There, Kensuke Nakaniwa, Makoto Nakata, Momoe Nagumo, Aya Tanoue, and Akane Seo became her coaches.

[1][6] Takagi then made her international debut at the 2023 Coupe du Printemps in Luxembourg, where she won the silver medal on the junior level behind teammate, Ami Nakai.

[10][1] With this result, combined with her placements on the Junior Grand Prix series, Takagi was selected to represent Japan at the 2024 Winter Youth Olympics and named as Japan's first alternate to compete at the 2024 World Junior Championships.

[1] Competing at the 2024 Youth Olympics, Takagi scored a personal best in the short program, finishing second in that segment of the competition behind Shimada, and narrowly ahead of South Korean Shin Ji-a.

[17][18] In late November, Takagi competed at the 2024–25 Japan Junior Championships, where she came in fourteenth place.