[6] Ueno played second on the Japanese team (skipped by Yamamoto, who threw lead rocks) at the 2022 World Junior Curling Championships.

In the playoffs, the team won both of their games, including beating Sweden (skipped by Moa Dryburgh) in the final, to win the gold medal.

[8] The following season, played second again for Japan at the 2023 World Junior Curling Championships, this time on a team skipped by Yuina Miura.

In the playoffs, they defeated Switzerland (skipped by Xenia Schwaller) in the semifinals, but lost in the gold medal game to Scotland (Fay Henderson).

[9] Ueno played for Japan again at the 2024 World Junior Curling Championships, this time as the alternate, on a team skipped by Momoha Tabata.