The KCP Extreme Championship (also known as the K-Cat Project Openweight Championship) was introduced on May 20, 2022. The gold belt replaces the white belt as the new world championship for the organization. Director KOTA made an executive decision to have a new belt made following the news that Sara Ichinose lost the white belt to Rina Tanahashi from rival group Infinity X. The new belt follows the same format as the original defended in wrestling and boxing.
Championship History[]
| Champion | Date Won | Reign | Notes |
|---|---|---|---|
 |
May 20, 2022 | 357 days | Defeated Akari Niimura to become the inaugural champion. |
 |
May 12, 2023 | 180 days | Defeated Sara Ichinose in a steel cage match. |
 |
Nov 10, 2023 | 175 days | Defeated Reina Matsumura in "She is a Rival (Another Story): A Battle in the Dream". Won the belt for the second time. |
  |
May 3, 2024 | 1 day | Defeated Sara Ichinose in the final installment of "KO Angels". |
  |
May 3, 2024 | 213 days | Defeated Yu Kawasaki in a rematch in the final installment of "KO Angels". Won the belt for the third time. |