Content note: this piece describes the murder of a 21-year-old university student in her own home, two days before she was due to leave the country, and the thirty years her family has spent since with no name to put to the man who did it. It is a companion, in the hardest way, to the Miyazawa/Setagaya piece — where the Nagoya case answered what happens when a cold case finally breaks, this one is still waiting for that afternoon to come.
The Man in the Ocher Raincoat
Look. I want you to picture something before I tell you her name, because it is the detail that will not leave you once you know it.
It is a little after three in the afternoon on a Monday in September, in a quiet residential street in Katsushika Ward, Tokyo. It is raining, or it has just rained — enough that a man is carrying a black umbrella. He is not tall. Somewhere between a hundred and fifty and a hundred and sixty centimetres, thin, wearing an oversized coat the color of mustard, ocher, something between yellow and brown, with black trousers underneath. A neighbor sees him walking south of a particular house. Twenty-five minutes later, someone sees him again — same coat, no umbrella now — standing at the front door of that same house, looking up. Not knocking. Not moving. Just looking up at the second floor, at a nameplate with a family’s name on it, in the rain.
Inside that house is a twenty-one-year-old woman named Junko Kobayashi, and in less than an hour she will be dead, and the house will be on fire, and the man in the ocher raincoat will never be identified. Not that day. Not in the thirty years since. Tokyo police have his blood type. They have his DNA. They built a three-dimensional video reconstruction of him and, in 2025, a life-size panel of him that they can stand at a train station. What they have never had, in thirty years, is his face.
I need you to sit with that raincoat for a second, because it is the whole shape of this case. Somebody has walked past that panel. Somebody has stood next to that description in a train station and not known, or known and said nothing. He is somewhere. He has been somewhere for thirty years.
Who Junko Was
Her name was Junko Kobayashi. She was twenty-one years old. She was a fourth-year student at Sophia University, in the Faculty of Foreign Languages, majoring in English. From February to August of 1996, she worked a part-time job at a Tokyo broadcasting office in Ginza — answering phones, packaging film reels, the ordinary clerical work of a university student saving money for something bigger. She was saving for a ten-month exchange program at a university in Seattle. She was two days from leaving the country when she was killed.
She kept a diary at that job, the kind of small internal record a conscientious twenty-one-year-old keeps of a first real workplace. On one of her earliest entries, in February, she wrote that she was “painfully aware that I only cause trouble and am less than useless” — the specific, unforgiving self-criticism of someone who cares too much about doing well at something new. By her last entry that August, months into the job and days from leaving it, she had softened toward herself. She wrote that it would be hard to leave, and that she hoped she had been of even small help to everyone there. A coworker who remembered her years later described a bright, gentle smile, and said she had wondered, sometimes, whether Junko might have gone on to become a journalist — whether their paths might have crossed again, later, in the same industry.
I want you to hold that detail, because it is easy to let a thirty-year-old case flatten into a case number and a blood type. She was not a case number. She was a young woman who worried she wasn’t good enough at a part-time job and then, months later, worried about leaving the people there. She wanted to go to Seattle for ten months and come back and maybe write for a living. She had a whole life sketched out in front of her, in pencil, the way you sketch a life out at twenty-one — not fixed yet, but there, waiting to be filled in. Someone took the pencil out of her hand.
September 9, 1996. Shibamata, Katsushika Ward.
The timeline the Tokyo Metropolitan Police have reconstructed is precise almost to the minute, which tells you something about how much physical evidence this crime actually left behind. Between roughly 3:50 and 4:39 in the afternoon, in Junko’s family home in Shibamata 3-chome, Katsushika Ward, she was bound — her mouth and hands wrapped in adhesive tape, her ankles tied with pantyhose using a specific, deliberate knot — and stabbed in the neck with a sharp, single-edged blade, somewhere between eight and eleven centimetres long. The house was then set on fire around her.
Whoever did this left behind an unusual amount of physical trace for a case that has never been solved. From a burned matchbox and a futon in the house, investigators recovered a male DNA profile and blood type A. The tape itself was traceable to a specific manufacturer — an industrial fabric adhesive tape, fifty millimetres wide, twenty-five metres long, made after January 1994 at a factory in Shizuoka, the kind of tape that sold for seven or eight hundred yen and was typically used for packaging. Caught in its adhesive were fragments of plant matter, wood, and dog hair. In 2025, nearly three decades later, a fresh forensic pass over the blood-stained matchbox found marks on it consistent with a work glove’s grain pattern — a new detail, this many years in, still being pulled out of the same physical evidence.
No fingerprints were ever recovered. He was careful about that, at least, even if he was not careful about anything else.
Eighty Thousand Investigators, One Nameless Man
Here is what the Tokyo Metropolitan Police have done with all of that evidence over thirty years: everything they could. This is not a case where the investigation stalled from neglect. By some counts, more than eighty thousand investigator-deployments have gone into this file across the decades. Tens of thousands of people have been directly questioned. Well over a thousand tips — by the case’s twenty-ninth anniversary in September 2025, more than seventeen hundred — have come in from the public and been run down. A special investigation headquarters has stood at Kameari Police Station for thirty years, still active, still taking calls.
What they have never had is a name to hold that DNA profile up against. Japan does not run the kind of national, searchable DNA database that the United States or the United Kingdom maintain. A profile like the one taken from that matchbox is only useful once police already suspect someone specific enough to ask for a voluntary sample. Without that, it sits — a full, precise, waiting answer to a question nobody has been able to ask the right person yet.
