Cobalt Blue

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Cobalt Blue is the story of three childhood friends—Ryoko (Masami Nagasawa), Kazuya (Shinji Rachi), and Daisuke (Seiji Fukushi)—who grow up together on a remote island of Okinawa. Ryoko’s mother, Yukiko Morishita (Misato Tanaka), is a world-renowned pianist who arrives from Tokyo to recuperate from an illness. She falls in love with a fisherman, Ryuji Nakamura, then marries him and gives birth to their daughter Ryoko shortly before passing away. Two boys, Daisuke and Kazuya, are born the same year as Ryoko, and the three children grow up like brothers and sisters. Kazuya decides to remain on the island to become a fisherman, while Daisuke is accepted into an art school in Naha (on the main island of Okinawa), and Ryoko considers leaving the island to study nursing. But during the spring of their 18th year, Kazuya sings a song of love, “Tubarama,” to Ryoko, forever changing the relationship between the three friends...

  1. Yosuke Nakagawa


  2. Yu Shibuya


  3. Makoto Itakura


  4. Yosuke Nakagawa


Top Billed Cast

  1. Seiji Fukushi

    Seiji Fukushi

    Daisuke Higa

  2. Kuranosuke Sasaki

    Kuranosuke Sasaki

    Ryuji Nakamura

  3. Shinji Rachi

    Kazuya Uehara

  4. Misato Tanaka

    Misato Tanaka

    Yukiko Morishita

  5. Shimba Tsuchiya

    Young Daisuke

Full Cast & Crew

Cobalt Blue
Cobalt Blue


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Original Title Gunjô: Ai ga shizunda umi no iro

Status Released

Release Information

  • June 27, 2009


Original Language Japanese

Runtime 1h 59m

Budget -

Revenue -



Content Score


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