Surfing finals were held for the first time at the Aichi-Nagoya Asian Games, with Igarashi Kanoa (五十嵐カノア) and Ikeda Miku (池田美来) winning gold in the men's and women's events, respectively. Ochiai Akira (落合晃) won the men's 800m in a meet-record 1:44.48, while Japanese athletes won medals in a succession of other events.
In the first surfing finals at these Games, Igarashi Kanoa (五十嵐カノア) and Ikeda Miku (池田美来) won gold in the men's and women's events, respectively, and both conditionally qualified for the 2028 Los Angeles Olympics. In the men's 800m, Ochiai Akira (落合晃) of Komazawa University won in a meet-record 1:44.48, while Japan won gold in the men's 1,600m relay.
In other events, Sakai Jo (坂井丞) won the bronze medal in the men's 3m springboard with 376.40 points, while Ikuma Senri (伊熊扇李) finished fifth. Kaneto Rin (金戸凜) finished fifth in the women's 10m platform diving. In the women's football semifinals, Japan decisively defeated South Korea 2-0 to reach the final.
In the men's bouldering semifinals, Anraku Sorato (安楽宙斗) ranked second with 99.3 points and Narasaki Tomoa (楢崎智亜) ranked fifth with 83.8 points, with the top 8 advancing to the final. In the women's singles badminton final, Yamaguchi Akane (山口茜) lost 0-2 to An Se-young (安洗塋) of South Korea and did not win the gold medal.
Japan defeated South Korea 37-32 in the men's handball bronze-medal match to win the bronze medal. Bahrain defeated Qatar in the final to win the title.