He started practicing karate in middle school and, since 1985, established a Karate dojo in Nagano Province, becoming an Instructor. He has been helping troubled youths—those struggling with delinquency, truancy, social withdrawal, domestic violence, mild mental disorders, and mild developmental disorders—by taking them in to live at his home and supporting their healthy growth.
In 1999, he founded the Karate-Do Shidokai and trained numerous top-level athletes. In 2001, he established the NPO Japan Martial Arts Comprehensive Fighting Federation. Currently, the organization has around 100 domestic classes and branches in 30 countries, growing into Japan's largest comprehensive martial arts organization. He continues his own training diligently and has been inducted into the Hall of Fame as a master recognized by the monthly magazine Hiden.
In 2008, he set up the DHYANA INT'L SCHOOL, a self-support facility linked to high schools that focus on regional support. This effort was featured in a documentary series on Fuji TV called 'Please Be There.' Building on that academy, he also began training amateur counselors and engaging in awareness activities regarding mental health. From 2016, he opened an affordable gym for the prevention of lifestyle-related diseases. In April 2017, he started the Diyana International Afterschool Tsunashima Day Service, and in 2019, he expanded to group homes for people with disabilities called Arcadia. Since May 2022, he has been assisting Ukrainian refugees affected by the Russian military invasion, successfully housing 4 families, totaling 9 people. These efforts have been featured multiple times in documentaries by NHK and NHK World.