In 2014, when Nagano was 15 years old, she was selected the Japan U-17 national team for 2014 U-17 World Cup. She played 5 matches and Japan won the champions. In 2016, she played at 2016 U-17 World Cup again. Japan won the 2nd place. She played all 6 matches and was selected Golden Ball award. In 2018, she was selected the Japan U-20 national team for 2018 U-20 World Cup. She played all 6 matches and scored a goal at the final. Japan won the champions.