I found that “九伝流療術” is a bestseller book on Amazon Japan. It is written by 網戸理九 (Riku Amito) who is a best-selling author and
founder of Kudenryu therapy. The book has achieved 8 crowns in Amazon rankings and has won first place in the orthopedic surgery department of blood clinical trials1. It is a book that introduces
Kudenryu therapy and its benefits. You can buy it on Amazon Japan.