bout 30–29 in his favor. Krush featherweight champion Kumura was rewarded for this two-fight winning streak with the opportunity to challenge the reigning Krush Featherweight champion Takahito Niimi at Krush 137 on May 21, 2022. He won the fight by unanimous decision, with all three judges scoring the bout 30–29 in his favor. Kumura faced the 2019 K-1 Featherweight World Grand Prix finalist Jawsuayai Sor.Dechaphan at K-1 World GP 2022 in Fukuoka on August 11, 2022, in the quarterfinals of the 2022 K-1 featherweight World Grand Prix. He won the fight by a second-round technical knockout. Kumura had a great start to the fight, as he knocked Jawsuayai with a high kick near the end of the opening round. He knocked his opponent down twice more in the following round, first with a jab counter to a lead leg kick and then with a flurry of punches, with resulted in a stoppage victory for him under the tournament rules. Kumura faced the incumbent K-1 featherweight champion Taito Gunji in the next round of the one-day tournament. He lost the fight by a first-round knockout. Kumura faced the 2022 K-1 Featherweight World Grand Prix runner-up Toma Tanabe at K-1 World GP 2022 in Osaka on December 3, 2022. He lost the fight by unanimous decision, with scores of 30–25, 30–25 and 30–26, after being knocked down twice in the first two rounds. Kumura made his first Krush Featherweight (-57.5kg) title defense against Riku Morisaka at Krush 147 on March 25, 2023. Titles and accomplishments New Japan Kickboxing Federation 2017 NJKF Bantamweight Champion Krush 2022 Krush Featherweight (-57.5kg) Champion Fight record |- style="text-align:center; background:#;" | 2023-03-25 || ||align=left| Riku Morisaka || Krush 147 || Tokyo, Japan || || || |- ! style=background:white colspan=9 | |- style="background:#fbb" | 2022-12-03|| Loss ||align=left| Toma || K-1 World GP 2022 in Osaka || Osaka, Japan || Decision (Unanimous) || 3 || 3:00 |- style="background:#fbb" | 2022-08-11|| Loss ||align=left| Taito Gunji || K-1 World GP 2022 in Fukuoka, Tournament Semifinals || Fukuoka, Japan || TKO (2 knockdowns/Punches) || 1 || 3:00 |- style="background:#cfc" | 2022-08-11|| Win||align=left| Jawsuayai Sor.Dechaphan || K-1 World GP 2022 in Fukuoka, Tournament Quarterfinals || Fukuoka, Japan || TKO (2 knockdowns)|| 2 ||1:03 |- |- style="text-align:center; background:#cfc;" | 2022-05-21|| Win ||align=left| Takahito Niimi|| Krush 137 || Tokyo, Japan || Decision (Unanimous)|| 3 ||3:00 |- ! style=background:white colspan=9 | |- style="background:#cfc" | 2022-02-27|| Win ||align=left|