Yahata Koichi

(b.1968) born in Hokkaido Kansai Ki-in pro, 1 dan in 1998, 2 dan in May, 3 dan in october 1991, 4 dan in september 1992, 5 dan in May 1994, 6 dan in June 1997.

His teacher is Yasuo Koyama?

He plays online at PandaNet as Yahata.