Tamiya-ryū Iaijutsu (民弥流居合術) is a martial art founded by Kamiizumi Magojirō Yoshitane (上泉孫次郎義胤), who later took his mother's name and became known as Tamiya Gon'emon Muneshige (民弥権右衛門宗重).
The sageo is not attached to the hakama himo or let loose, as in many other schools, but is tied in a knot at the kurigata, thus preventing the sword from falling out of the heko obi and permitting greater freedom of movement.
This permission is usually granted through a document, most often called a menkyo kaiden or "license of transmission", which certifies that the holder knows all the technical curriculum that can be taught or that he is qualified to teach (sometimes there are "secret teachings" or okugi that are only transmitted from sōke to sōke).
Two of these are in Japan (Kami-itabashi in Tokyo and Amagasaki in Kansai), three in the United-States of America (San Antonio, Encinitas and Chicago) and one in France (Paris).
[5] Kuroda sensei personally examines the candidacy of prospective students; enquiries should be made to the geographically closest practice group, excluding those in Japan.