
The card will be headlined by a rematch between Yuki Egawa and Tatsuya Tsubakihara for the K-1 Featherweight title. The two previously fought at the K-1 World GP 2020 in Osaka, with Tsubakihara winning a majority decision. In the co-main event, the K-1 Super Lightweight champion Hideaki Yamazaki is scheduled to fight Fukashi Mizutani in a non-title bout. Former two-time Krush Welterweight title challenger Kaisei Kondo will face Maki Dwansonpong. K-1 and Krush Cruiserweight title challenger Hisaki Kato is scheduled to fight Mahmoud Sattari.
| Release Date | March 21, 2021 | |
|---|---|---|
| Status | Released | |
| Original Title | K-1 WORLD GP 2021 JAPAN ~K’FESTA.4 Day.1~ | |
| Runtime | 3h 0min | |
| Budget | — | |
| Revenue | — | |
| Language | Japanese | |
| Original Language | Japanese | |
| Production Countries | Japan | |
| Production Companies | GAORAABEMAK-1 Japan Group | |