Kuroda suffered his first professional loss at Krush 115, as he lost an extra round decision to Koki.
The title was previously held by Junki Sasaki, who vacated the belt after moving up to super bantamweight.
[13] Advancing to the semifinals, Kuroda was scheduled to fight the tournament favorite Begin Yoshioka, at Krush 120.
During a pre-fight interview, Kuroda stated his desire to face the reigning Krush Bantamweight champion Kazuki Miburo in the finals.
[17] Kuroda was scheduled to fight a rematch with Kazuki Miburo at K-1 World GP 2021 Japan on December 4, 2021.
The pair fought five months prior, in the finals of the K-1 Japan Bantamweight Tournament, with Kuroda winning by knockout.
[19] Kuroda next faced the 2021 Dead or Alive Bantamweight Tournament winner Kazane Nagai at The Match 2022, the K-1 and RISE cross-promotional event, on June 19, 2022.
He was booked to face the Yodsila Chor.Hapayak in the quarterfinals of the one-day tournament, which was held at K-1 World GP 2022 in Osaka on December 3, 2022.
Kuroda was awarded the unanimous decision following the extra fourth round and faced the former Krush Bantamweight champion Kazuki Miburo in the semifinals of the one-day tournament.
Kuroda advanced to the tournament final, where he faced Issei Ishii for the inaugural K-1 Bantamweight (-53 kg) title.