Oka was born on 31October 2003 in Okayama to Yachiyo and Yasumasa Oka, and grew up in the Kojo region [ja] of Minami-ku, Okayama.[1] He has a brother named Kyoiki. He began gymnastics when he was four years old. In 2019, he moved away from his family at age 16 to train at the Tokushukai Gymnastics Club in Kamakura.[2][3]
Career
Junior
Oka competed at the 2018 Junior Asian Championships where the Japanese team won the silver medal behind China. Individually, he won the all-around bronze medal behind Shi Cong and Yin Dehang.[4] Then in the event finals, he won the gold medal on the horizontal bar and the silver medals on the floor exercise and parallel bars, and the bronze medal on the still rings.[5]
Oka won two gold medals, one silver medal and one bronze medal at the 2019 Junior World Championships held in Győr, Hungary. On the first day, he won the gold medal both in the team and individual all-around events.[6][7] Then in the first day of event finals, he won the silver medal on the pommel horse behind teammate Takeru Kitazono.[8][9] Then on the final day, he won the bronze medal in the parallel bars behind Kitazono and China's Yang Haonan.[10][11] He then placed eighth all-around at the 2019 All-Japan Junior Championships.[12] At the 2020 All-Japan Championships, he finished 44th in the all-around.[13]
Oka placed 60th in the all-around at the 2021 All-Japan Championships.[14] He tore his right ACL at the 2022 All-Japan Championships.[15]
Oka returned to competition at the 2023 All-Japan Championships and placed 10th in the all-around.[16] He then finished 11th in the all-around at the NHK Trophy.[17] Then at the 2023 All-Japan Event Championships, he won a bronze medal on the floor exercise.[18] Oka won the all-around title at the 2023 Asian Championships in an upset over Carlos Yulo.[19][20] The Japanese team won the silver medal behind China.[21] In the event finals, Oka won silver medals on the parallel bars and the horizontal bar.[22]
.png)
_245.jpg)
_164.jpg)
_257.jpg)
