[3] In 2016 Ashikawa competed at the All-Japan Event Championships where she placed third on balance beam behind Asuka Teramoto and Kiko Kuwajima.

[5] In 2018 Ashikawa represented Japan at the Asian Junior Championships alongside Haruka Ikeda, Hinata Matsubara, Shoko Miyata, and Ayumi Niiyama.

She made her senior international debut at the 2019 City of Jesolo Trophy where she placed 16th in the all-around and seventh on uneven bars and balance beam.

[11] In February Ashikawa competed at the Melbourne World Cup where she once again won gold on balance beam, this time ahead of first-year senior Ondine Achampong of Great Britain.

Ashikawa became the third Japanese woman to win a world title in artistic gymnastics following Tanaka-Ikeda and Mai Murakami.