The most famous judo siblings in Japan right now are Hifumi and Uta Abe. The second most famous, Hayato Kondo and Mitsuki Kondo, just won the -60kg and -48kg gold medal, respectively, at the Asian Games.
Mitsuki got the gold first, defeating 2025 World silver medalist Abiba Abuzhakynova (KAZ) in the final using a very slick newaza move. She secured Abuzhakynova's left arm and then rolled her into what is called a "Shiba Lock", from which the Kazakh player could not escape.
About half an hour later, Hayato Kondo secured his gold, defeating Olympic Champion Yeldos Smetov (KAZ), with uchimata and tomoe-nage for two yukos.
