In addition to accounts about old-time karate masters in Okinawa, the work features thirty-four photos of Motobu performing Naihanchi Shodan, including written descriptions. Moreover, it includes twenty kumite with pictures and descriptions as well as five pictures of how to use the makiwara.
What makes it even more unique is that the existence of the book was unknown until the 1980s, when the wife of a deceased student sent the book to Motobu Chōki’s son, Chōsei. Until today this edition remains the only known original edition in existence, and it provided the basis for this original translation. This work has to be considered one of the most important sources to assess and interpret karate.