Mutsuo Koseki
- Art Director
- Animation Department
Art Director
Animation Department
- 2006
- 1994
- 1992
- 1990
- 1990
- 1989
- 1988
- 1987
- 1987
- Hoero! Bunbun
- background artist
- 1987
- 1986
- 1985
- 1985
- 1984–1985
- 1980
- Alternative names
- Matsuo Koseki
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