Hi Richard,
I own a sword made by Kimura san from Kumamoto. I had it custom made and took 5 months to have it completed. He does forge really good swords for iai. Hes not a mukansa though. Just a run of the mill swordsmith. He and his father Kanetsugu forged it for me as a gassaku (joint effort). 2-5-0 length, choji hamon, itame hada, nioi-deki, similar to bizen style forging. If theres anything else you want to know about this smith, just ask.
Kind regards,
Jeremy Hagop