Central Japan Open Jiu Jitsu Championship 2023 Male Yellow Pre Teen Light Feather 4 Mins ~31.8kg 3 1 / 1 Division Max Weight Time Competitors Brackets Final JPN Hasegawa Ren Bonsai Jiu-jitsu Japan JPN Nagakusa Eito Ishitsuna Mma Fight 30 Mat 2 25 Nov 4:00AM BRA Hirano Rafael Evox Bjj JPN Nagakusa Eito Ishitsuna Mma Fight 34 Mat 2 25 Nov 4:15AM Hasegawa Ren Bonsai Jiu-jitsu Japan Nagakusa Eito Ishitsuna Mma JPN JPN Fight 37 Mat 2 25 Nov 4:22AM Hasegawa Ren Bonsai Jiu-jitsu Japan JPN