Director · Born 1966
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).
Rascal Does Not Dream of a Dear Friend
2026 · Director
Rascal Does Not Dream of a Knapsack Kid
2023 · Director
Rascal Does Not Dream of a Sister Venturing Out
Rascal Does Not Dream of a Dreaming Girl
2019 · Director
Crayon Shinchan the Movie: The Storm Called: Me and the Space Princess
2012 · Director
Crayon Shinchan the Movie: The Storm Called: Operation Golden Spy
2011 · Director
RahXephon Interlude: Her and Herself/Thatness and Thereness
2003 · Director
The Truth of Grimm Brothers' Fairy Tales
2000 · Director
The Truth of Japanese Fairy Tales
True School Ghosts
1999 · Director