In 2014, Miyagawa was selected the Japan U-17 national team for 2014 U-17 World Cup. She played in all 6 matches and scored 2 goals, and Japan won the championship. In 2016, Miyagawa was selected the Japan U-20 national team for 2016 U-20 World Cup. She played in 4 matches and Japan won the 3rd place. In 2018, Miyagawa was selected the U-20 Japan for 2018 U-20 World Cup second time. She played in all 6 matches and Japan won the championship.