Oka Nobumitsu

Oka Nobumitsu (岡　信光) is a retired Nihon Ki-in professional player, born 1940/01/14. He turned 6 dan in 1979 and later reached 7 dan. He lives in Yokohama City.

His Nihon Ki-in page is here.

Oka was the teacher of Hoshino Masaki.