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).

KNOWN FOR

Soul Eater
2008
Psycho-Pass
2012
The Heroic Legend of Arslan
2015
Rascal Does Not Dream of Bunny Girl Senpai
2018
My Hero Academia
2021
Noragami
2015
Sakura Quest
2017
Samurai Champloo
2005
RahXephon
2002
Den-noh Coil
2007
Ergo Proxy
2006
Beck: Mongolian Chop Squad
2004

FILMOGRAPHY

All
Movies
TV
Directing
20
Writing
1
Art
32
Visual Effects
1
2026
Rascal Does Not Dream of a Dear Friend
Director · unreleased
2023
Rascal Does Not Dream of a Sister Venturing Out
Director
2023
Rascal Does Not Dream of a Knapsack Kid
Director
2022
Akiba Maid War
Series Director
2021
Heaven's Design Team
Series Director
2019
Rascal Does Not Dream of a Dreaming Girl
Director
2018
Rascal Does Not Dream of Bunny Girl Senpai
Series Director
2017
Sakura Quest
Series Director
2014
Chaika - The Coffin Princess
Series Director
2012
Crayon Shin-chan: Fierceness That Invites Storm! Me and the Space Princess
Director
2011
Crayon Shin-chan: Fierceness That Invites Storm! Operation Golden Spy
Director
2009
Animal Detectives Kiruminzoo
Series Director
2003
RahXephon Interlude: Her and Herself/Thatness and Thereness
Director
2003
Scrapped Princess
Series Director
2002
RahXephon
Director
2001
Shingu: Secret of the Stellar Wars
Director
2000
The Truth of Grimm Brothers' Fairy Tales
Director
2000
The Truth of Japanese Fairy Tales
Director
1999
True School Ghosts
Director
1999
School Ghosts
Director