On January 29, 2005, Oguro debuted for the Japan national team against Kazakhstan. He was selected the Japan for 2005 Confederations Cup. He played all 3 matches as substitute forward and scored 2 goals. He also played 4 matches and scored 2 goals at 2006 World Cup qualification. In 2006, he was selected the Japan for 2006 World Cup and played in all 3 matches as substitute forward. He played 22 games and scored 5 goals for Japan until 2008.