Packed with information this book, the first in a four volume series, examines the first two Pinan / Heian kata. With practical application drills based on the study of the reactions of students to common forms of aggression and violence in high pressure scenario simulations, and years of research into violent crime, it contains a detailed analysis of the attributes that makes techniques effective, an exploration of the origins and purpose of the Pinan forms, and a discussion of some of the myths surrounding kata, their purpose and application. Each drill is clearly illustrated with photos and explanatory text. This book approaches the kata by looking at the common factors that unite effective combative approaches rather than focusing on minor stylistic differences, and as a result provides applications and training drills suitable for everyone, regardless of style or grade. The application drills initiate from movements that simulate the body's natural flinch responses to attacks or common fall back positions, and teach karateka how to close and create distance while moving freely between ballistic and grappling techniques incorporating close range striking, trapping, throwing, unbalancing and locking movements that mirror the forms. The Pinan Flow System refers to the ability to train karateka to flow seamlessly between ballistic and grappling responses using techniques and tactics embedded in the kata, and illustrates why the Pinan / Heian set, practiced by so many karateka, are an important and misunderstood part of the legacy of Okinawan karate to modern martial artists. Far from being simply kata for beginners, they reflect the distillation of the knowledge and tactics of the father of modern karate, and are an essential training tool and technical manual for beginner and black belt alike.