| TOMOKAZU HYDRAULIC MACHINERY CO., LIMITED | Private company limited by shares | Dissolved |
| Nippon Tomokazu Corporation Limited | Private company limited by shares | Dissolved |
| TOMOKAZU DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| TOMOKAZU PRODUCTION HOUSE LIMITED | Private company limited by shares | Dissolved |
| TOMOKAZU INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| TOMOKAZU INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TOMOKAZU INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TOMOKAZU JAPANESE RESTAURANT COMPANY LIMITED | Private company limited by shares | Live |
| TOMOKAZU JAPANESE HOT POT RESTAURANT LIMITED | Private company limited by shares | Dissolved |