About OPRI
Organization
| President | Hide Sakaguchi |
| Full-time staff | 36 |
| Access | 1-15-16 Toranomon, Minato-ku, Tokyo 105-8524, Japan |
| President | Hide Sakaguchi |
| Full-time staff | 36 |
| Access | 1-15-16 Toranomon, Minato-ku, Tokyo 105-8524, Japan |