Matsumura Seito Society


Please visit our tribute to O’Soke Dave Shelton.


Please click on the link and read the PRESS RELEASE concerning the heir to IMSS and Soke Dave’s RyuHa. Congratulations to Soke-Dai Reid Brasher.

Members, we need your help!

We need all members, both students and instructors, to help us update your member profiles. Please fill out this online FORM.




The IMSS was formed to preserve and grow in the original ways taught in Okinawa under Hohan Soken. In that spirit, Soke Dave envisioned a cooperative environment for martial artists of various backgrounds and differing styles where they would train together, sharing knowledge, and experience learning success, while also becoming life-long contributing members. Today we are committed to not only become better martial artists but also family. We are looking for like-spirited, committed martial artists who want to make the world a better place one dojo at a time.