beyond a handful of officials. Japan resumed capital punishment after nearly three execution-free years with him. Hearing the news that morning, I felt strange relief mixed with sadness. Relief because justice was served for those stolen young lives; sadness because, as a human and psychologist, it's devastating witnessing how deep darkness can run in a person. The night before execution, Justice Minister Keisuke Suzuki signed the final order after 'careful case review.' Suzuki told press Shiraishi had acted from 'extremely selfish motives,' causing 'great social shock and unrest.' Indeed, few criminal cases have shaken contemporary Japan so profoundly. The minister listed horrific facts: rape, robbery, murder; nine victims strangled, dismembered, boxed, with parts discarded as trash. 'After much deliberation, I ordered execution,' he concluded. The case's severity permitted no clemency. Japanese society largely agreed. Unlike some nations, Japan maintains strong public support for capital punishment. A 2024 government survey showed 83% consider death penalty 'inevitable' for certain cases. And if any case reinforced this, it was Shiraishi's. I recall interviewing victims' families post-2020 sentencing; several wanted 'the monster to pay with his life.' While execution couldn't return loved ones, it at least legally closed a chapter of immense pain. I've often wondered what conclusions to draw. In my nightmares, I still sometimes see that dark Zama apartment, the boxes filled with remains, Shiraishi's inscrutable gaze across the table. Was Takahiro Shiraishi born a psychopath, or did society somehow create him? This question may never be fully answered. His case revealed multiple systemic failures: early mental illness detection gaps, social isolation, lacking safe channels for youth to seek help without judgment. It also showed social media's dangers yet limitations: while Twitter became nine innocents' death trap, it also provided key clues leading to his capture. As a forensic psychologist who lived this process, I'm left with complex tragedy's lessons. I've seen evil's worst face alongside justice fighters' solidarity—from the brother who never stopped searching for his sister to the brave woman who served as police bait. Takahiro Shiraishi's story—the 'Twitter Killer'—is now an indelible part of Japan's criminal folklore. His name became synonymous with lethal online deception and realized nightmares. Perhaps time will blur details in collective memory, but his crimes' echoes will continue warning us about darkness lurking behind screens or the most ordinary faces. Personally, I'll never forget those nine prematurely extinguished lives. Each victim sought understanding during their lowest hours and instead found a predator. This thought weighs heavily on my soul. My only comfort is knowing justice ultimately prevailed. Takahiro Shiraishi paid with his life. And while nothing can fill families' voids, the world will remember who the true victims were—and who the executioner was. In my memories, this case remains a grim reminder of how fragile the line can be between human despair and absolute evil.