All Japan Jiu Jitsu Championship Pre Koshien - Koshien 2023 Male Yellow Junior Teen Middle 4 Mins ~56.7kg 5 1 / 1 Division Max Weight Time Competitors Brackets Final Semifinal JPN Nakajima Kaisei Axis JPN Takamatsu Itsuki Carpediem Mita Fight 49 Mat 1 15 Jul 12:33PM Sakai Kotaro T-rex Jiu-jitsu Academy JPN JPN Hosoi Yuga Paraestra Koiwa Aoi Saito Infight Japan JPN Hosoi Yuga Paraestra Koiwa JPN Fight 51 Mat 1 15 Jul 12:43PM Sakai Kotaro T-rex Jiu-jitsu Academy Aoi Saito Infight Japan JPN JPN Fight 52 Mat 1 15 Jul 12:48PM Fight 55 Mat 1 15 Jul 13:03PM