K-1 WORLD GP 2021 JAPAN ～K’FESTA.4 Day.1～
- Chaka: 2021
- Dziko: Japan
- Mtundu: Action
- Situdiyo: GAORA, ABEMA, M-1 SPORTS MEDIA
- Mawu osakira: kickboxing, combat sports
- Wotsogolera: 中村拓己
- Osewera: Tatsuya Tsubakihara, Yuki Egawa, Hideaki Yamazaki, Fukashi Mizutani, Yuta Murakoshi, Ryusei Ashizawa
