The event was marked the promotion's fifth visit to Tokyo and first since
ONE 165 in January 2024. A
ONE Flyweight Muay Thai World Championship bout for the vacant title between former champion
Rodtang Jitmuangnon and former
ONE Bantamweight Muay Thai World Champion Nong-O Hama was scheduled to serve as the event. The bout was cancelled because Rodtang withdrew due to poor physical condition soon after his weigh-in and hydration test. An inaugural ONE Atomweight Muay Thai World Championship bout between
Nadaka Yoshinari and Numsurin Chor.Ketwina served as the event. A
ONE Lightweight World Championship rematch between current champion (also current
ONE Welterweight World champion)
Christian Lee and Alibeg Rasulov served as the event.The pairing previously met at
ONE Fight Night 26 in December 2024, where the bout ended in a no contest due to an accidental eye poke rendered Rasulov unable to continue during the second round. A
ONE Bantamweight Muay Thai World Championship bout between current champion
Nabil Anane and former champion (also former
ONE Flyweight Muay Thai and current
Bantamweight Kickboxing World Champion)
Jonathan Haggerty was scheduled to serve as the event.However, Haggerty withdrew due to surffered as injury, and the bout was instead he had replaced by
Hiromi Wajima for the featherweight Kickboxing bout. == Results ==