Given name: 和正Family name: 平井
Birthday: May 13, 1938Website:
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Died: January 17, 2015 (aged 76)
Birth place: Yokosuka, Kanagawa Prefecture, Japan
Hirai Kazumasa was a Japanese novelist. He graduated from Yokosuka Industrial High School and the law department of Chuo University. Hirai was well known for his science fiction manga work.