I draw sometimes

As a young boy in school, Masaki Sashima would be dragged out of his classroom and beaten by his fellow students.

Masaki, now 72, was different to the other kids. 

He was Ainu, an Indigenous people from the country's northern regions, most notably the large island of Hokkaido.

"During recess, the hallway door would open, and several guys would yell at me to come out," he said.

"I clung to my desk in the classroom and kept quiet.

"Everyone would surround me and beat me."

Japan has long portrayed itself as culturally and ethnically homogenous, something that some have even argued is a key to its success as a nation.

More than 98 per cent of Japanese people are descendants of the Yamato people. 

But the Ainu are distinct, with their own history, languages, and culture.