If the Tenshinsho Jigen Ryu Seibukan is not near to you, there are several other schools across the world to learn the art.
Tenshinsho Jigen–ryu Hyoho Kenshinkai Tokyo Branch:
Tenshinsho Jigen–ryu Satsunankai – Miami, Florida
Tenshinsho Jigen–ryu Seiryukan – Charlotte, North Carolina