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Souichi Masui (増井 壮一, Masui Sōichi, born 1966) is a Japanese anime director and storyboard artist from Urawa City, Saitama Prefecture (currently Saitama City). He sometimes works under the pseudonym Kazuma Mizukusa (水草一馬). In total, there are 20 recognized credits in film and television. On Cinestia you can browse Soichi Masui's complete filmography — 10 films and 10 series — and find where to watch each title.
