Kana Fukuma has spent most of her career far from the spotlight.

Shogi, a popular Japanese strategic board game often compared to chess, rewards quiet focus rather than public confrontation, and the holder of six women’s titles built her reputation on exactly that.

But last week, seated before a wall of cameras at the Osaka Bar Association, Fukuma found herself at the center of a debate she never expected to lead — one that touched the most personal part of her life.