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Exploring the world's “why?” questions with AI.

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Japan & Society

Articles examining Japanese society, customs, institutions, public behavior and social trends. Designed for readers who want to understand not only what happens in Japan, but why it happens.

【完結編】警察は犯人を知っていたのか?――三億円事件、57年間の沈黙
Japan & Society

Did Police Already Know the Culprit? Japan’s ¥300 Million Robbery, 57 Years On

What if the police knew who committed Japan’s most infamous unsolved robbery almost from the beginning? Years ago, I heard…

tokiwo2026-10-232026-10-16
3億円は父親が燃やしたのか?――煙突の煙と消えた紙幣の謎
Japan & Society

Did the Suspect’s Father Burn ¥300 Million? The Chimney Smoke Mystery

What happened to the money stolen in Japan’s notorious ¥300 million robbery? On December 10, 1968, a man disguised as…

tokiwo2026-10-222026-10-22
犯人は事件5日後に死んでいた?――三億円事件と警察官の息子
Japan & Society

Did the Robber Die Five Days Later? Japan’s ¥300 Million Mystery and a Police Officer’s Son

On December 10, 1968, a man disguised as a motorcycle police officer stopped a cash transport car in Fuchu, western…

tokiwo2026-10-212026-10-16
一家を殺すつもりだったとされる男に、なぜ手紙を送り続けたのか――西口彰と古川泰龍、逮捕後の奇妙な関係
Japan & Society

Why Did Tairyu Furukawa Keep Writing to Akira Nishiguchi, the Killer His Family Exposed?

On January 3, 1964, Japanese serial killer Akira Nishiguchi was arrested at the home of religious activist Tairyu Furukawa in…

tokiwo2026-10-182026-10-16
警察官21人が包囲、なのに室内は0人!?――西口彰逮捕の夜、警察は何をしていたのか
Japan & Society

21 Police Officers Outside, None Inside: What Went Wrong in Akira Nishiguchi’s Arrest?

On January 3, 1964, Japanese police arrested Akira Nishiguchi, a fugitive responsible for five murders, at the home of religious…

tokiwo2026-10-172026-10-15
大学教授、弁護士、そして5人殺害――西口彰は78日間、どうやって日本中を騙し続けたのか?
Japan & Society

Professor, Lawyer, Five Murders: Akira Nishiguchi’s Bizarre 78-Day Crime Spree

A con artist usually wants people to hand over their money. Akira Nishiguchi was doing something considerably more disturbing. Over…

tokiwo2026-10-162026-10-16
大人が信じた偽弁護士を、少女はなぜ疑った?――連続殺人犯・西口彰を見抜いた夜
Japan & Society

The Adults Trusted a Fake Lawyer. Why Did a Fifth-Grader Suspect Him? — The Akira Nishiguchi Case

On January 2, 1964, a man claiming to be a lawyer from Tokyo visited the home of Tairyu Furukawa, a…

tokiwo2026-10-152026-10-15
紙幣をスキャンしたらどうなる? プリンターは記憶するのか、コピーは犯罪なのか
Japan & Society

What Happens If You Scan a Japanese Banknote? Printers, Storage, and the Law

What happens if you place a Japanese ¥10,000 banknote on the glass of a home multifunction printer and press “Scan”?…

tokiwo2026-10-032026-09-29
トクリュウはなぜ捕まえにくい? 実行犯を逮捕しても終わらない犯罪モデル
Japan & Society

Why Is Japan’s Tokuryu So Hard to Dismantle?

Traditional organized crime is relatively easy to imagine. Police arrest someone at the bottom, work their way upward, and eventually…

tokiwo2026-09-302026-09-28

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Editor Profile

さすらいトキヲ Tokiwo Sasurai
Former magazine writer and web editor. I develop articles around the everyday questions and social issues that make me stop and ask, “Why?” I use AI as a supporting tool for research, organization, and image creation, then review the content before publication. Each article is edited with my own experience, observations, and perspective added to the final piece.
YOUTUBE @sasuraibito_retro X @sasuri_retro インスタ @sasurai_retro
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