She was set to represent Japan at the 2024 Summer Olympics, but withdrew from the Games after she admitted to smoking and drinking in violation of team rules.

[5] She was selected to represent Japan at the inaugural Junior World Championships alongside Hazuki Watanabe and Chiaki Hatakeda.

Individually, she placed fourth in the all-around and won silver medals on the vault and floor exercise behind Yeo Seo-jeong and Wu Ran, respectively.

[20] She contributed scores of 14.400 on vault, 13.233 on balance beam, and 13.700 on the floor exercise towards Japan's seventh place finish in the team final.

[23] In the balance beam final, she scored 13.533 and won the bronze medal behind teammate Hazuki Watanabe and Canadian Ellie Black.

[25] In April, Miyata graduated from high school and enrolled in Juntendo University and joined its gymnastics club.

[29] At the 2023 World Championships in Antwerp she helped Japan qualify for the team final, where they ended up in eighth place and secured an Olympic berth.

[34] She won the gold medal in the all-around and was selected for the Japanese Olympic team alongside Rina Kishi, Haruka Nakamura, Mana Okamura, and Kohane Ushioku.

[36] On 19 July 2024 the Japan Gymnastics Association announced that Miyata had admitted to smoking and drinking, and would be withdrawing from the Games.