(-57.5kg) champion Shuhei Kumura, who earned his place in the semifinals with a second-round stoppage of Jawsuayai Sor.Dechaphan. Gunji won the fight by knockout, stopping Kumura with a right straight at the very last second of the first round. Advancing to the finals, Gunji faced Toma Tanabe, who he had beaten by an extra round decision on April 3, 2022. He won the rematch by a first-round technical knockout. Gunji faced the 2022 K-1 featherweight Grand Prix semifinalist Wang Junguang at K-1 World GP 2022 in Osaka on December 3, 2022. He won the fight by a narrow majority decision. Two of the judges scored the bout 30–29 in his favor, while the third judge scored it as an even 29–29 draw. Gunji made his first K-1 Featherweight title against View Petchkoson at K-1 World GP 2023: K'Festa 6 on March 12, 2023. Titles and accomplishments Professional Krush 2017 Krush Bantamweight Champion K-1 2021 K-1 World GP Japan Featherweight Champion 2021 K-1 Outstanding Performance Award 2022 K-1 Featherweight World Grand Prix Winner 2022 K-1 Fighter of the Year Amateur K-1 2014 K-1 Challenge B-Class Tournament Winner 2014 K-1 Challenge A-Class Tournament Winner 2015 K-1 Koshien Tournament Semi-finalist 2016 K-1 Koshien -55 kg Tournament Winner Kickboxing record |- style="background:#;" | 2023-03-12 || ||align=left| View Petchkoson || K-1 World GP 2023: K'Festa 6 || Tokyo, Japan || || || |- ! style=background:white colspan=9 | |- style="background:#cfc" | 2022-12-03|| Win ||align=left| Wang Junguang || K-1 World GP 2022 in Osaka || Osaka, Japan || Decision (Majority)|| 3 || 3:00 |- style="background:#cfc" | 2022-08-11|| Win ||align=left| Toma || K-1 World GP 2022 in Fukuoka, Tournament Finals || Fukuoka, Japan || TKO (Three knockdowns) || 1 || 2:57 |- ! style=background:white colspan=9 | |- style="background:#cfc" | 2022-08-11|| Win ||align=left| Shuhei Kumura || K-1 World GP 2022 in Fukuoka, Tournament Semifinals || Fukuoka, Japan || KO (2 knockdown/Punch) || 1 || 3:00 |- style="background:#cfc" | 2022-08-11|| Win ||align=left| Facu Suarez || K-1 World GP 2022 in Fukuoka, Tournament Quarterfinals || Fukuoka, Japan || Decision (Unanimous) ||3 ||3:00 |- |- style="background:#cfc" | 2022-04-03 || Win ||align=left| Toma || K-1: K'Festa 5 || Tokyo, Japan || Ext.R Decision (Unanimous)|| 4 ||3:00 |- style="text-align:center; background:#cfc" | 2021-12-04 || Win || align=left| Tatsuya Tsubakihara || K-1 World GP 2021 in Osaka || Osaka, Japan || Ext.R Decision (Split)|| 4 ||3:00 |- ! style=background:white colspan=9 | |- style="background:#cfc; | 2021-09-20 ||