Roberto Danubio, 7th dan JKF Wado-kai, started practicing karate in 1978, seven years after moving to Switzerland with his family. He has been a scholar of Teruo Kono, Shingo Ohgami and Hideo Takagi, the head of the JKF Wado-kai Technical Committee. He leads the Renshin Kan Karateschule, one of the most renowned karate schools in Switzerland and is the Chief Instructor and President of SWKR – Swiss Wadokai Karatedo Renmei, the Swiss association of Wadoryu linked to the Japan Wado-kai. He is one of the few instructors authorized by the Japanese Wado Federation in Europe and he is considered among the leading karate experts on the international scene, regularly conducting seminars in Austria, Germany, Italy, Ireland, Finland, Belgium, Luxembourg and Scotland. His Karate Summer Camp in the Swiss mountains attract practitioners from all over the world. He is the author of the book Wadoryu Karatedo, one of the most complete texts on the JKF Wado-kai curriculum, full of high-quality color pictures and descriptions both in English and German, and of three educational DVDs on the same topic. From the moment of his recognition as a branch of JKF Wado-kai, in 2012, he became a technical adviser for the WKSI – Wadokai Karatedo Shin-Gi-Tai Italia.