The story begins with Hanabi, a sixth-grade girl who is neither an adult nor a child. She deals with issues such as accidentally witnessing her homeroom teacher kissing, and worrying about experiencing physiological changes before her friends. The series depicts a 12-year-old girl's innocent worries and first love.

  1. Maita Nao


  2. Masaki Oozora


  3. Fumi Tsubota


Series Cast

  1. Ai Kakuma

    Ai Kakuma

    Hanabi Ayase

    24 Episodes

  2. Juri Kimura

    Juri Kimura

    Yui Aoi

    24 Episodes

  3. Tetsuya Kakihara

    Tetsuya Kakihara

    Ayumu Tsutsumu

    24 Episodes

  4. Sayuri Hara

    Sayuri Hara

    Marin Ogura

    24 Episodes

  5. Soma Saito

    Soma Saito

    Yuuto Takao

    24 Episodes

  6. Shun Horie

    Shun Horie

    Kazuma Hiyama

    12 Episodes

  7. Shinnosuke Tachibana

    Shinnosuke Tachibana

    Inaba Mikami

    12 Episodes

  8. Taishi Murata

    Taishi Murata


    12 Episodes

Full Cast & Crew

Last Season

12-sai.: Chicchana Mune no Tokimeki

Season 2

2016 | 12 Episodes

Continue follow story season 1 Opening Theme "Ano ne, Kimi dake ni" by AOP (Member: Kei Tomoe, Yuuki Hirose, Saori Ogino, Risa Sakurana, Yui Fukuo and Aoi Mizuki). Ending Theem "Yuuki no Tsubasa" by Machico.

View All Seasons

12-sai.: Chicchana Mune no Tokimeki
12-sai.: Chicchana Mune no Tokimeki


Original Name 12歳。~ちっちゃなムネのトキメキ~

Status Ended


Type Scripted

Original Language Japanese


Content Score


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