In this tournament, players who have reached the required level in Japan and belong to a company can form pairs regardless of their team. Y.Watanabe, his last partner A.Hiashino, she is also participating in women's doubles with a partner from a different team.
@@yumie6632 Thank you for your explanation. I also see many young players against senior players, like in the first match of Higashino & Sakuramoto. What a nice opportunity for young players to play against their idols.