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In 1997, Naohisa Kawaguchi made his debut for Japan's national team, marking a significant moment in his football career. Throughout his tenure with the national team, he established himself as a reliable goalkeeper and played a pivotal role in several major tournaments, including the 1998 and 2002 FIFA World Cups. Kawaguchi's impressive performances on the international stage further solidified his status as one of Japan's most accomplished football players.