[2] She then returned to Japan and played for the Division 2 side Chifure AS Elfen Saitama before joining Mynavi Sendai for the inaugural WE League season.

[7][8][9] On 18 March 2018, Nagano signed a one-year contract with Incheon Hyundai Steel Red Angels.

In January 2019, Nagano left South Korea and returned to her native Japan to play for Division 2 club Chifure AS Elfen Saitama.

[13] She made her official competitive debut in a 1–0 loss against West Ham United in the FA WSL Cup quarterfinals on 25 January 2023.

[14] She quickly established herself as a key part of the team as she started in all of Liverpool's remaining matches in the 2022–23 season.

[18] She captained Japan to the final of the 2016 FIFA U-17 Women's World Cup in Jordan,[19][20] where they were defeated by North Korea on penalty kicks,[21] and won the Golden Ball award as the tournament's top scorer.

[24] In August 2018, Nagano was part of Japan's victorious team in the 2018 FIFA U-20 Women's World Cup in France, turning in a player of the match performance in the semi-final, and scoring a goal in the final in a 3–1 win over Spain.