In 1938, at the age of 64, Shusai announced his retirement as a professional go player, playing a retirement game with Minoru KITANI who had won the victory over the league match.
1938年、64歳の秀哉は現役引退を発表し、リーグ戦を勝ち抜いた木谷實を相手に引退碁を打つこととなった。