The Japan National Football Team defeated Tunisia 4-0. Ki Sung-yong watched the game and expressed his anger. Ki Sung-yong was impressed by Japan's technical ability and said it was 'frustrating' to watch. Japan's strength is at the top level in Asia. Ki Sung-yong has experience playing against Japan and feels the technical difference. Japan's players have not only high technical ability but also improved physical and mobility. Ki Sung-yong acknowledges Japan's strength. The Japan National Football Team is preparing for the FIFA World Cup 2026. Ki Sung-yong's comments prove Japan's strength.