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The body of a person who died an unnatural death is discovered encased in mortar like concrete in the basement of an abandoned building. Why was the person murdered this way? The next day, the investigation task force receives a phone call from the criminal who calls himself Tremi during a meeting to discuss the investigation of the case. Then, in a short time after her transfer to the First Investigative Division, Kisaragi Toko becomes the negotiator. Tremi mocks and provokes the police while offering hints regarding the murder. A second murder soon occurs just as Tremi had warned. The victim's head has been covered with concrete as they had expected. What is the criminal's motive and why is the criminal fixated with concrete? The criminal's surprising actual target soon emerges...

  1. Asami Kazushi


Series Cast

  1. Fumino Kimura

    Fumino Kimura

    Kisaragi Toko

    5 Episodes

  2. Munetaka Aoki

    Munetaka Aoki

    Takano Hideaki

    5 Episodes

  3. Yasunori Danta

    Yasunori Danta

    Kamiya Taichi

    5 Episodes

  4. Ikkei Watanabe

    Ikkei Watanabe

    Hayase Yasuyuki

    5 Episodes

  5. Takehiro Hira

    Takehiro Hira

    Kadowaki Hitoshi

    5 Episodes

Full Cast & Crew

Last Season

Stone's Cocoon

Season 1

2015 | 5 Episodes

Season 1 of Stone's Cocoon premiered on August 16, 2015.

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Stone's Cocoon
Stone's Cocoon


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Original Name 石の繭

Status Ended


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  • 14


    Content suitable for viewers over the age of 14.

Type Miniseries

Original Language Japanese

Runtime 60m



Content Score


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