O Yuinin

(王 唯任) Taiwanese player affiliated to Nihon Kiin, born 1977-04-06, pupil of Tsutsui Katsumi 5 dan. Promoted 1 dan, then 2 dan in 1997, 3 dan in 1999 and 4 dan in 2000.

Chinese reading of his name is Wang Weiren/Weijen.

Nihon Kiin profile