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Hayasaka Koumi

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KOUMI promoting "One time (2017)

Hayasaka Koumi (早坂香美) is a Japanese pop singer and idol managed by Step one. She is a member of the avex trax group callme and formerly a member of the group Dorothy Little Happy. She was originally a back-dancer for DLH before becoming a permanent member in November 2010, and she graduated the group in July 2015.


  • Stage Name: KOUMI (コウミ)
  • Birth Name: Hayasaka Koumi (早坂香美)
  • Birth Date: May 31, 1996 (1996-05-31) (age 22)
  • Blood Type: O
  • Birth Place: Sendai, Miyagi Prefecture