Discovering Aiki My 20 Years with Yukiyoshi Sagawa Sensei

Tatsuo Kimura is a best-selling author, a mathematician of international reknown, and professor at Japan's prestigious Tsukuba University. He is also a leading student of the late Yukiyoshi Sagawa Sensei, one of the most famous disciples of Sokaku Takeda.

This book is written in Japanese. However, the content of chapters two and three -- the key parts of his essay describing how to learn aiki from Sagawa Sensei -- are translated into English by the author. English-japanese bilingual format.