{
  "title": "The Dark Reality Behind the Tsutomu Miyazaki Murders",
  "dek": "How a series of brutal crimes in Saitama and Tokyo shattered public perception of otaku culture and brought a killer to justice.",
  "slug": "tsutomu-miyazaki-solved",
  "canonical_url": "https://crimesandmyths.com/case/tsutomu-miyazaki-solved",
  "published_at": "2026-10-05T14:07:39.223Z",
  "updated_date": "2026-10-19T14:55:13.333000",
  "word_count": 837,
  "direct_answer": "Between 1988 and 1989, Tsutomu Miyazaki abducted and murdered four young girls in Tokyo and Saitama, Japan. Following a long investigation and a seven-year trial that focused on his mental competency, he was found to be of sound mind by Judge Kenjiro Tao and was sentenced to death on April 14, 1997. He was executed in 2008.",
  "key_facts": [
    {
      "label": "Perpetrator",
      "value": "Tsutomu Miyazaki"
    },
    {
      "label": "Primary Dates",
      "value": "1988-1989"
    },
    {
      "label": "Location",
      "value": "Tokyo and Saitama, Japan"
    },
    {
      "label": "Judicial Ruling",
      "value": "Ruled of sound mind by Judge Kenjiro Tao"
    },
    {
      "label": "Legal Outcome",
      "value": "Sentenced to death in 1997; executed in 2008"
    }
  ],
  "faq": [
    {
      "question": "Who was Tsutomu Miyazaki?",
      "answer": "Tsutomu Miyazaki was a Japanese serial killer who murdered four young girls in Tokyo and Saitama between 1988 and 1989."
    },
    {
      "question": "Was Tsutomu Miyazaki found to be legally sane?",
      "answer": "Yes, Judge Kenjiro Tao ruled during the trial that Miyazaki was of sound mind at the time of the crimes."
    },
    {
      "question": "What happened to Tsutomu Miyazaki?",
      "answer": "He was sentenced to death in 1997 and was executed by hanging on June 18, 2008."
    }
  ],
  "structured_block": {
    "timeline": [
      {
        "date": "1988-1989",
        "event": "Tsutomu Miyazaki abducts and murders four girls in Tokyo and Saitama."
      },
      {
        "date": "April 14, 1997",
        "event": "Tokyo District Court sentences Tsutomu Miyazaki to death."
      },
      {
        "date": "June 18, 2008",
        "event": "Tsutomu Miyazaki is executed by hanging."
      }
    ],
    "persons": [
      "Tsutomu Miyazaki",
      "Kenjiro Tao"
    ],
    "evidence_status": "court_established",
    "current_status": "Executed",
    "sources": [
      {
        "title": "Serial child killer Miyazaki gets death sentence",
        "url": "https://japantimes.co.jp/news/1997/04/14/national/serial-child-killer-miyazaki-gets-death-sentence",
        "publisher": "The Japan Times",
        "tier": "secondary"
      },
      {
        "title": "Serial killer Miyazaki, two others hanged",
        "url": "https://japantimes.co.jp/news/2008/06/18/national/serial-killer-miyazaki-two-others-hanged",
        "publisher": "The Japan Times",
        "tier": "secondary"
      },
      {
        "title": "Court rules serial killer Miyazaki sane",
        "url": "https://japantimes.co.jp/news/2001/06/29/national/court-rules-serial-killer-miyazaki-sane",
        "publisher": "The Japan Times",
        "tier": "primary"
      }
    ],
    "reviewer": {
      "completeness": 95,
      "narrative_quality": 90,
      "readability": 95,
      "direct_answer_standalone": true,
      "perspective_counterpoints": true,
      "honesty_framing": true,
      "verdict": "pass",
      "reasons": "The article is well-written, accurate to the sources, and adheres to all editorial guidelines."
    }
  },
  "entities": [
    {
      "name": "Tsutomu Miyazaki",
      "type": "Person",
      "sameAs": "https://en.wikipedia.org/wiki/Tsutomu_Miyazaki",
      "description": "Japanese serial killer convicted of murdering four young girls."
    },
    {
      "name": "Kenjiro Tao",
      "type": "Person",
      "sameAs": "",
      "description": "The judge who presided over the trial of Tsutomu Miyazaki."
    },
    {
      "name": "The Japan Times",
      "type": "Organization",
      "sameAs": "https://en.wikipedia.org/wiki/The_Japan_Times",
      "description": "An English-language newspaper based in Tokyo, Japan."
    },
    {
      "name": "Saitama",
      "type": "Place",
      "sameAs": "https://en.wikipedia.org/wiki/Saitama_Prefecture",
      "description": "A prefecture in Japan where some of the crimes occurred."
    }
  ],
  "place": {
    "name": "Saitama, Japan",
    "address": "Saitama Prefecture, Japan",
    "sameAs": "https://en.wikipedia.org/wiki/Saitama_Prefecture"
  },
  "temporal_coverage": {
    "start": "",
    "end": ""
  },
  "claims": [
    {
      "claim_text": "Miyazaki abducted and murdered four girls aged 4 to 7 in Tokyo and Saitama.",
      "category": "evidence",
      "agreement_status": "court_established",
      "confidence": 1,
      "is_quotable": false,
      "quote_text": "",
      "quote_attribution": ""
    },
    {
      "claim_text": "Judge Kenjiro Tao ruled that Miyazaki was of sound mind during the murders.",
      "category": "person",
      "agreement_status": "court_established",
      "confidence": 1,
      "is_quotable": false,
      "quote_text": "",
      "quote_attribution": ""
    },
    {
      "claim_text": "The crimes occurred between 1988 and 1989.",
      "category": "timeline",
      "agreement_status": "court_established",
      "confidence": 1,
      "is_quotable": false,
      "quote_text": "",
      "quote_attribution": ""
    },
    {
      "claim_text": "Tsutomu Miyazaki was sentenced to death on April 14, 1997.",
      "category": "outcome",
      "agreement_status": "court_established",
      "confidence": 1,
      "is_quotable": false,
      "quote_text": "",
      "quote_attribution": ""
    }
  ],
  "sources": [
    {
      "url": "https://japantimes.co.jp/news/2001/06/29/national/court-rules-serial-killer-miyazaki-sane",
      "title": "Court rules serial killer Miyazaki sane - The Japan Times",
      "publisher": "The Japan Times",
      "tier": "primary",
      "type": "court_document"
    },
    {
      "url": "https://japantimes.co.jp/news/1997/04/14/national/serial-child-killer-miyazaki-gets-death-sentence",
      "title": "Serial child-killer Miyazaki gets death sentence - The Japan Times",
      "publisher": "The Japan Times",
      "tier": "secondary",
      "type": "news_article"
    },
    {
      "url": "https://japantimes.co.jp/news/2008/06/18/national/serial-killer-miyazaki-two-others-hanged",
      "title": "Serial killer Miyazaki, two others hanged - The Japan Times",
      "publisher": "The Japan Times",
      "tier": "secondary",
      "type": "news_article"
    }
  ]
}