Koki Osaki “Dangerous Boy”
Bantamweight · Japan · RISE
Aggressive high-volume pressure striker
Overwhelming punch-flurry barrages
Record & stats
| Division | Bantamweight |
|---|---|
| Categories | Kickboxing |
| Promotion | RISE |
| Nationality | Japan |
| Born | Nagoya, Aichi, Japan |
| Team | Oishi Gym |
| Pro debut | 2017 |
| Height | 165cm |
| Stance | Orthodox |
| Age | 26 |
| KO rate | 54% |
| Status | Active |
How the wins come
54% Finish rate- 21 KO/TKO · 54%
- 18 Decision · 46%
Titles & honors
- RISE World Bantamweight Champion
Biography
Koki Osaki, nicknamed "Dangerous Boy," is the RISE World Bantamweight Champion and an aggressive, high-volume pressure striker out of Oishi Gym in Nagoya. He has built a busy, finish-oriented record on relentless punch output and forward pressure.
His defining moment came at RISE ELDORADO 2026 in March 2026, when he challenged long-reigning champion and division technician Shiro at the historic Ryogoku Kokugikan. Osaki overwhelmed the polished veteran to win a unanimous decision and claim the RISE World Bantamweight title — sweet revenge after Shiro had beaten him in their first meeting years earlier.
The win signaled a changing of the guard in one of Japanese kickboxing's deepest weight classes.
As of June 2026 he is the reigning RISE World Bantamweight Champion.
Fight history
- WShiroW Decision
- WKeisuke MonguchiW TKO R2
FAQ
- Did Koki Osaki beat Shiro?
- Yes. He beat Shiro by unanimous decision at RISE ELDORADO in March 2026 to win the RISE World Bantamweight title.
- What title does Koki Osaki hold?
- He is the RISE World Bantamweight Champion.
- What is Koki Osaki's nickname?
- He is known as 'Dangerous Boy.'
- What is Koki Osaki's style?
- He is an aggressive, high-volume pressure striker known for overwhelming punch flurries.