| OKUSAMA LIMITED | Private company limited by shares | Live |
| SUPER OKUSAN LIMITED | Private company limited by shares | Live |
| OKUSAY LIMITED | Private company limited by shares | Live |
| OKUSHII TRADING COMPANY LIMITED | Private company limited by shares | Live |
| OKUTA.COM LIMITED | Private company limited by shares | Dissolved |
| Visage Beauty by Okuyama Limited | | Live |
| Visage Wellness by Okuyama Limited | | Live |
| Okuyou Property Agency Company Limited | Private company limited by shares | Dissolved |
| OKUZEN LIMITED | Private company limited by shares | Live |
| Okwill (Hong Kong) Technology Co., Limited | | Live |
| OKWIN LIMITED | | Live |
| OKWOLIFE LIMITED | | Live |
| OkXlosion Limited | | Live |
| GE WS OKYAMA BAR LIMITED | Private company limited by shares | Live |
| OKYEH CORPORATION LIMITED | Private company limited by shares | Dissolved |
| OKYLINK ELECTRONICS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| OKYSTAR TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| OKYSTAR TECHNOLOGY GROUP CO., LIMITED | Private company limited by shares | Live |
| Okyukei Limited | Private company limited by shares | Live |
| OKZU Technology Co., Limited | Private company limited by shares | Live |