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).
Známy pre: Directing
Výročie narodenia: 1966-03-29
Miesto narodenia: Urawa, Saitama, Japan
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