kdkjudo.org/2026/07/27/%e4%bb%a4%e5%92%8c8%e5%b9%b4%e7%a7%8b%e5%ad%a3%e5%85%a8%e5%9b%bd%e6%9f%94%e9%81%93%e9%ab%98%e6%ae%b5%e8%80%85%e5%a4%a7%e4%bc%9a/
Information about a national judo tournament for high-dan practitioners (5th-8th dan and above) held at the Kodokan in Tokyo, including registration procedures, rules, and competition details.