The K-1 WORLD GP 2021 Japan Bantamweight Tournament takes place on May 30, 2021, at Yokohama Budokan in Yokohama, Japan. This kickboxing event features an eight-man Bantamweight Tournament with fighters like Toma Kuroda, Kazuki Miburo, Hinata Matsumoto, and Aoi Noda. The tournament concludes with Toma Kuroda facing Kazuki Miburo in the final. Additional bouts include Tatsuya Tsubakihara vs. Shuhei Kumura and Kenta Hayashi vs. Vitor Tofanelli.