The cage is open, the egos are bigger, and someone's getting humbled in Saitama.
SUPER RIZIN.4 takes place on July 27, 2025, at Saitama Super Arena (Stadium Version) in Saitama, Japan. The main event features Mikuru Asakura taking on Kleber Koike. The card also includes Naoki Inoue facing Ryuya Fukuda for the RIZIN Bantamweight title. Inoue, a 28-year-old submission expert, clashes with 31-year-old DEEP two-division champion Fukuda.
Practical Effects
Real knockouts, zero choreography—bodies actually hit the mat.
Production
Saitama Super Arena Stadium Version is spectacle maximalism.
Direction
Sakakibara knows exactly when to hold on a fallen fighter's eyes.
Director
Nobuyuki Sakakibara
Trivia, insights & behind the scenes
RIZIN's 'Super' events are Japan's answer to Vegas superfights—less gambling, more screaming.
YA-MAN's ring name literally comes from the Japanese 'yes man'—ironic for someone who punches people for a living.
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