| year | Head | Staff | Assistant |
| 1958 | Tokichi Kato | ||
| 1959 | > | ||
| 1960 | > | Takashi Uemura | |
| 1961 | > | Ken Takahashi | |
| 1962 | > | Mieko Obara | |
| 1963 | > | Shinichi Takahashi | |
| 1964 | > | Keiko (Ohtaki) Kurihara | |
| 1965 | > | Nobuo Uchida | > |
| 1966 | > | > | > |
| 1967 | > | > | > |
| 1968 | Miho Daigo | > | > |
| 1969 | > | > | > |
| 1970 | > | > | > |
| 1971 | > | > | > |
| 1972 | > | > | > |
| 1973 | > | > | > |
| 1974 | > | > | Kiyoshi Ikemoto |
| 1975 | > | > | > |
| 1976 | Nobuo Uchida | Ushio Takeuchi | > |
| 1977 | > | > | > |
| 1978 | > | > | > |
| 1979 | > | > | > |
| 1980 | > | > | Shinji Nagae |
| 1981 | > | > | Noriaki Komatsu |
| 1982 | > | > | > |
| 1983 | > | Yoshimasa Kurashige | Kazuhoko Kawai |
| 1984 | > | > | > |
| 1985 | > | > | > |
| 1986 | > | > | > |
| 1987 | > | > | Hiroyuki Murano |
| 1988 | Yoshimasa Kurashige | > | > |
| 1989 | Nobuo Uchida | Atsushi Miyashita | > |
| 1990 | discontinued | > | Masanori Ito |
| 1991 | > | Shin-ichi Yumoto | |
| 1992 | > | > | |
| 1993 | > | > | |
| 1994 | > | Kazunoru Oguni | |
| 1995 | > | > | |
| 1996 | > | > | |
| 1997 | Mutsumi Nakai | > | |
| 1998 | Atsushi Miyashita | Takashi Nagao | |
| 1999 | > | > | |
| 2000 | > | > | |
| 2001 | > | Yuka Matsuyama | |
| 2002 | > | Takamasa Sakurai | |
| 2003 | > | Yuka Matsuyama | |
| 2004 | > | > | |
| 2005 | > | > | |
| 2006 | > | > | |
| 2007 | > | Yuka Matsuyama/ Saiki Mishima | |
| 2008 | > | Saiki Mishima | |
| 2009 | Atsuhsi Miyashita | > | |
| 2010 | > | > | |
| 2011 | > | > | |
| 2012 | > | > | |
| 2013 | > | > | |
| 2014 | > | Saiki Mishima/ Ryoya Matsumoto | |
| 2015 | > | Ryoya Matsumoto | |
| 2016 | > | Ryoya Matsumoto/ Haruka Yamazaki | |
| 2017 | > | Hiroharu Tanaka | Haruka Yamazaki |
| 2018 | Atsuhsi Miashita/ Hiroharu Tanaka | Atsuhsi Miyashita/ Hiroharu Tanaka | Haruka Yamazaki/ Airi Yaguchi |
| 2019 | Hiroharu Tanaka | Hiroharu Tanaka/ Atsuhsi Miyashita | Airi Yaguchi/ Maki Yamamoto |
