RIZIN 38 live from the Saitama Super Arena in Saitama, Japan. The event includes the continuation of their Super Atomweight Grand Prix and Hiromasa Ougikubo’s first appearance since winning a bantamweight tournament last year. In what is the biggest return of the night, RIZIN Bantamweight Champion Kyoji Horiguchi fights in Japan for the first time since late 2020, facing Kintaro in the main event.