Sho Kosugi & Warren Chaney

Authors Of The Yin-Yang Code

Sho Kosugi

Japanese Martial Artists, Author and Actor

Sho Kosugi, one of the best known of all Japanese Martial Artists and actors in the world, grew up as the youngest child and only son of a Tokyo fisherman. At the age of five and a half, he began his Martial Arts training in Shindo- Jinen-Ryu Karate, Kendo, Judo, Iaido, Kobudo, Aikido, and Ninjutsu, and at the age of 18, became the All Japan Karate Champion. At age 19, he left Japan to study and reside in Los Angeles where he earned a Bachelor's Degree in Economics at CSULA.

Sho Kosugi remains active in Martial Arts and today’s Hollywood Film industry
The father of actors, Kane and Shane Kosugi

At the same time, he consistently improved his Martial Arts' skills while learning a wide variety of styles, such as Chinese Xing Yi Quan, Korean Tae Kwon Do, and Japanese Shito-Ryu and Shoto-Kan Ryu Karate.
Throughout the early 1970s, Sho competed in hundreds of Martial Arts tournaments and demonstrations, acquiring more than 660 trophies and medals including consecutive wins of the official City of Los Angeles’ Karate Champion titles for 1972, 1973 and 1974.

Mr. Kosugi’s film break came 1981 when Karate legend, Mike Stone, contracted with Sho to participate as one of six Ninja Stuntmen in a Cannon Film, titled Dance of Death. Soon however, the film’s producers and director saw his superb Martial Arts and weapons skills and moved him to a starring role. As the filming progressed it was obvious that he possessed a dynamic screen presence as well and when the picture was released as Enter the Ninja, Mr. Kosugi was in a starring role and the rest became history.

Following his film debut, Sho gained an enormous popularity in the ‘80s and ‘90s, appearing in more than fifteen motion pictures while starring in more than eleven of them. He was cast in leading and guest starring roles in many episodic television shows including The Master with late Lee Van Cleef. Mr. Kosugi’s captivating screen presence assured him of a unique place in the history of Martial Arts' Cinema. In 2009, a co-starring role in Ninja Assassin, earned him considerable praise and critical acclaim.

Warren Chaney

American author, filmmaker, artist, behavioral scientist, and pioneer in early television

Warren Chaney is an American author, filmmaker, artist, behavioral scientist, and pioneer in early television. He holds a Doctorate degree (Behavioral Science & Management), an MBA (Finance), and a Bachelor of Science with a double major (Marketing & Speech and Theatre).

In a wide-ranging career, Dr. Chaney has written 26 books
Including 5 novels along with 16 screenplays, 9 theatrical dramas, and more than 250 professional and non-professional magazine and journal articles.

He has written entries for Colliers Encyclopedia and was an editor for two publications, one in health care and the other, a fictional detective journal. He has produced 9 feature films and directed 8 in addition to producing and directing numerous television productions including 150 episodes of the pioneering television series, Magic Mansion. His work has received considerable recognition and numerous awards.
Dr. Chaney has a heavy background in behavioral science and management consulting and has been featured in national publications and mass media to include Good Morning America, Real People, PM Magazine, CBS Weekend News and ABC Radio.
Chaney established the first public university Health Services Administration program for the state of Texas, served on multiple boards of directors and advisory boards of public companies, and is considered a leader in the field of neuroplastic development of cognitive functions.
Chaney was an officer in the United States Army and served in multiple military commands during the Vietnam Era. He was born in Kentucky, a native of Hopkinsville, and was educated in Tennessee and Texas. Dr. Chaney now resides in Houston, Texas, is married and has five children.


This is the most breathtaking story by master of Ninja, Sho Kosugi. I am now living in the island “Shikoku” Japan where the story is developed. It is surprising to know his deep understanding about the historical background and blending that into modern adventure. Highly recommended for those curious about oriental mystery.

Ryoichi Umebayashi