In June 2001, Kurokawa was selected Japan U-20 national team for 2001 World Youth Championship. But he did not play in the match, as he was the team's reserve goalkeeper behind Yosuke Fujigaya. In August 2004, he was selected Japan U-23 national team for 2004 Summer Olympics. But he did not play in the match, as he was the team's reserve goalkeeper behind Hitoshi Sogahata was selected as over aged.