Apparently it is a pseudonym used individually and collectively by various people working around the director and producer Kan Mukai on his films and at his production companies.
Movie
2004
Producer
2001
Executive Producer
1999
1997
Screenplay
1992
1990
1985
Director
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
Writer
1970
1969
1968
1967
1966