There is a reward attached to this case, and it has grown over the years: three million yen from the public reward system, five million more from a private cooperating association, eight million yen total — more than fifty thousand US dollars — for information that leads to a resolution. As of this writing, that reward period has been extended through September 8, 2026. Thirty years, almost to the week, from the afternoon it happened.
And because of a change in Japanese law in 2010 — the same abolition of the statute of limitations on murder that a Nagoya widower helped push through, the one that let his own wife’s killer still be arrested twenty-six years later — this case can never expire. Whoever the man in the ocher raincoat is, he can be tried the day he is finally named, whether that is next year or the year he dies. Time is not on his side in the way it once would have been. It is simply, so far, not working against him either.
The Sister Who Is Still Waiting
I want to introduce you to Akiko Kumata, because she is the one still standing in front of Japanese cameras every September, and because what she says is not the language of a true-crime case file. It is the language of a sister.
Akiko is fifty-four now. On the twenty-ninth anniversary of her sister’s death, in September 2025, she said this: “I want to see her one more time.” She said this: “I grow older while Junko remains frozen in time. I wish we could start over from then.” And she said the sentence that I think explains, better than any forensic detail in this piece, why this family has not stopped for thirty years: “Without the perpetrator’s arrest, I don’t know where to direct my anger, and I cannot move forward.”
Sit with that sentence. It is not about revenge, not really. It is about a woman who has had nowhere to put thirty years of a specific, unspent fury, because the person that fury belongs to has never had a face. Grief moves. Anger without a target does not. It just sits in the chest, year after year, with nowhere to go.
Every September, on or near the anniversary, Junko’s family and Tokyo police return to the site of the house that no longer stands the way it did, lay flowers, and renew the public appeal for information. They have been doing this every year since 1996. They did it again in September 2025. They will very likely do it again in a few days from when I am writing this, on the thirtieth anniversary, in September 2026.
Thirty Years, No Ending
I am not going to pretend this piece gets to end the way the Nagoya piece did. I don’t get to tell you that somebody walked into a police station. I don’t get to give you a widower’s face clearing like weather. I have to tell you the truth, which is that as I write this, Junko Kobayashi’s killer has never been named, has never been arrested, and has spent thirty years as a free man somewhere in or around Tokyo, or somewhere much farther away, living whatever life a man lives after doing that to a twenty-one-year-old two days from the life she’d planned for herself.
But I told you the Nagoya story first, in a different piece, for a reason, and I want to bring it back here. That case sat exactly where this one sits now — DNA on file, a killer with no name, a family who would not let it go quiet — for twenty-six years. And then, on one ordinary autumn afternoon, none of that mattered anymore, because a sixty-nine-year-old woman decided to consent to a DNA test she had refused three times before.
Somewhere, there is a man who knows he owns a coat the color of mustard, or used to. Somewhere, there is a man whose blood type is A and who was, one rainy September afternoon in 1996, standing in front of a house in Shibamata staring up at a nameplate. He is someone’s neighbor. He may be someone’s father, someone’s husband, someone’s quiet coworker who has never once mentioned that he used to live in Katsushika. He is not young anymore. Whatever he was at the time, he has spent thirty years since aging into whoever he is now, carrying this the entire time, the way Kumiko Yasufuku carried Nagoya’s case for twenty-six years before one afternoon broke her open.
Cold does not mean dead. I’ve said that once already on this site and I meant it both times. This case is still, technically, completely solvable. The DNA is sitting in an evidence room in Tokyo right now, waiting for exactly one thing: a name to test it against.
Say her name once, please, before you close this tab. Junko Kobayashi. She was twenty-one. She wanted to go to Seattle and maybe become a journalist. She worried she wasn’t good enough at a part-time job and then, months later, worried about leaving the people there. Her sister is fifty-four now and still doesn’t know where to put her anger. Her killer has had thirty years of ordinary life that he took directly from the ordinary life she should have had instead. If you are in Tokyo, or if you know anyone who was in Katsushika Ward in September of 1996, the number for the Kameari Police Station special investigation unit is still active. Somebody, somewhere, knows something about that raincoat. It is not too late for that to matter.
Sources
- Tokyo Metropolitan Police Department (警視庁), official case page, “柴又三丁目女子大生殺人放火事件,” Kameari Police Station special investigation headquarters — case facts, timeline, evidence, reward, contact line.
- 日本事件データベース (jiken-db.com), “上智大生・小林順子さん殺人放火事件 — 30年を前に残るDNAと不審な男” — forensic detail on tape manufacture, weapon, matchbox re-analysis, suspect sighting descriptions.
- テレ東BIZ (txbiz.tv-tokyo.co.jp), 29th-anniversary coverage, September 2025.
- 時事ドットコム (Jiji Press), “「もう一回会いたい」 被害者姉、事件解決祈る,” September 9, 2025 — sister Akiko Kumata’s direct quotes.
- 東京新聞 (Tokyo Shimbun), workplace profile of Junko Kobayashi via a former coworker’s recollection, September 2025.
- NHK News Web, 29th-anniversary anniversary-observance coverage, September 2025.
- Japan Today, “29 years after murder of Sophia University student, father and police appeal for information,” September 2025.
- Tokyo Reporter, “Family of ’96 murder victim seeks help of public in solving case,” coverage of 2019 leafleting and father Kenji Kobayashi’s public statement (English-language reporting; treated as secondary to the Japanese-language sources above).
If you are reading this from Japan and you know anything about a man in an ocher raincoat near Shibamata 3-chome, Katsushika Ward, on the afternoon of September 9, 1996 — the Kameari Police Station special investigation headquarters is still open, thirty years later, waiting for exactly that call.