If you are outside of Japan and considering requesting the service of a patent attorney in Japan, ha2mei.com provides a bulletin board helpful for find a patent attorney to consult.
Issues posted on the bulletin board will be seen by Japanese patent attorneys registered on ha2mei.com.
A patent attorney who can accept the request will reply. (The communication between you and the patent attorney cannot be seen by anyone else.)
You can talk with him/her around fees, periods, and other conditions.
* Because of the prohibition on undertaking cases in conflict of interest with already undertaken cases, patent attorneys and firms may not be able to accept requests in some instances.