| Company | Timeline | Status | |
| Maeda Gakuen Yochien Limited Secretary • Administrator | 28 Apr 2009←16 Years→Current | Active | |
| Brighton Language College Limited Secretary • Unreported | 8 Nov 2005←20 Years→Current | Active | |
| Japan Media Services Limited Director • Director | 25 Mar 2002←23 Years→28 Apr 2025 | Active | |
| Eikoku Maeda Gakuen Limited Secretary • Unreported | 31 Mar 1992←33 Years→Current | Active | |
