Ryu is a Japanese word that means "style" or "school," often used in the context of martial arts. It refers to a specific system or tradition of training, techniques, and philosophies. Each ryu has its own unique methods and principles, which are passed down through generations of practitioners. In martial arts, ryu can encompass various disciplines, such as karate, judo, or kendo. Each ryu may focus on different techniques, forms, and strategies, reflecting the history and culture of its origin. Practitioners often seek to master the teachings of their chosen ryu to achieve personal growth and skill development.