In February this year over 300 people attended the performing arts festival at a junior high school in Okayama. It was much the same as any other arts festival at any other junior high school in Japan; the students sang, danced, played music and performed skits for an audience made up of family and friends.

There was, however, one major difference — the program wasn't Japanese. It was Korean. Korean in song, Korean in dance and Korean in language.

The festival was at the Okayama Korean Primary and Middle School, a school for Korean residents of Japan run by the General Association of Korean Residents in Japan, or Chongryun, which has close ties to North Korea.