Xing Yi Quan
At the age of 19, Kosugi left Japan to study and reside in Los Angeles where he earned a bachelor's degree in Economics at CSULA. 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 Shitō-ryū and Shotokan-ryū Karate.