What happened: The three-round contest is scheduled for Sept. 12 at Yokohama Buntai, with a 5:30 p.m. local start. U-NEXT will carry the event in Japan alongside a global pay-per-view feed.
Why it matters: The rules switch comes after Nadaka's first defense of the ONE atomweight Muay Thai title in April. A Muay Thai title defense at ONE SAMURAI 4 follows on Oct. 17.
By the numbers: Nadaka beat Banluelok by unanimous decision across three rounds at ONE Friday Fights 114 in June 2025. His April title defense extended his overall winning streak to 41 bouts.
What to watch: Watch how Nadaka's footwork and counters translate under ONE's kickboxing rules.