Central Japan Open Jiu Jitsu Championship 2024 Male Grey Pre Teen Feather 4 Mins ~36.3kg 3 1 / 1 Division Max Weight Time Competitors Brackets Final JPN Mihara Shinobu Team Kizuna JPN Koushima Masato Impacto Bjj Japan Fight 41 Mat 2 15 Dec 2:59AM BRA Okazaki Kenzo Evox Bjj JPN Koushima Masato Impacto Bjj Japan Fight 44 Mat 2 15 Dec 3:09AM Mihara Shinobu Team Kizuna Koushima Masato Impacto Bjj Japan JPN JPN Fight 49 Mat 2 15 Dec 3:21AM Koushima Masato Impacto Bjj Japan JPN