Okahashi was a pupil of Hashimoto Shoji.
"Died of prostate cancer on April 14. Born in Hyogo Prefecture on Feb. 26, 1934. Became a disciple of Hashimoto Shoji 9P. Qualified at 1-dan at the Kansai Ki-in in 1954 and reached 6-dan in 1974. Retired in 2016 and promoted to 7-dan."