I'M FROM JAPAN

I'm From Japan summary:

Tokio Abiko has left his hometown in Yamagata prefecture to enter school in the great metropolis of Tokyo. On his first day, he encounters one of his classmates, a strange boy called Japan Hinomoto. Tokio soon realizes that Japan is the master of a very peculiar martial art – Todofu-ken: the Metro-erritorial Pre-fist-ure Style! With each of the 47 styles themed after a prefecture of Japan, enjoy a hilarious and unique tour of the country!