Hiromasa Shirai (白井 宏昌 is a Shirai Hiromasa)Japanese art director.
Shirai joined Toho sometime prior to 1959 through a friend from art school, working first on the film The Three Treasures. He worked closely alongside Yasuyuki Inoue, drawing blueprints for miniatures before helping to decorate sets as a regular art assistant in later years. He continued to work for the company until at least 1970, likely departing following Inoue's pursuit of a freelance career in 1971.
Assistant special effects art director
- The Three Treasures (1959) [with Yasuyuki Inoue, Yoshio Irie, Toshiro Aoki]
- The War of the Gargantuas (1966) [with Yoshio Irie, Shun Suganuma, Takeharu Ikebuchi, Toshiro Aoki, Mutsumi Toshima, Hiroshi Komura, Jiro Shirasaki]
- Ebirah, Horror of the Deep (1966) [with Takeharu Ikebuchi, Toshiro Aoki, Mutsumi Toshima, Hiroshi Komura, Jiro Shirasaki]
- Destroy All Monsters (1968) [with Toshiro Aoki, Mutsumi Toshima, Hiroshi Komura, Jiro Shirasaki]
- Latitude Zero (1969) [with Toshiro Aoki, Hiroshi Komura, Jiro Shirasaki]
- All Monsters Attack (1969) [with Toshiro Aoki, Naomi Akimori]
- Space Amoeba (1970) [with Toshiro Aoki, Mutsumi Toshima, Hiroshi Komura]
- SciFi JAPAN TV (TV 2012-2014) [episode 10; with Toshiro Aoki, Jiro Shirasaki]
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