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Hiroyuki Hayashi

Hiroyuki Hayashi

Hiroyuki Hayashi (ハヤシヒロユキ), also known as HAYASHI, is a Japanese singer and musician. He is the vocalist, guitarist, and programmer of the Japanese rock band POLYSICS. He occasionally works as a remix artist under the alias POLY-1.


  • Stage Name: HAYASHI (ハヤシ)
  • Real Name: Hiroyuki Hayashi (ヒロユキハヤシ)
  • Postition: Guitar, Vocals, and Programming
  • Birthdate: August 8, 1978 (1978-08-08) (age 42)
  • Birthplace: Shinjuku, Tokyo, Japan
  • Blood Type: A
  • Bands: POLYSICS (1997 - Present)