Active Officers
| Name ↑ | Role | Appointed | Nationality | Age | Country of Residence |
|---|
| Hiroto Ichiki | Director | 29 May 2015 | Japanese | 64 years | England |
| Katsusuke Ishida | Director | 1 Apr 2023 | Japanese | 54 years | United Kingdom |
| Katsusuke Ishida | Secretary | 29 Nov 2023 | - | - | - |
| Keisuke Koshijima | Director | 5 Jul 2010 | Japanese | 70 years | Japan |
| Masanori Iwasaki | Director | 19 Jan 2013 | Japanese | 67 years | Poland |
| Mitsuyoshi Tamura | Director | 1 Sept 2016 | Japanese | 67 years | Japan |
| Ryuichiro Kanaizumi | Director | 1 Oct 2021 | Japanese | 64 years | Japan |
Resigned Officers
| Name ↑ | Role | Appointed | Resigned | Nationality | Age |
|---|
| Akira Yajima | Director | 1 Jul 2008 | 27 Aug 2013 | Japanese | 64 years |
| Akira Yajima | Secretary | 18 Jul 2008 | 27 Aug 2013 | Japanese | - |
| Atsushi Hattori | Director | 18 Jul 2008 | 31 Jul 2009 | Japanese | 82 years |
| David Hedge | Secretary | 1 Jul 2008 | 18 Jul 2008 | - | - |
| Hiroaki Hoshino | Director | 18 Jul 2008 | 5 Jul 2010 | British | - |
| Hiroaki Iizawa | Director | 6 Jun 2014 | 29 May 2015 | Japanese | 57 years |
| Hironobu Takano | Director | 8 Jun 2012 | 6 Apr 2017 | Japanese | 77 years |
| Hiroshi Takei | Secretary | 5 Apr 2018 | 29 Nov 2023 | - | - |
| Hiroshi Takei | Director | 5 Apr 2018 | 31 Jan 2024 | Japanese | 61 years |
| Hiroshi Unno | Director | 1 Jan 2013 | 1 Sept 2016 | Japanese | 66 years |
| Hiroshi Unno | Director | 1 Apr 2021 | 30 Nov 2022 | Japanese | 66 years |
| Hiroyoshi Koizumi | Director | 30 May 2013 | 1 Apr 2020 | Japanese | 77 years |
| Kaoru Someya | Director | 31 Jul 2009 | 8 Jun 2012 | Japanese | 80 years |
| Ken Uchida | Director | 7 Jul 2010 | 31 Mar 2015 | Japanese | 70 years |
| Ken Uchida | Director | 6 Apr 2017 | 1 Apr 2024 | Japanese | 70 years |
| Masafumi Fukuyama | Director | 18 Jul 2008 | 5 Jul 2010 | Japanese | 79 years |
| Masanori Hamada | Director | 5 Jul 2010 | 19 Jan 2013 | Japanese | 66 years |
| Michiya Uchida | Director | 18 Jul 2008 | 1 Jan 2013 | Japanese | 66 years |
| Michiya Uchida | Director | 1 Apr 2015 | 29 May 2015 | Japanese | 66 years |
| Shigehiko Ueno | Director | 18 Jul 2008 | 5 Jul 2010 | Japanese | 81 years |
| Suguru Akiyama | Director | 18 Jul 2008 | 31 Jul 2009 | Japanese | 85 years |
| Teruaki Yamaguchi | Director | 18 Jul 2008 | 1 Apr 2020 | Japanese | 80 years |
| Yo Yatsuzuka | Director | 27 Aug 2013 | 27 Aug 2013 | Japanese | 52 years |
| Yo Yatsuzuka | Director | 29 May 2015 | 5 Apr 2018 | Japanese | 52 years |
| Yo Yatsuzuka | Secretary | 27 Aug 2013 | 5 Apr 2018 | - | - |
| Yoshikazu Oshimi | Director | 31 Jul 2009 | 30 May 2013 | British | 77 years |