Every time I come to Japan, I learn new things which is there in their culture for a reason. There are many shrines, temples etc, but they don’t believe in religion. They follow the “do / ” which means the path. That’s what I understood. So, almost all schools in Japan has either Judo or Kento and it’s mandatory to join. In India Karate is well known and that’s basically a Japan martial arts. The real name is Karatedo, just like Judo and Kento. So, you see it all ends with “do” or “tō” which means you are strengthening your path not just physically, but mentally as well and you follow your “do / tō” and not some “religion”.