[Machine Translation] 68.6% of the respondents answered that the situation has become worse ( * )" The word "self-defense" has become more conscious in recent years due to the worsening of physical security. What are the best ways to deal with dangerous situations such as knives? As an answer to this question, Mr. Kazunori Kato, an active professional bodyguard, carefully explains the art of the baton. This book will be of great use to those in charge of security at hospitals, educational institutions, and other facilities, as well as to martial arts enthusiasts, as a source of modern knowledge and techniques. *From the results of a survey conducted by the National Police Agency in 2022.